Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/54—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one sulfur as the ring hetero atoms, e.g. sulthiame
  • A61K31/5415—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one sulfur as the ring hetero atoms, e.g. sulthiame ortho- or peri-condensed with carbocyclic ring systems, e.g. phenothiazine, chlorpromazine, piroxicam
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/0012—Galenical forms characterised by the site of application
  • A61K9/0053—Mouth and digestive tract, i.e. intraoral and peroral administration
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
  • A61K9/141—Intimate drug-carrier mixtures characterised by the carrier, e.g. ordered mixtures, adsorbates, solid solutions, eutectica, co-dried, co-solubilised, co-kneaded, co-milled, co-ground products, co-precipitates, co-evaporates, co-extrudates, co-melts; Drug nanoparticles with adsorbed surface modifiers
  • A61K9/145—Intimate drug-carrier mixtures characterised by the carrier, e.g. ordered mixtures, adsorbates, solid solutions, eutectica, co-dried, co-solubilised, co-kneaded, co-milled, co-ground products, co-precipitates, co-evaporates, co-extrudates, co-melts; Drug nanoparticles with adsorbed surface modifiers with organic compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
  • A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
  • A61K9/1605—Excipients; Inactive ingredients
  • A61K9/1617—Organic compounds, e.g. phospholipids, fats
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
  • A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
  • A61K9/1605—Excipients; Inactive ingredients
  • A61K9/1617—Organic compounds, e.g. phospholipids, fats
  • A61K9/1623—Sugars or sugar alcohols, e.g. lactose; Derivatives thereof; Homeopathic globules
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
  • A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
  • A61K9/1605—Excipients; Inactive ingredients
  • A61K9/1629—Organic macromolecular compounds
  • A61K9/1652—Polysaccharides, e.g. alginate, cellulose derivatives; Cyclodextrin
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
  • A61K9/4841—Filling excipients; Inactive ingredients
  • A61K9/4858—Organic compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P19/00—Drugs for skeletal disorders
  • A61P19/02—Drugs for skeletal disorders for joint disorders, e.g. arthritis, arthrosis
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P25/00—Drugs for disorders of the nervous system
  • A61P25/04—Centrally acting analgesics, e.g. opioids
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
  • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]

Definitions

• compositions comprising meloxicam, medicaments produced using meloxicam in particulate form and to methods of treatment of an animal, including man, using a therapeutically effective amount of meloxicam administered by way of such medicaments. Also described are methods for producing particles of meloxicam using dry milling processes and processes for producing medicaments by further processing material produced by dry milling.
• Nonsteroidal anti-inflammatory drugs are widely used to treat acute and chronic pain, inflammation, and fever.
• Some of the active agents in this class include aspirin, ibuprofen, naproxen, diclofenac, indomethacin, celecoxib, and meloxicam.
• Meloxicam was first approved for marketing in the U.S. in 2000 under the trade name Mobic® (Boehringer Ingelheim). It is available as oral tablets (7.5 mg and 15 mg potencies) and as an oral suspension (7.5 mg/5 mL). Mobic is indicated for the treatment of osteoarthritis, rheumatoid arthritis, and juvenile rheumatoid arthritis. The recommend starting and maintenance dose is 7.5 mg per day.
• NSAIDs have significant analgesic, anti-inflammatory, and antipyretic activity, they are also associated with serious dose-related side effects such as gastrointestinal perforation and bleeding, cardiovascular events including myocardial infarction, and renal failure.
• all FDA-approved NSAID products marketed in the United States, including meloxicam contain labeling statements instructing prescribing physicians to use the lowest effective dose for the shortest possible duration.
• NSAIDs are members of the enolic acid group of NSAIDs and is chemically designated as 4- hydroxy-2-methyl-N-(5-methyl-2-thiazolyl)-2H-l ,2-benzothiazine-3-carboxamide- 1 , 1 -dioxide. It is practically insoluble in water. Poor solubility is a significant problem encountered in the development of compositions for the pharmaceutical, cosmetic, agricultural and food industries, particularly those compositions containing a biologically active material that is poorly soluble in water at physiological pH.
• poorly soluble compounds have undesirable pharmacokinetic properties such as slow dissolution and slow or incomplete oral absorption from the gastrointestinal tract to the systemic circulation.
• poorly soluble active agents tend to be disfavored or even unsafe for intravenous administration due to the risk of particles of agent blocking blood flow through capillaries.
• unit dosage forms of meloxicam containing either 5mg or lOmg of meloxicam that provide effective pain relief and have desirable pharmacokinetic properties.
• the unit dosage forms can provide pain relief when a single unit dose is administered to a patient.
• the unit dosage forms are useful for treating pain such as osteoarthritis pain at a relatively low systemic exposure to meloxicam.
• a single dose upon oral administration to a population of healthy adults in the fasted state, provides a mean plasma AUC (0- ⁇ ) of 7500-20000 h*ng/ml; a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a mean plasma Cmax of 400-900 ng/ml; a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a median Tmax of 1-3 hours; a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a mean plasma AUC (0- ⁇ ) that is 80% to 125% of 13610 ng-h/ml; a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a mean plasma Cmax that is 80% to 125% of 642 ng/ml.
• Described herein is a solid unit dosage form of a pharmaceutical composition
• a pharmaceutical composition comprising 5 mg of meloxicam and one or more pharmaceutically acceptable excipients, wherein the particles of meloxicam have a median particle size, on a volume average basis, between 100 nm and 5000 nm.
• the D(0.9) of the particles of meloxicam is less than 3000nm; the surface weighted mean diameter (D[3,2]) of the particles of meloxicam is between lOOnm and 800nm; volume weighted mean diameter (D[4,3]) of the particles of meloxicam is between 400nm and 1300nm; the dissolution rate of the unit dosage from is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 80%> of the meloxicam dissolves in a time period selected from: 30 minutes or less; 20 minutes or less; 10 minutes or less; and 5 minutes or less.
• the dissolution rate of the unit dosage form is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1 % sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 90%> of the meloxicam dissolves in a time period selected from: 30 minutes or less; 20 minutes or less; 10 minutes or less; and 5 minutes or less.
• a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a mean blood plasma AUC (0- ⁇ ) of 7500-20000 h*ng/ml
• a single dose, upon oral administration to a population of healthy adults in the fasted state provides a mean blood plasma Cmax of 400-900 ng/ml
• a single dose, upon oral administration to a population of healthy adults in the fasted state provides a mean blood plasma Cmax of 400-900 ng/ml
• a single dose, upon oral administration to a population of healthy adults in the fasted state provides a mean blood plasma AUC (0- ⁇ ) of 7500-20000 h*ng/ml
• a single dose, upon oral administration to a population of healthy adults in the fasted state provides a mean blood plasma AUC (0- ⁇ ) that is 80% to 125% of 13610 ng-h/ml
• a single dose, upon oral administration to a population of healthy adults in the fasted state provides a mean blood plasma
• a solid unit dosage form of a pharmaceutical composition comprising 5 mg of meloxicam, wherein a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a mean blood plasma Cmax of 350-950 ng/ml.
• a solid unit dosage form of a pharmaceutical composition comprising 5 mg of meloxicam, wherein a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a mean blood plasma AUC (0- ⁇ ) of 7500-20000 h*ng/ml.
• the particles of meloxicam have a median particle size, on a volume average basis, between 100 nm and 5000 nm.
• the D(0.9) of the particles of meloxicam is less than 3000nm; the surface weighted mean diameter (D[3,2]) of the particles of meloxicam is between lOOnm and 800nm; and volume weighted mean diameter (D[4,3]) of the particles of meloxicam is between 400nm and 1300nm.
• the dissolution rate of the unit dosage form is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 80% of the meloxicam dissolves in a time period selected from: 30 minutes or less; 20 minutes or less; 10 minutes or less; and 5 minutes or less.
• USP Apparatus 1 baskets
• SLS sodium lauryl sulfate
• the dissolution rate of the unit dosage form is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at
• At least 90% of the meloxicam dissolves in a time period selected from: 30 minutes or less; 20 minutes or less; 10 minutes or less; and 5 minutes or less.
• the dissolution rate is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 90% of the meloxicam dissolves in 30 minutes; at least 90%> of the meloxicam dissolves in 20 minutes; at least 90%> of the meloxicam dissolves in 10 minutes; at least 95% of the meloxicam dissolves in 30 minutes; at least 95% of the meloxicam dissolves in 20 minutes; at least 95% of the meloxicam dissolves in 10 minutes; at least 70% of the meloxicam dissolves in 5 minutes.
• SLS sodium lauryl sulfate
• the mean Cmax of a single unit is within 80.00% to 125.00% of the mean Cmax of 7.5 mg Mobic tablets, when a single unit is administered to a population of healthy adults in the fasted state; a single unit, upon oral administration to a population of healthy adult patients in the fasted state, provides a mean blood plasma AUC (0- ⁇ ) hours that is 60%-80% of the mean blood plasma AUC (0- ⁇ ) hours of 7.5 mg Mobic tablets, when a single dose is administered to a population of healthy adults in the fasted state; the unit dosage form is a capsule or a tablet; the unit dosage form is a hard gelatin capsule.
• a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a mean blood plasma AUC (0- ⁇ ) of 7500-20000 h*ng/ml
• a single dose, upon oral administration to a population of healthy adults in the fasted state provides a mean blood plasma Cmax of 400-900 ng/ml
• a single dose, upon oral administration to a population of healthy adults in the fasted state provides a mean blood plasma Cmax of 400-900 ng/ml
• a single dose, upon oral administration to a population of healthy adults in the fasted state provides a mean blood plasma AUC (0- ⁇ ) of 7500-20000 h*ng/ml
• a single dose, upon oral administration to a population of healthy adults in the fasted state provides a mean blood plasma AUC (0- ⁇ ) that is 80% to 125% of 13610 ng-h/ml
• a single dose, upon oral administration to a population of healthy adults in the fasted state provides a mean blood plasma
• a single dose upon oral administration to a population of healthy adults in the fasted state, provides a mean plasma AUC (0- ⁇ ) of 16000-44000 h*ng/ml; a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a mean plasma Cmax of 850-1750 ng/ml; a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a median plasma Tmax of 1 to 3 hrs; a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a mean plasma AUC (0- ⁇ ) that is 80% to 125% of 29,173 ng- h/ml; a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a mean plasma Cmax that is 80% to 125% of 1253 ng/ml.
• the dissolution rate of the 10 mg unit dosage form is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 1000 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 80% of the meloxicam dissolves in a time period selected from: 30 minutes or less; 20 minutes or less; 10 minutes or less; and 5 minutes or less; the dissolution rate is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 1000 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 90%> of the meloxicam dissolves in a time period selected from: 30 minutes or less; 20 minutes or less; 10 minutes or less; and 5 minutes or less,
• the particles of meloxicam have a median particle size, on a volume average basis, between 100 nm and 5000 nm.
• the D(0.9) of the particles of meloxicam is less than 3000nm
• the surface weighted mean diameter (D[3,2]) of the particles of meloxicam is between lOOnm and 800nm
• the volume weighted mean diameter (D[4,3]) of the particles of meloxicam is between 400nm and 1300nm
• the dissolution rate of the unit dosage form is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1 % sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 80%> of the meloxicam dissolves in a time period selected from: 30 minutes or less; 20 minutes or less; 10 minutes or less; and 5 minutes or
• a solid unit dosage form of a pharmaceutical composition comprising 10 mg of meloxicam and one or more pharmaceutically acceptable excipients wherein a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a mean blood plasma AUC (0- ⁇ ) of 16000-44000 h*ng/ml.
• a unit dosage form of a pharmaceutical composition comprising 10 mg of meloxicam and one or more pharmaceutically acceptable excipients wherein a single dose, a single dose, upon oral administration to a population of healthy adults in the fasted state, provides a mean blood plasma Cmax of 850-1750 ng/ml.
• the particles of meloxicam have a median particle size, on a volume average basis, between 100 nm and 5000 nm.
• the D(0.9) of the particles of meloxicam is less than 3000nm;
• the surface weighted mean diameter (D[3,2]) of the particles of meloxicam is between lOOnm and 800nm;
• the volume weighted mean diameter (D[4,3]) of the particles of meloxicam is between 400nm and 1300nm;
• the dissolution rate of the unit dosage form is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 80% of the meloxicam dissolves in a time period selected from: 30 minutes or less; 20 minutes or less; 10 minutes or less; and 5 minutes or less; the dissolution rate is such that, when tested
• a single dose, upon oral administration to a population of healthy adults in the fed state, provides a mean blood plasma Cmax of 525-1500 ng/ml
• a single dose, upon oral administration to a population of healthy adults in the fed state provides a median blood plasma tmax of 3 to 7 hrs
• a single dose, upon oral administration to a population healthy adults in the fed state provides a mean blood plasma AUC (0- ⁇ ) of 15000-42000 h*ng/ml
• a single dose, upon oral administration to a population of healthy adults in the fed state provides a mean blood plasma Cmax that is 80% to 125% of 27,146 ng/ml.
• the particles of meloxicam have a median particle size, determined on a particle volume basis, that is greater than lOOnm and is equal or less than a size selected from the group consisting of 5000nm, 4500nm, 4000nm, 3000nm, 2000nm, 1900 nm, 1800nm, 1700nm, 1600nm, 1500nm, 1400nm, 1300nm, 1200 nm, l lOOnm, lOOOnm, 900nm, 800nm, 700nm, 600nm, 500nm, 400 nm, 300nm, and 200nmln
• the D90 of the particle size distribution, as measured on a particle volume basis is selected from the group consisting of less than or equal, 4000nm, 3000nm, 2000nm, 1900 nm, 1800nm, 1700nm, 1600nm, 1500nm, 1400nm,
• the dissolution rate is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 90% of the meloxicam dissolves in 30 minutes;
• the dissolution rate is such that , when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 90%> of the meloxicam dissolves in 20 minutes;
• the dissolution rate is such that , when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least
• Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1%) sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 95% of the meloxicam dissolves in 20 minutes;
• the dissolution rate is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 95% of the meloxicam dissolves in 10 minutes;
• the dissolution rate is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 70% of the meloxicam dissolves in 5 minutes;
• the dissolution rate is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 1000 mL of pH 6.1 phosphate buffer with 0.1%) sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 90%> of the meloxicam dissolves in 30 minutes;
• the dissolution rate is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 1000 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at least 90%> of the meloxicam dissolves in 20 minutes;
• the dissolution rate is such that, when tested using USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 1000 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C, at
• the particles of meloxicam have a median particle size, determined on a particle volume basis, that is greater than lOOnm and is equal or less than a size selected from the group consisting of 5000nm, 4500nm, 4000nm, 3000nm, 2000nm, 1900 nm, 1800nm, 1700nm, 1600nm, 1500nm, 1400nm, 1300nm, 1200 nm, l lOOnm, lOOOnm, 900nm, 800nm, 700nm, 600nm, 500nm, 400 nm, 300nm, and 200nm.
• the D90 of the particle size distribution is selected from the group consisting of less than or equal, 4000nm, 3000nm, 2000nm, 1900 nm, 1800nm, 1700nm, 1600nm, 1500nm, 1400nm, 1300nm, 1200 nm, l lOOnm, or lOOOnm and, in some cases, greter than 900nm.
• the surface weighted mean diameter (D[3,2]) of the particles of meloxicam is between lOOnm and 800nm; in some embodiments the volume weighted mean diameter (D[4,3]) of the particles of meloxicam is between 400nm and 1300nm.
• Pharmacokinetic testing in human subjects demonstrated that single doses of the 5 mg and 10 mg unit dosages of the present invention were more rapidly absorbed than a 15 mg dosage of Mobic when all test articles were taken in the fasted state.
• the median time to maximum plasma concentration (Tmax) for the 5 mg and 10 mg dosages was 2 hours, while the median time to Tmax for the 15 mg Mobic tablet was 4 hours.
• the testing also demonstrated that a single dose of the lOmg unit dosage form exhibited about 1/3 lower systemic exposure (AUC) compared to a single dose of a conventional 15mg Mobic® tablet.
• the 5mg dosage form will exhibit about 1/3 lower systemic exposure compared to conventional 7.5mg Mobic® tablets.
• the peak plasma concentration (Cmax) observed for a single dose of the lOmg dosage form was comparable to that of a single dose of the conventional 15mg Mobic® tablet.
• the unit dosage forms described herein can be used to treat pain, e.g., pain associated with arthritis, e.g, osteoarthritis or rheumatoid arthritis.
• the unit dosage is a solid dosage form.
• the unit dosage comprises 5 mg or 10 mg of meloxicam and one or more pharmaceutically acceptable excipients.
• the 5mg unit dosage form can be administered 1 to 5 times daily with a single unit each time for a total dose of 5mg for each administration.
• two units of the 5mg unit dosage form can be administered 1 to 5 times daily with a single unit each time for a total dose of 5mg for each administration.
• the lOmg unit dosage form can be administered 1 to 5 times daily with a single unit each time for a total dose of lOmg for each administration.
• the crystallinity profile of the meloxicam in the dosage form is selected from the group consisting of: at least 20% of the biologically active material is crystalline, at least 30% of the biologically active material is crystalline, at least 40% of the biologically active material is crystalline, at least 50% of the biologically active material is crystalline, at least 60% of the biologically active material is crystalline, at least 70% of the biologically active material is crystalline, at least 75% of the biologically active material is crystalline, at least 85% of the biologically active material is crystalline, at least 90% of the biologically active material is crystalline, at least 95% of the biologically active material is crystalline and at least 98% of the biologically active material is crystalline.
• the crystallinity profile of the biologically active material is substantially equal to the crystallinity profile of the biologically active material before the material was subjected to the method as described herein.
• the disclosure also includes methods for dry milling meloxicam in presence of a plurality of milling bodies, a millable grinding matrix, and a facilitating agent, e.g., a surfactant.
• a facilitating agent e.g., a surfactant
• the milling time period is a range selected from the group consisting of: between 10 minutes and 3 hours, between 10 minutes and 2.5 hours, between 10 minutes and w hours, between, between 20 minutes and 2 hours, between 20 minutes and 90 minutes, and between 30 minutes and 90 minutes.
• the milling bodies are formed of a material is selected from the group consisting of: ceramics, glasses, polymers, ferromagnetics and metals.
• the milling bodies are steel balls having a diameter selected from the group consisting of: between 1 and 20 mm, between 2 and 15 mm and between 3 and 10 mm.
• the milling bodies are zirconium oxide balls having a diameter selected from the group consisting of: between 1 and 20 mm, between 2 and 15 mm and between 3 and 10 mm.
• the dry milling apparatus is a mill selected from the group consisting of: attritor mills (horizontal or vertical), nutating mills, tower mills, pearl mills, planetary mills, vibratory mills, eccentric vibratory mills, gravity-dependent-type ball mills, rod mills, roller mills and crusher mills.
• the milling bodies within the milling apparatus are mechanically agitated by 1, 2 or 3 rotating shafts.
• the method is configured to produce the biologically active material in a continuous fashion.
• the total combined amount of biologically active material and grinding matrix in the mill at any given time is equal to or greater than a mass selected from the group consisting of: 200 grams, 500 grams, 1 kg, 2kg, 5kg, 10kg, 20kg, 30kg, 50kg, 75kg, 100kg, 150kg, and 200kg.
• the total combined amount of biologically active material and grinding matrix is less than 2000kg.
• taurocholate taurocholic acid, sodium taurodeoxycholate, taurodeoxycholic acid, soy lecithin, phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylinositol,
• condensate/Lignosulfonate blend calcium dodecylbenzene sulfonate, sodium dodecylbenzene sulfonate, diisopropyl naphthaenesulphonate, erythritol distearate, naphthalene sulfonate formaldehyde condensate, nonylphenol ethoxylate (poe-30), tristyrylphenol ethoxylate,
• polyoxyethylene (15) tallowalkylamines, sodium alkyl naphthalene sulfonate, sodium alkyl naphthalene sulfonate condensate, sodium alkylbenzene sulfonate, sodium isopropyl naphthalene sulfonate, sodium methyl naphthalene formaldehyde sulfonate, sodium n-butyl naphthalene sulfonate, tridecyl alcohol ethoxylate (poe-18), triethanolamine isodecanol phosphate ester, triethanolamine tristyrylphosphate ester, tristyrylphenol ethoxylate sulfate, bis(2- hydroxyethyl)tallowalkylamines or mixtures thereof.
• the concentration of millable grinding matrix (or the total amount of the two or more millable grinding matrices) is selected from the group consisting of: 5 - 99 % w/w, 10 - 95 % w/w, 15 - 85 % w/w, of 20 - 80% w/w, 25 - 75 % w/w, 30 - 60%) w/w, 40 -50%) w/w.
• the concentration of the facilitating agent is selected from 0.1 -10 % w/w, 0.1 -5 % w/w, 0.1 -2.5 % w/w, of 0.1 - 2% w/w, 0.1 -1 %, 0.5 -5% w/w, 0.5 - 3% w/w, 0.5 -2% w/w, 0.5 - 1.5%, 0.5 -1 % w/w, of 0.75 - 1.25 % w/w, 0.75 -1% and 1% w/w.
• the faciliting agent is selected from the group consisting of: sodium lauryl sulfate, sodium stearyl sulfate, sodium cetyl sulfate, sodium cetostearyl sulfate, sodium docusate, sodium deoxycholate, N-lauroylsarcosine sodium salt, glyceryl monostearate, glycerol distearate glyceryl palmitostearate, glyceryl behenate, glyceryl caprylate, glyceryl oleate, benzalkonium chloride, CTAB, CTAC, Cetrimide, cetylpyridinium chloride, cetylpyridinium bromide, benzethonium chloride, PEG 40 stearate, PEG 100 stearate, poloxamer 188, , poloxamer 338, poloxamer 407 polyoxyl 2 stearyl ether, polyoxyl 100 stearyl ether, polyoxyl 100 ste
• taurodeoxycholate taurodeoxycholic acid
• soy lecithin phosphatidylcholine
• phosphatidylethanolamine phosphatidylserine, phosphatidylinositol, PEG4000, PEG6000,
• tallowalkylamines sodium alkyl naphthalene sulfonate, sodium alkyl naphthalene sulfonate condensate, sodium alkylbenzene sulfonate, sodium isopropyl naphthalene sulfonate, Sodium Methyl Naphthalene Formaldehyde Sulfonate, sodium n-butyl naphthalene sulfonate, tridecyl alcohol ethoxylate (poe-18), Triethanolamine isodecanol phosphate ester, Triethanolamine tristyrylphosphate ester, Tristyrylphenol Ethoxylate Sulfate, Bis(2-hydroxyethyl)tallowalkylamines.
• meloxicam is milled with lactose monohydrate and alkyl sulfates; meloxicam is milled with lactose monohydrate and sodium lauryl sulphate; meloxicam is milled with lactose monohydrate and sodium octadecyl sulphate; Meloxicam is milled with lactose monohydrate, alkyl sulfates and another surfactant or polymers; meloxicam is milled with lactose monohydrate, sodium lauryl sulfate and polyether sulfates; meloxicam is milled with lactose monohydrate, sodium lauryl sulfate and polyethylene glycol 40 stearate; meloxicam is milled with lactose monohydrate, sodium lauryl sulfate and polyethylene glycol 100 stearate; meloxicam is milled with lactose monohydrate, sodium lauryl sulfate and a poloxa
• meloxicam is milled with lactose monohydrate and a surfactant; meloxicam is milled with lactose monohydrate and lecithin; meloxicam is milled with lactose monohydrate and sodium n-lauroyl sarcosine; meloxicam is milled with lactose monohydrate and polyoxyethylene alkyl ether surfactants; meloxicam is milled with lactose monohydrate and PEG 6000.
• meloxicam is milled with lactose monohydrate and silica; meloxicam is milled with lactose monohydrate and Aerosil R972 fumed silica; meloxicam is milled with with lactose monohydrate, tartaric acid and sodium lauryl sulfate; meloxicam is milled with with lactose monohydrate, sodium bicarbonate and sodium lauryl sulfate; meloxicam is milled with lactose monohydrate, potassium bicarbonate and sodium lauryl sulfate.
• meloxicam is milled with mannitol and alkyl sulfates; meloxicam is milled with mannitol and sodium lauryl sulfate; meloxicam is milled with mannitol and sodium octadecyl sulfate; Meloxicam is milled with mannitol, alkyl sulfates and another surfactant or polymers;
• meloxicam is milled with mannitol, sodium lauryl sulfate and polyether sulfates; meloxicam is milled with mannitol, sodium lauryl sulfate and polyethylene glycol 40 stearate; meloxicam is milled with mannitol, sodium lauryl sulfate and polyethylene glycol 100 stearate; meloxicam is milled with mannitol, sodium lauryl sulfate and a poloxamer; meloxicam is milled with mannitol, sodium lauryl sulfate and poloxamer 407; meloxicam is milled with mannitol, sodium lauryl sulfate and poloxamer 338; meloxicam is milled with mannitol, sodium lauryl sulfate and poloxamer 188; meloxicam is milled with mannitol, sodium lauryl sulf
• meloxicam is milled with mannitol, sodium lauryl sulfate and polyethylene glycol 6000; meloxicam is milled with mannitol, sodium lauryl sulfate and polyethylene glycol 3000; Meloxicam is milled with mannitol and polyether sulfates; meloxicam is milled with mannitol and polyethylene glycol 40 stearate; meloxicam is milled with mannitol and polyethylene glycol 100 stearate
• meloxicam is milled with mannitol and polyvinyl-pyrrolidine; meloxicam is milled with mannitol and polyvinyl-pyrrolidone with an approximate molecular weight of 30,000- 40,000; meloxicam is milled with mannitol and alkyl sulfonates; meloxicam is milled with mannitol and docusate sodium; meloxicam is milled
• meloxicam is milled with mannitol and polyoxyethylene alkyl ether surfactants; meloxicam is milled with mannitol and PEG 6000.
• meloxicam is milled with mannitol and silica; meloxicam is milled with mannitol and Aerosil R972 fumed silica; meloxicam is milled with with mannitol, tartaric acid and sodium lauryl sulfate; meloxicam is milled with with mannitol, sodium bicarbonate and sodium lauryl sulfate; and meloxicam is milled with mannitol, potassium bicarbonate and sodium lauryl sulfate.
• ranges of values may include one or more ranges of values (e.g. size, concentration etc).
• a range of values will be understood to include all values within the range, including the values defining the range, and values adjacent to the range that lead to the same or substantially the same outcome as the values immediately adjacent to that value which defines the boundary to the range.
• “Therapeutically effective amount” as used herein with respect to methods of treatment and in particular drug dosage shall mean that dosage that provides the specific pharmacological response for which the drug is administered in a significant number of subjects in need of such treatment. It is emphasized that "therapeutically effective amount,” administered to a particular subject in a particular instance will not always be effective in treating the diseases described herein, even though such dosage is deemed a “therapeutically effective amount” by those skilled in the art. It is to be further understood that drug dosages are, in particular instances, measured as oral dosages, or with reference to drug levels as measured in blood.
• inhibitor is defined to include its generally accepted meaning which includes prohibiting, preventing, restraining, and lowering, stopping, or reversing progression or severity, and such action on a resultant symptom.
• present disclosure includes both medical therapeutic and prophylactic administration, as appropriate.
• median particle size is defined as the median particle diameter as determined on an equivalent spherical particle volume basis. Where the term median is used, it is understood to describe the particle size that divides the population in half such that 50% of the population is greater than or less than this size.
• the median particle size is often written as D50, D(0.50) or D[0.5] or similar. As used herein D50, D(0.50) or D[0.5] or similar shall be taken to mean 'median particle size'.
• Dx of the particle size distribution refers to the xth percentile of the distribution; thus, D90 refers to the 90 th percentile, D95 refers to the 95 th percentile, and so forth. Taking D90 as an example this can often be written as, D(0.90) or D[0.9] or simialr. With respect to the median particle size and Dx an upper case D or lowercase d are interchangeable and have the same meaning. Another commonly used way of describing a particle size distribution measured by laser diffraction, or an equivalent method known in the art, is to describe what % of a distribution is under or over a nominated size.
• percentage less than also written as "% ⁇ ” is defined as the percentage, by volume, of a particle size distribution under a nominated size -for example the % ⁇ 1000 nm.
• percentage greater than also written as "%>” is defined as the percentage, by volume, of a particle size distribution over a nominated size -for example the % > 1000 nm.
• the particle size can be easily measured.
• the active material has poor water solubility and the matrix it is milled in has good water solubility the powder can simply be dispersed in an aqueous solvent. In this scenario the matrix dissolves leaving the active material dispersed in the solvent. This suspension can then be measured by techniques such as photon correlation spectroscopy or laser diffraction.
• Suitable methods to measure an accurate particle size where the matrix has low solubility in a water- based dispersant are outlined below.
• centrifugation could be used to separate the insoluble matrix from the active material particles.
• Other ancillary techniques would also be required to determine if any active material was removed by the separation technique so that this could be taken into account.
• image analysis could be used to obtain information about the particle size distribution of the active material.
• Suitable image measurement techniques might include transmission electron microscopy (TEM), scanning electron microscopy (SEM), optical microscopy and confocal microscopy.
• TEM transmission electron microscopy
• SEM scanning electron microscopy
• optical microscopy optical microscopy
• confocal microscopy In addition to these standard techniques some additional technique would be required to be used in parallel to differentiate the active material and matrix particles.
• possible techniques could be elemental analysis, Raman spectroscopy, FTIR spectroscopy or fluorescence spectroscopy.
• dry mill or variations, such as “dry milling”, should be understood to refer to milling in at least the substantial absence of liquids. If liquids are present, they are present in such amounts that the contents of the mill retain the characteristics of a dry powder.
• millable means that a material is capable of being reduced in particle under the dry milling conditions used.
• the milled grinding matrix is of a comparable particle size to the biologically active material.
• the particle size of the matrix is substantially reduced by milling but the resulting particle size is larger than the milled biologically active material.
• an appropriate grinding matrix affords particular advantageous applications of the method of the present disclosure.
• a highly advantageous aspect of the present disclosure is that certain grinding matrixes appropriate for use in the method of the disclosure are also appropriate for use in a medicament.
• the present disclosure encompasses methods for the production of a medicament incorporating both meloxicam and the grinding matrix or in some cases the abiraterone acetate and a portion of the grinding matrix, medicaments so produced, and methods of treatment using the medicament.
• the medicament may include only the milled abiraterone acetate together with the milled grinding matrix or, more preferably, the milled meloxicam and milled grinding matrix may be combined with one or more pharmaceutically acceptable carriers, as well as any desired excipients or other like agents commonly used in the preparation of medicaments.
• At least one component of the grinding matrix is harder than the meloxicam, and is thus capable of reducing the particle size of the meloxicam under the dry milling conditions of the disclosure.
• the millable grinding matrix affords the advantage of the present disclosure through a second route, with the smaller particles of grinding matrix produced under the dry milling conditions enabling greater interaction with the meloxicam.
• the quantity of the grinding matrix relative to the quantity of meloxicam, and the extent of size reduction of the grinding matrix is sufficient to inhibit re-agglomeration of the particles of the active material. In some embodiments, the quantity of the grinding matrix relative to the quantity of meloxicam, and the extent of size reduction of the grinding matrix, is sufficient to inhibit re- agglomeration of the particles of the active material.
• the grinding matrix has a low tendency to agglomerate during dry milling. While it is difficult to objectively quantify the tendency to agglomerate during milling, it is possible to obtain a subjective measure by observing the level of "caking" of the grinding matrix in the milling chamber of the mill as dry milling progresses.
• the grinding matrix may be an inorganic or organic substance.
• the milling bodies are preferably chemically inert and rigid.
• chemically-inert means that the milling bodies do not react chemically with the meloxicam or the grinding matrix.
• the milling bodies are essentially resistant to fracture and erosion in the milling process.
• the milling bodies are desirably provided in the form of bodies which may have any of a variety of smooth, regular shapes, flat or curved surfaces, and lacking sharp or raised edges.
• suitable milling bodies can be in the form of bodies having ellipsoidal, ovoid, spherical or right cylindrical shapes.
• the milling bodies are provided in the form of one or more of beads, balls, spheres, rods, right cylinders, drums or radius-end right cylinders (i.e., right cylinders having hemispherical bases with the same radius as the cylinder).
• the milling bodies desirably have an effective mean diameter between about 0.1 and 30 mm, more preferably between about 1 and about 15 mm, still more preferably between about 3 and 10 mm.
• the milling bodies may comprise various substances such as ceramic, glass, metal or polymeric compositions, in a particulate form.
• Suitable metal milling bodies are typically spherical and generally have good hardness (i.e. RHC 60-70), roundness, high wear resistance, and narrow size distribution and can include, for example, balls fabricated from type 52100 chrome steel, type 304, 316 or 440C stainless steel or type 1065 high carbon steel.
• Ceramics for example, can be selected from a wide array of ceramics desirably having sufficient hardness and resistance to fracture to enable them to avoid being chipped or crushed during milling and also having sufficiently high density. Suitable densities for milling bodies can range from about 1 to 15 g/cm 3 , preferably from about 1 to 8 g/cm 3 . Ceramics can be selected from steatite, aluminum oxide, zirconium oxide, zirconia-silica, yttria-stabilized zirconium oxide, magnesia- stabilized zirconium oxide, silicon nitride, silicon carbide, cobalt-stabilized tungsten carbide, and the like, as well as mixtures thereof.
• Glass milling bodies are spherical (e.g. beads), have a narrow size distribution, are durable, and include, for example, lead- free soda lime glass and borosilicate glass.
• Polymeric milling bodies are preferably substantially spherical and can be selected from a wide array of polymeric resins having sufficient hardness and friability to enable them to avoid being chipped or crushed during milling, abrasion-resistance to minimize attrition resulting in contamination of the product, and freedom from impurities such as metals, solvents, and residual monomers.
• Milling bodies can be formed from polymeric resins.
• Polymeric resins for example, can be selected from crosslinked polystyrenes, such as polystyrene crosslinked with divinylbenzene, styrene copolymers, polyacrylates such as polymethylmethacrylate, polycarbonates, polyacetals, vinyl chloride polymers and copolymers, polyurethanes, polyamides, high density polyethylenes, polypropylenes, and the like.
• crosslinked polystyrenes such as polystyrene crosslinked with divinylbenzene, styrene copolymers, polyacrylates such as polymethylmethacrylate, polycarbonates, polyacetals, vinyl chloride polymers and copolymers, polyurethanes, polyamides, high density polyethylenes, polypropylenes, and the like.
• polyacrylates such as polymethylmethacrylate
• polycarbonates such as polycarbonates, polyacetals, vinyl chloride polymers and cop
• Polymeric resins typically can have densities ranging from about 0.8 to 3.0 g/cm 3 . Higher density polymeric resins are generally preferred.
• the milling bodies can be composite bodies comprising dense core bodies having a polymeric resin adhered thereon. Core particles can be selected from substances known to be useful as milling bodies, for example, glass, alumina, zirconia silica, zirconium oxide, stainless steel, and the like. Core substances have densities greater than about 2.5 g/cm 3 .
• the milling bodies are formed from a ferromagnetic substance, thereby facilitating removal of contaminants arising from wear of the milling bodies by the use of magnetic separation techniques.
• metals have the highest specific gravities, which increase grinding efficiency due to increased impact energy.
• Metal costs range from low to high, but metal contamination of final product can be an issue. Glasses are
• the meloxicam and grinding matrix in the form of crystals, powders, or the like, are combined in suitable proportions with or without a plurality of milling bodies in a milling chamber that is mechanically agitated for a predetermined period of time at a predetermined intensity of agitation.
• a milling apparatus is used to impart motion to contents of the mill including any milling bodies by the external application of agitation, a stream of dry gas or other force, whereby various translational, rotational or inversion motions or
• any milling bodies utilized and the particles of meloxicam and the grinding matrix can result in application of shearing forces as well as multiple impacts or collisions having significant intensity between the mill components, any milling bodies utilized and the particles of meloxicam and the grinding matrix.
• the nature and intensity of the forces applied by the milling bodies to the meloxicam and the grinding matrix is influenced by a wide variety of processing parameters including: the type of milling apparatus; the intensity of the forces generated, the kinematic aspects of the process; the size, density, shape, and composition of any milling bodies used; the weight ratio of the meloxicam and grinding matrix mixture to the milling bodies; the duration of milling; the physical properties of both the meloxicam and the grinding matrix; the atmosphere present during milling; and others.
• the mill is capable of repeatedly or continuously applying mechanical compressive forces and shear stress to the meloxicam and the grinding matrix.
• dry milling being carried out by way of a ball mill.
• mills examples include attritor mills, nutating mills, tower mills, planetary mills, vibratory mills, gravity-dependent-type ball mills, rod mills, roller mills or crusher mills, and pulverizing mills. It will be appreciated that dry milling in accordance with the method of the disclosure may also be achieved by any suitable milling method or means.
• the particle size of the meloxicam prior to dry milling according to the methods described herein is less than about 1000 ⁇ , as determined by sieve analysis. If the particle size of the meloxicam is greater than about 1000 ⁇ , then it is preferred that the particles of the meloxicam substrate be reduced in size to less than 1000 ⁇ using another particle size reduction method prior to dry milling according to the methods described herein.
• Agglomerates comprising particles of meloxicam having a particle size within the ranges specified herein, should be understood to fall within the scope of the present disclosure, regardless of whether the agglomerates exceed the ranges specified above.
• the meloxicam and the grinding matrix are dry milled for the shortest time necessary to minimize any possible contamination from the mill process and/or any milling bodies utilized. This time varies greatly, depending on the meloxicam and the grinding matrix, and may range from as short as 1 minute to several hours.
• Suitable rates of agitation and total milling times are adjusted for the type and size of milling apparatus, the type and size of any milling media utilized, the weight ratio of the meloxicam and grinding matrix mixture to the plurality of milling bodies that may be utilized, the chemical and physical properties of the meloxicam and grinding matrix, and other parameters that may be optimized empirically.
• the grinding matrix (the materials milled together with meloxicam) is not separated from the meloxicam but is maintained with the meloxicam in the final product. In some embodiments the grinding matrix is considered to be Generally Regarded as Safe (GRAS) for pharmaceutical products.
• GRAS Generally Regarded as Safe
• the grinding matrix is separated from the meloxicam. In one aspect, where the grinding matrix is not fully milled, the unmilled grinding matrix is separated from the meloxicam. In a further aspect, at least a portion of the milled grinding matrix is separated from the meloxicam.
• any portion of the grinding matrix may be removed, including but not limited to 10%, 25%, 50%, 75%, or substantially all of the grinding matrix.
• a significant portion of the milled grinding matrix may comprise particles of a size similar to and/or smaller than the particles comprising the meloxicam.
• portion of the milled grinding matrix to be separated from the particles comprising the meloxicam comprises particles of a size similar to and/or smaller than the particles comprising the meloxicam, separation techniques based on size distribution are inapplicable.
• the method of the present disclosure may involve separation of at least a portion of the milled grinding matrix from the meloxicam by techniques including, but not limited to, electrostatic separation, magnetic separation, centrifugation (density separation), hydrodynamic separation, and froth flotation.
• the step of removing at least a portion of the milled grinding matrix from the meloxicam may be performed through means such as selective dissolution, washing, or sublimation.
• An advantageous aspect of the disclosure would be the use of grinding matrix that has two or more components where at least one component is water soluble and at least one component has low solubility in water. In this case washing can be used to remove the matrix component soluble in water leaving the meloxicam dispersed in the remaining matrix components.
• the matrix with low solubility is a functional excipient.
• a highly advantageous aspect of the present disclosure is that certain grinding matrixes appropriate for use in the method of the disclosure are also pharmaceutically acceptable and thus appropriate for use in a medicament.
• the present disclosure encompasses methods for the production of a medicament incorporating both the meloxicam and at least a portion of the milled grinding matrix, medicaments so produced and methods of treatment of an animal, including man, using a therapeutically effective amount of said meloxicam by way of said medicaments.
• the dosage forms of the present disclosure may include meloxicam, optionally together with the grinding matrix or at least a portion of the grinding matrix, with or without milling aids, facilitating agents, combined with one or more pharmaceutically acceptable carriers, as well as other agents commonly used in the preparation of pharmaceutically acceptable compositions.
• pharmaceutically acceptable carrier includes any and all solvents, dispersion media, coatings, antibacterial and antifungal agents, isotonic and absorption delaying agents, and the like that are physiologically compatible.
• the carrier is suitable for parenteral
• Pharmaceutically acceptable carriers include sterile aqueous solutions or dispersions and sterile powders for the extemporaneous preparation of sterile injectable solutions or dispersion.
• sterile aqueous solutions or dispersions and sterile powders for the extemporaneous preparation of sterile injectable solutions or dispersion.
• the use of such media and agents for the manufacture of medicaments is well known in the art. Except insofar as any conventional media or agent is incompatible with the
• compositions may include one or more of the following examples:
• surfactants and polymers including, but not limited to polyethylene glycol (PEG),
• polyvinylpyrrolidone PVP
• polyvinylalcohol polyvinylalcohol
• crospovidone polyvinylpyrrolidone- polyvinylacrylate copolymer
• cellulose derivatives hydroxypropylmethyl cellulose, hydroxypropyl cellulose, carboxymethylethyl cellulose, hydroxypropyllmethyl cellulose phthalate
• polyacrylates and polymethacrylates urea, sugars, polyols, and their polymers, emulsifiers, sugar gum, starch, organic acids and their salts, vinyl pyrrolidone and vinyl acetate
• binding agents such as various celluloses and cross-linked polyvinylpyrrolidone, microcrystalline cellulose; and or
• filling agents such as lactose monohydrate, lactose anhydrous, microcrystalline cellulose and various starches; and or
• lubricating agents such as agents that act on the flowability of the powder to be
• colloidal silicon dioxide including colloidal silicon dioxide, talc, stearic acid, magnesium stearate, calcium stearate, silica gel; and or
• sweeteners such as any natural or artificial sweetener including sucrose, xylitol, sodium saccharin, cyclamate, aspartame, and accsulfame K; and or
• flavouring agents and or
• preservatives such as potassium sorbate, methylparaben, propylparaben, benzoic acid and its salts, other esters of parahydroxybenzoic acid such as butylparaben, alcohols such as ethyl or benzyl alcohol, phenolic chemicals such as phenol, or quartemary compounds such as benzalkonium chloride; and or
• Diluents such as pharmaceutically acceptable inert fillers, such as microcrystalline cellulose, lactose, dibasic calcium phosphate, saccharides, and/or mixtures of any of the foregoing; and or
• wetting agents such as com starch, potato starch, maize starch, and modified starches, croscarmellose sodium, crosspovidone, sodium starch glycolate, and mixtures thereof; and or
• effervescent agents such as effervescent couples such as an organic acid (e.g., citric, tartaric, malic, fumaric, adipic, succinic, and alginic acids and anhydrides and acid salts), or a carbonate (e.g. sodium carbonate, potassium carbonate, magnesium carbonate, sodium glycine carbonate, L-lysine carbonate, and arginine carbonate) or bicarbonate (e.g. sodium bicarbonate or potassium bicarbonate); and or
• organic acid e.g., citric, tartaric, malic, fumaric, adipic, succinic, and alginic acids and anhydrides and acid salts
• a carbonate e.g. sodium carbonate, potassium carbonate, magnesium carbonate, sodium glycine carbonate, L-lysine carbonate, and arginine carbonate
• bicarbonate e.g. sodium bicarbonate or potassium bicarbonate
• the particle size distribution (PSD) of material in attrited blends can be determined using a Malvern Mastersizer 2000 fitted with a Malvern Hydro 2000 S pump unit. Measurement settings can be: Measurement Time: 12 seconds, Measurement cycles: 3. Final result generated by averaging the 3 measurements. Samples can prepared by adding 200mg of milled material to 5.0mL of 1% PVP in lOmM hydrochloric acid (HC1), vortexing for 1 min and then sonicating. From this suspension enough is added into the dispersant (lOmM HC1) to attain a desired obscuration level. If necessary an extra 1-2 minutes of sonication is applied using the internal sonication probe in the measurement cell.
• PVP particle size distribution
• the refractive index of the active ingredient to be measured was in the range of 1.49-1.73.
• the Attrited Blends were combined with intragranular excipients (microcrystalline cellulose, croscarmellose sodium, and sodium lauryl sulfate) and roller compacted into ribbons.
• the ribbons were milled into granules and blended with extragranular excipients (croscarmellose sodium, sodium lauryl sulfate, and sodium stearyl fumarate) to produce a Final Blend suitable for high speed automated encapsulation.
• the Final Blend was encapsulated to produce compositions containing 5mg or lOmg of meloxicam.
• the components of the Final Blend are as shown below in Table 2.
• the dissolution rate of meloxicam 5 mg and lOmg capsules was analyzed.
• the dissolution conditions were: USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 500 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C.
• the dissolution conditions were: USP Apparatus 1 (baskets) set to rotation speed of 100 RPM in 1000 mL of pH 6.1 phosphate buffer with 0.1% sodium lauryl sulfate (SLS) at 37°C ⁇ 0.5°C.
• SLS sodium lauryl sulfate
• N number of subjects randomized
• Example 4 Clinical Testing in Patients Suffering Osteoarthritis (OA)-Related Pain A Phase 3, multicenter, randomized, double-blind, double-dummy, placebo-controlled, fixed-dose, parallel-group trial that included 403 subjects with clinical and radiologic evidence of osteoarthritis (OA)-related pain that required NSAID or acetaminophen treatment.
• OA osteoarthritis
• the subject population was representative of patients with active OA requiring acetaminophen or NSAID treatment - the mean age overall was 60.7 years, and subjects were generally overweight (mean BMI, 30.94 kg/m 2 ).
• OA-associated pain and measures of function and stiffness utilized the WOMAC scale, a standard instrument that has been widely used to evaluate the utility of pharmacologic and non-pharmacologic interventions for the treatment of OA. Additional measures included pain intensity assessed by an 11 -point numerical pain scale prior to and 2 hours after dosing and patient and clinical global impressions of change at Week 12.
• WOMAC pain subscale scores at Baseline prior to randomization were high, indicative of a high degree of OA pain in the trial subjects, and were similar across treatment groups; the mean overall score (72.64 mm) was nearly twice the required minimum score for trial entry (40 mm).
• Efficacy of Meloxicam Capsules 5 mg and 10 mg prepared as described herein was demonstrated by a combination of clinically meaningful and statistically significant results in the primary, secondary, and post hoc analyses.
• Sensitivity analyses assessing the effect of rescue medication usage were also consistent with the primary efficacy analysis.
• the Silverman Integrated Rank Analysis which takes into account rescue medication use and WOMAC pain subscale scores simultaneously, demonstrated a statistically significant difference in the LS mean change from Baseline to Week 12 for both the Meloxicam Capsules 5 mg ( O.0001) and 10 mg ( O.0001) groups compared with placebo.
• the total WOMAC score provides a useful measure of improvement in overall symptoms associated with OA, including function, stiffness, and pain.
• Subjects in the Meloxicam Capsules 5 mg and 10 mg treatment groups achieved lower mean scores at each post-Baseline trial visit compared with the placebo group.
• Significant differences vs placebo in the LS mean change from Baseline in total WOMAC scores were achieved by the Meloxicam Capsules 5 mg group at each trial visit and over the 12-week period ( ⁇ 0.0014).
• Significant differences vs placebo were also noted for the
• Significant numbers of subjects in the Meloxicam Capsules 5 mg group were considered responders to trial drug treatment based on minimal differences in WOMAC pain subscale scores (10 mm) from Baseline at Weeks 2 and 6 and clinically meaningful (ie, >30% and >50%) reductions in WOMAC pain subscale scores from Baseline at Weeks 2, 6, and 12 following the start of dosing compared with placebo.
• a higher number of subjects in the Meloxicam Capsules 5 mg group also achieved >10 mm reduction in WOMAC pain subscale scores from Baseline at Week 12.
• Patient-reported outcomes provide an important measure of the clinical significance of observed treatment benefits from the subject's perspective. More subjects in both the Meloxicam Capsules 5 mg treatment group (50.0%) and 10 mg treatment group (52.8%) assessed their overall status as “very much improved” or “much improved” following treatment with trial drug. This is in contrast to only 40.0%) of subjects in the placebo group.
• Post hoc analyses examined rescue medication usage in relation to time of day (over four 6-hour intervals) and elapsed treatment duration (number of days on the trial). These analyses generally showed a gradual decrease in the amount of rescue medication usage as the number of days on trial medication increased, across all treatment groups. Additionally, post hoc analyses demonstrated rescue medication usage was lower among Meloxicam Capsules subjects compared with placebo for most time intervals throughout the treatment period. Rescue medication usage during the evening hours was lower for Meloxicam Capsules subjects compared with placebo, with most robust differences noted for those subjects in the 10 mg treatment group.

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