CA2298659C - Fast-acting analgesic - Google Patents
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- CA2298659C CA2298659C CA002298659A CA2298659A CA2298659C CA 2298659 C CA2298659 C CA 2298659C CA 002298659 A CA002298659 A CA 002298659A CA 2298659 A CA2298659 A CA 2298659A CA 2298659 C CA2298659 C CA 2298659C
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- ibuprofen
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- 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
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
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- 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
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2095—Tabletting processes; Dosage units made by direct compression of powders or specially processed granules, by eliminating solvents, by melt-extrusion, by injection molding, by 3D printing
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- 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
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/192—Carboxylic acids, e.g. valproic acid having aromatic groups, e.g. sulindac, 2-aryl-propionic acids, ethacrynic acid
-
- 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
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2004—Excipients; Inactive ingredients
- A61K9/2009—Inorganic compounds
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- 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
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2004—Excipients; Inactive ingredients
- A61K9/2022—Organic macromolecular compounds
- A61K9/2027—Organic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyvinyl pyrrolidone, poly(meth)acrylates
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- 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]
-
- 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]
- A61P29/02—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID] without antiinflammatory effect
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pain & Pain Management (AREA)
- General Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Medicinal Preparation (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
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- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
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Abstract
The invention relates to a fast acting analgesic, containing ibuprofen as the active analgesic substance in an auxiliary substance matrix, with a porous structure and a density of greater than 1 - 2.5 g/cm3.
Description
Fast-acting analgesic The present invention relates to a fast-acting analgesic preparation comprising as analgesic substance ibuprofen in an adjuvant matrix, where the preparation has a porous structure and a density of greater than 1 and up to 2.5 g/cm3.
The invention furthermore relates to a process for producing the preparation.
The use of ibuprofen, 2-(4-isobutylphenyl)propionic acid, as nonsteroidal analgesic has been known for a relatively long time.
Ibuprofen has an asymmetric carbon atom and, in the form used therapeutically, is generally in the form of the racemate.
The low solubility of the active substance is a problem with regard to the rapid onset of action which is required in the treatment of pain.
DE-C 36 39 038 discloses the achievement of a faster onset of action by using the pure S(+) isomer.
DE-C 41 40 185 proposes solving the problem of the low solubility of ibuprofen by using colloidal dispersion systems based on gelatin.
The problem of low solubility is furthermore frequently solved by converting ibuprofen into its water-soluble salts. However, sodium ibuprofenate, for example, is hygroscopic and can be tableted only poorly.
Ibuprofen is also available as lysine salt which, compared with the free acid, achieves a distinctly faster and higher maximum blood level Cmax and is currently regarded as the fastest dosage form. However, the conversion of the acid into the salt is more elaborate and more costly. In addition, lysine has, as amino acid, an allergenic potential, which is why the lysine salt has not been approved as medicinal product in some countries.
WO 96/29061 describes the production of transparent solid solutions of ibuprofen salts by a melt extrusion process.
It is an object of the present invention to find a fast-acting preparation of ibuprofen which achieves an effect which is as good as that of the lysine salt.
The invention furthermore relates to a process for producing the preparation.
The use of ibuprofen, 2-(4-isobutylphenyl)propionic acid, as nonsteroidal analgesic has been known for a relatively long time.
Ibuprofen has an asymmetric carbon atom and, in the form used therapeutically, is generally in the form of the racemate.
The low solubility of the active substance is a problem with regard to the rapid onset of action which is required in the treatment of pain.
DE-C 36 39 038 discloses the achievement of a faster onset of action by using the pure S(+) isomer.
DE-C 41 40 185 proposes solving the problem of the low solubility of ibuprofen by using colloidal dispersion systems based on gelatin.
The problem of low solubility is furthermore frequently solved by converting ibuprofen into its water-soluble salts. However, sodium ibuprofenate, for example, is hygroscopic and can be tableted only poorly.
Ibuprofen is also available as lysine salt which, compared with the free acid, achieves a distinctly faster and higher maximum blood level Cmax and is currently regarded as the fastest dosage form. However, the conversion of the acid into the salt is more elaborate and more costly. In addition, lysine has, as amino acid, an allergenic potential, which is why the lysine salt has not been approved as medicinal product in some countries.
WO 96/29061 describes the production of transparent solid solutions of ibuprofen salts by a melt extrusion process.
It is an object of the present invention to find a fast-acting preparation of ibuprofen which achieves an effect which is as good as that of the lysine salt.
It has been found that this object is achieved by the preparation defined at the outset, and a process for producing it.
More specifically, the invention as claimed is directed to a fast-acting analgesic comprising, as analgesic substance, ibuprofen in an adjuvant matrix, having a porous structure and a density of greater than 1 and up to 2.5 g/cm3, comprising as matrix adjuvants at least one water-soluble polymeric binder and a carbonate selected from among the alkali metal or alkaline earth metal carbonates or bicarbonates of sodium and potassium.
The invention as claimed is also directed to a process for producing the above fast-acting analgesic by mixing ibuprofen with the matrix adjuvants with application of shear forces and extrusion through a die with subsequent shaping, wherein the plasticized mixture is exposed to a vacuum before extrusion through the die.
Ibuprofen is processed according to the invention as free acid, preferably in the form of the racemate. However, it is also possible to use S(+)-ibuprofen. Depending on the dosage, the preparations may comprise from 5 to 80, preferably from 20 to 60, % by weight of ibuprofen. Suitable dosages are, for example, 200 mg or 400 mg per drug form. The active ingredient is preferably in the form of solid solution in an adjuvant matrix.
The term "solid solution" is known to the skilled worker (cf.
Chiou and Riegelmann, J. Pharm. Sci. 60(9), (1971) 1281 - 1301).
Besides water-soluble polymeric binders, the adjuvant matrix comprises carbonates and, where appropriate, conventional pharmaceutical adjuvants. Water-soluble means that at least 0.5 g, preferably at least 2 g of the polymer dissolve, where appropriate colloidally, in 100 g of water at 20 C.
Suitable polymeric binders according to the invention are water-soluble cellulose derivatives such as hydroxyalkylcelluloses, for example hydroxypropylcellulose, and, in particular, water-soluble homo- and copolymers of N-vinylpyrrolidone (NVP) with K values in the range from 10 to 90, preferably K25 to K30. Examples of suitable copolymers are copolymers of NVP and vinyl acetate, for example a copolymer of 2a 60% by weight NVP and 40% by weight vinyl acetate with a K value of 28 or 30. Polyvinylpyrrolidone (PVP) with a K value of 30 is particularly preferred as polymeric binder (for determination of the K value, see H. Fikentscher, Cellulosechemie 13 (1932) 58-64 and 71-74). It is also possible to employ mixtures of binders.
The polymeric binders can be employed in amounts of from 10 to 80, preferably 30 to 70, % of the total weight of the preparation.
Suitable carbonates according to the invention are the alkali metal carbonates sodium carbonate and potassium carbonate, and the alkaline earth metal carbonates calcium carbonate and magnesium carbonate. Also suitable furthermore are the corresponding bicarbonates of sodium and potassium.
The carbonates or bicarbonates can be employed in amounts of from 0.1 to 20, preferably 2 to 15, % of the total weight of the preparation. Anhydrous carbonates or bicarbonates are preferably employed. It is also particularly preferred to employ ground carbonates, in which case the particle sizes are preferably less than 500 m.
The preparations may additionally also contain conventional pharmaceutical adjuvants in the amounts customary for this purpose, for example stabilizers, antioxidants, dyes, flavorings, bulking agents or stabilizers such as highly disperse silica or lubricants. The drug forms may furthermore also comprise codeine, caffeine or vitamin C in the amounts customary for this purpose.
The preparations according to the invention are produced by mixing the components using shear forces and supplying thermal energy. The mixing preferably takes place in a single-screw or multiscrew extruder, particularly preferably a twin-screw extruder. The supply of thermal energy produces a melt of the mixing components. This normally takes place by heating the extruder jacket to from 50 to 180, preferably 80 to 130 C. The active ingredient can be mixed with the other components before or after the melting of the polymeric binder. The melts are solvent-free. This means that no water or organic solvents are added.
The molten mixture of the components is conveyed by the screw movement toward the extruder outlet, which preferably consists of a die. The pressure is reduced to from 10 to 600 mbar, preferably to 200 mbar, particularly preferably 50 to 150 mbar, according to the invention in the last segment or section before the die.
After extrusion through the die, the still plastic composition is shaped to suitable drug forms.
Suitable drug forms are preferably tablets, for example bolus tablets, lenticular tablets or else buccal tablets, pastilles, instant granules, granules or pellets for sachets or for filling capsules. Suppositories are also suitable according to the invention.
Tablets are preferably produced by the process described in EP-A
240 906 by passing the still plastic extrudate between two rolls which are driven in opposite directions and have mutually facing depressions in the surface of the rolls. It is also possible to obtain tablets with scores by appropriate choice of the shape of these depressions. Granules or pellets can be obtained by cold cutting or, preferably, by hot cutting.
The drug forms may additionally be provided with coatings known per se which have no effect on the release behavior.
More specifically, the invention as claimed is directed to a fast-acting analgesic comprising, as analgesic substance, ibuprofen in an adjuvant matrix, having a porous structure and a density of greater than 1 and up to 2.5 g/cm3, comprising as matrix adjuvants at least one water-soluble polymeric binder and a carbonate selected from among the alkali metal or alkaline earth metal carbonates or bicarbonates of sodium and potassium.
The invention as claimed is also directed to a process for producing the above fast-acting analgesic by mixing ibuprofen with the matrix adjuvants with application of shear forces and extrusion through a die with subsequent shaping, wherein the plasticized mixture is exposed to a vacuum before extrusion through the die.
Ibuprofen is processed according to the invention as free acid, preferably in the form of the racemate. However, it is also possible to use S(+)-ibuprofen. Depending on the dosage, the preparations may comprise from 5 to 80, preferably from 20 to 60, % by weight of ibuprofen. Suitable dosages are, for example, 200 mg or 400 mg per drug form. The active ingredient is preferably in the form of solid solution in an adjuvant matrix.
The term "solid solution" is known to the skilled worker (cf.
Chiou and Riegelmann, J. Pharm. Sci. 60(9), (1971) 1281 - 1301).
Besides water-soluble polymeric binders, the adjuvant matrix comprises carbonates and, where appropriate, conventional pharmaceutical adjuvants. Water-soluble means that at least 0.5 g, preferably at least 2 g of the polymer dissolve, where appropriate colloidally, in 100 g of water at 20 C.
Suitable polymeric binders according to the invention are water-soluble cellulose derivatives such as hydroxyalkylcelluloses, for example hydroxypropylcellulose, and, in particular, water-soluble homo- and copolymers of N-vinylpyrrolidone (NVP) with K values in the range from 10 to 90, preferably K25 to K30. Examples of suitable copolymers are copolymers of NVP and vinyl acetate, for example a copolymer of 2a 60% by weight NVP and 40% by weight vinyl acetate with a K value of 28 or 30. Polyvinylpyrrolidone (PVP) with a K value of 30 is particularly preferred as polymeric binder (for determination of the K value, see H. Fikentscher, Cellulosechemie 13 (1932) 58-64 and 71-74). It is also possible to employ mixtures of binders.
The polymeric binders can be employed in amounts of from 10 to 80, preferably 30 to 70, % of the total weight of the preparation.
Suitable carbonates according to the invention are the alkali metal carbonates sodium carbonate and potassium carbonate, and the alkaline earth metal carbonates calcium carbonate and magnesium carbonate. Also suitable furthermore are the corresponding bicarbonates of sodium and potassium.
The carbonates or bicarbonates can be employed in amounts of from 0.1 to 20, preferably 2 to 15, % of the total weight of the preparation. Anhydrous carbonates or bicarbonates are preferably employed. It is also particularly preferred to employ ground carbonates, in which case the particle sizes are preferably less than 500 m.
The preparations may additionally also contain conventional pharmaceutical adjuvants in the amounts customary for this purpose, for example stabilizers, antioxidants, dyes, flavorings, bulking agents or stabilizers such as highly disperse silica or lubricants. The drug forms may furthermore also comprise codeine, caffeine or vitamin C in the amounts customary for this purpose.
The preparations according to the invention are produced by mixing the components using shear forces and supplying thermal energy. The mixing preferably takes place in a single-screw or multiscrew extruder, particularly preferably a twin-screw extruder. The supply of thermal energy produces a melt of the mixing components. This normally takes place by heating the extruder jacket to from 50 to 180, preferably 80 to 130 C. The active ingredient can be mixed with the other components before or after the melting of the polymeric binder. The melts are solvent-free. This means that no water or organic solvents are added.
The molten mixture of the components is conveyed by the screw movement toward the extruder outlet, which preferably consists of a die. The pressure is reduced to from 10 to 600 mbar, preferably to 200 mbar, particularly preferably 50 to 150 mbar, according to the invention in the last segment or section before the die.
After extrusion through the die, the still plastic composition is shaped to suitable drug forms.
Suitable drug forms are preferably tablets, for example bolus tablets, lenticular tablets or else buccal tablets, pastilles, instant granules, granules or pellets for sachets or for filling capsules. Suppositories are also suitable according to the invention.
Tablets are preferably produced by the process described in EP-A
240 906 by passing the still plastic extrudate between two rolls which are driven in opposite directions and have mutually facing depressions in the surface of the rolls. It is also possible to obtain tablets with scores by appropriate choice of the shape of these depressions. Granules or pellets can be obtained by cold cutting or, preferably, by hot cutting.
The drug forms may additionally be provided with coatings known per se which have no effect on the release behavior.
The drug forms according to the invention are suitable for the preferred oral administration. They have a density, determined using a helium pycnometer, of more than 1 and up to 2.5, preferably from 1.1 to 2.0, particularly preferably from 1.4 to 1.9, g/cm3 and are porous. The density is determined using a helium pycnometer in accordance with OECD Guideline, Paris 1981, Test Guideline, page 100, or according to DIN 55990 or DIN 53243.
This entails determination of the volume of liquid helium displaced. In contrast to conventional methods, this procedure provides the true density of-a solid and not the apparent density. The helium is able, because of its small atomic diameter, to penetrate into the smallest fissures and pores.
The average pore size is preferably 80 m, and the pores may have diameters of from 10 to 300 Rm. A honeycomb-like structure is evident in the cross section through a drug form.
The active ingredient is particularly preferably present as solid solution in the matrix, which can be demonstrated by DSC
measurements (Differential Scanning Calorimetry) and by X-ray diffraction investigations. The drug forms may, however, also be present as mixed forms in which part of the active ingredient is in the form of a solid solution and another part is recrystallized. The active ingredient can also be in completely recrystallized form. The proportion of recrystallized free acid can be controlled by the amount of carbonate added.
In contrast to known solid solutions of ibuprofen, the drug forms according to the invention are, however, not transparent but have an opaque appearance.
The release rate for the active ingredient by the USP23 rotating basket method is at least 95% after 10 min.
The preparations according to the invention show not only rapid release but also a rapid action. The time (tmax) until the maximum blood plasma level (Cmax) is reached is in the region of 0.5 hour.
The AUCs (areas under the concentration-time curves), which are a measure of the amount of substance in the body, for the drug forms according to the invention are substantially comparable with those for a commercial fast-acting ibuprofen lysinate.
In view of the prior art, it was completely surprising that the drug forms according to the invention are bioequivalent to the lysinates.
It was also surprising that porous forms with a density of greater than 1 g/cm3 were obtained by reducing the pressure before the extruder outlet.
This entails determination of the volume of liquid helium displaced. In contrast to conventional methods, this procedure provides the true density of-a solid and not the apparent density. The helium is able, because of its small atomic diameter, to penetrate into the smallest fissures and pores.
The average pore size is preferably 80 m, and the pores may have diameters of from 10 to 300 Rm. A honeycomb-like structure is evident in the cross section through a drug form.
The active ingredient is particularly preferably present as solid solution in the matrix, which can be demonstrated by DSC
measurements (Differential Scanning Calorimetry) and by X-ray diffraction investigations. The drug forms may, however, also be present as mixed forms in which part of the active ingredient is in the form of a solid solution and another part is recrystallized. The active ingredient can also be in completely recrystallized form. The proportion of recrystallized free acid can be controlled by the amount of carbonate added.
In contrast to known solid solutions of ibuprofen, the drug forms according to the invention are, however, not transparent but have an opaque appearance.
The release rate for the active ingredient by the USP23 rotating basket method is at least 95% after 10 min.
The preparations according to the invention show not only rapid release but also a rapid action. The time (tmax) until the maximum blood plasma level (Cmax) is reached is in the region of 0.5 hour.
The AUCs (areas under the concentration-time curves), which are a measure of the amount of substance in the body, for the drug forms according to the invention are substantially comparable with those for a commercial fast-acting ibuprofen lysinate.
In view of the prior art, it was completely surprising that the drug forms according to the invention are bioequivalent to the lysinates.
It was also surprising that porous forms with a density of greater than 1 g/cm3 were obtained by reducing the pressure before the extruder outlet.
5 Examples The compositions indicated in each of the following examples were premixed and introduced into the feed section of a twin-screw extruder (ZSK-40, Werner & Pfleiderer). Extrusion took place with a product throughput of 25 kg per hour at a screw speed of 90 rpm. The temperatures in the individual zones (sections) of the extruder and the heated die strip were:
section 1: 80 C, section 2: 120 C, section 3: 130 C, section 4:
130 C, head: 130 C, die 130 C. The pressure in section 4 was 51.5 mbar. Bolus tablets were produced from the extrudate by the calendering process described in EP-A 240 906.
The release of active ingredient was measured by the USPXXIII
basket method. Determination takes place at 37 C in a no-change test at a pH of 7.2 and at 150 rpm. The test medium employed was a 0.05 molar aqueous potassium dihydrogen phosphate solution which had been adjusted to pH 7.2 with sodium hydroxide solution.
An appropriate amount of drug form was weighed out. The assay was carried out photometrically by.means of a derivative spectrum at 256 to 270 nm with external standard calibration.
The tablets were provided with a commercially obtainable coating (Opadry OY-S-24939 supplied by Colorcon), a 15% strength by weight aqueous dispersion of the following composition: 58.04%
hydroxypropylmethylcellulose (HPMC) with a viscosity of 6 mPas, 5.76% HPMC with a viscosity of 15 mPas, 5.76%
hydroxypropylcellulose, 11.16% talc, 9% polyethylene glycol (PEG) 400, 1.61% PEG 6000, 8.18% titanium dioxide, 0.19% red iron oxide, 0.15% highly disperse silica, 0.15% sodium docusate (% in each case % by weight). Coating took place in a known manner by spraying in a coating pan.
The density was determined in liquid helium using an ultrapycnometer 1000 supplied by Quantachrome Corp..
Example 1 PVP K 30 55.07% by weight Copolyvidone* K28 10.89% by weight Na2CO3 anhydrous (DAB) 10.00% by weight Ibuprofen 23.53% by weight Highly disperse silica 0.51% by weight (* Copolymer of 60$ by weight vinylpyrrolidone and 40% by weight vinyl acetate) Tablet weight: 850 mg without coating, coating 15 mg, Ibuprofen dose 200 mg, Release after 10 min 100%
Density of the uncoated tablet core 1.573 g/cm3 Example 2 PVP K 30 55.50% by weight Na2CO3, anhydrous 12.00% by weight Ibuprofen 32.00% by weight Highly disperse silica 0.5% by weight Tablet weight: 650 mg, coating 15 mg, Ibuprofen dose 200 mg Release after 10 min 100%
Density of the uncoated tablet core 1.841 g/cm3 Example 3 PVP K30 41.00% by weight Na2CO3 anhydrous 12.00% by weight Ibuprofen 47.00% by weight Tablet weight: 850 mg without coating Ibuprofen dose 400 mg Determination of the pharmacokinetic parameters The study was carried out with a single dose (200 mg) with triple crossover on healthy men.
A drug form from Example 1 was administered. For comparison, a commercially obtainable ibuprofen lysinate (Dolormin film-coated tablets, 342 mg of ibuprofen D,L-lysine salt, equivalent to 200 mg of ibuprofen) was administered.
Table Pharmacokinetic Example 1 Dolormin parameters AUC [mg*h/L] 62.78 57.41 Cmax [mg/L] 22.77 23.19 AUCo-ih [mg*h/L] 15.23 15.55 tmax [ h) 0.50 0.50 The geometric mean is indicated in each case (n=12).
Figure 1 depicts the blood plasma plot over a period of 12 hours. This is a plot of the plasma concentration [mg/L]
against the time [h) as geometric mean, n=12.
-0- Ibuprofen 200 mg film-coated tablet of Example 1 ..Ø.. Dolormin film-coated tablet There is very substantial identity of the plots.
In addition, the fracture surface of an uncoated tablet of Example 1 was examined under the electron microscope. A
metal-coated fracture surface was examined.
It is clearly evident from Figures 2a and 2b that there are pores open to the fracture surface. Closed pores are also evident as small circular depressions.
section 1: 80 C, section 2: 120 C, section 3: 130 C, section 4:
130 C, head: 130 C, die 130 C. The pressure in section 4 was 51.5 mbar. Bolus tablets were produced from the extrudate by the calendering process described in EP-A 240 906.
The release of active ingredient was measured by the USPXXIII
basket method. Determination takes place at 37 C in a no-change test at a pH of 7.2 and at 150 rpm. The test medium employed was a 0.05 molar aqueous potassium dihydrogen phosphate solution which had been adjusted to pH 7.2 with sodium hydroxide solution.
An appropriate amount of drug form was weighed out. The assay was carried out photometrically by.means of a derivative spectrum at 256 to 270 nm with external standard calibration.
The tablets were provided with a commercially obtainable coating (Opadry OY-S-24939 supplied by Colorcon), a 15% strength by weight aqueous dispersion of the following composition: 58.04%
hydroxypropylmethylcellulose (HPMC) with a viscosity of 6 mPas, 5.76% HPMC with a viscosity of 15 mPas, 5.76%
hydroxypropylcellulose, 11.16% talc, 9% polyethylene glycol (PEG) 400, 1.61% PEG 6000, 8.18% titanium dioxide, 0.19% red iron oxide, 0.15% highly disperse silica, 0.15% sodium docusate (% in each case % by weight). Coating took place in a known manner by spraying in a coating pan.
The density was determined in liquid helium using an ultrapycnometer 1000 supplied by Quantachrome Corp..
Example 1 PVP K 30 55.07% by weight Copolyvidone* K28 10.89% by weight Na2CO3 anhydrous (DAB) 10.00% by weight Ibuprofen 23.53% by weight Highly disperse silica 0.51% by weight (* Copolymer of 60$ by weight vinylpyrrolidone and 40% by weight vinyl acetate) Tablet weight: 850 mg without coating, coating 15 mg, Ibuprofen dose 200 mg, Release after 10 min 100%
Density of the uncoated tablet core 1.573 g/cm3 Example 2 PVP K 30 55.50% by weight Na2CO3, anhydrous 12.00% by weight Ibuprofen 32.00% by weight Highly disperse silica 0.5% by weight Tablet weight: 650 mg, coating 15 mg, Ibuprofen dose 200 mg Release after 10 min 100%
Density of the uncoated tablet core 1.841 g/cm3 Example 3 PVP K30 41.00% by weight Na2CO3 anhydrous 12.00% by weight Ibuprofen 47.00% by weight Tablet weight: 850 mg without coating Ibuprofen dose 400 mg Determination of the pharmacokinetic parameters The study was carried out with a single dose (200 mg) with triple crossover on healthy men.
A drug form from Example 1 was administered. For comparison, a commercially obtainable ibuprofen lysinate (Dolormin film-coated tablets, 342 mg of ibuprofen D,L-lysine salt, equivalent to 200 mg of ibuprofen) was administered.
Table Pharmacokinetic Example 1 Dolormin parameters AUC [mg*h/L] 62.78 57.41 Cmax [mg/L] 22.77 23.19 AUCo-ih [mg*h/L] 15.23 15.55 tmax [ h) 0.50 0.50 The geometric mean is indicated in each case (n=12).
Figure 1 depicts the blood plasma plot over a period of 12 hours. This is a plot of the plasma concentration [mg/L]
against the time [h) as geometric mean, n=12.
-0- Ibuprofen 200 mg film-coated tablet of Example 1 ..Ø.. Dolormin film-coated tablet There is very substantial identity of the plots.
In addition, the fracture surface of an uncoated tablet of Example 1 was examined under the electron microscope. A
metal-coated fracture surface was examined.
It is clearly evident from Figures 2a and 2b that there are pores open to the fracture surface. Closed pores are also evident as small circular depressions.
Claims (5)
1. A fast-acting analgesic comprising, as analgesic substance, ibuprofen in an adjuvant matrix, having a porous structure and a density of greater than 1 and up to 2.5 g/cm3, comprising as matrix adjuvants at least one water-soluble polymeric binder and a carbonate selected from among the alkali metal or alkaline earth metal carbonates or bicarbonates of sodium and potassium.
2. An analgesic as claimed in claim 1, having a density of from 1.4 to 1.9 g/cm3.
3. An analgesic as claimed in claim 1 or 2, comprising as water-soluble polymeric binder, a homo- or copolymer of N-vinylpyrrolidone.
4. An analgesic as claimed in any one of claims 1 to 3, comprising ibuprofen as racemate.
5. A process for producing an analgesic as claimed in any one of claims 1 to 4, by mixing ibuprofen with the matrix adjuvants with application of shear forces and extrusion through a die with subsequent shaping, wherein the plasticized mixture is exposed to a vacuum before extrusion through the die.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19733505.5 | 1997-08-01 | ||
| DE19733505A DE19733505A1 (en) | 1997-08-01 | 1997-08-01 | Fast acting analgesic |
| PCT/EP1998/004552 WO1999006038A1 (en) | 1997-08-01 | 1998-07-21 | Fast-acting analgesic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2298659A1 CA2298659A1 (en) | 1999-02-11 |
| CA2298659C true CA2298659C (en) | 2007-09-11 |
Family
ID=7837827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002298659A Expired - Fee Related CA2298659C (en) | 1997-08-01 | 1998-07-21 | Fast-acting analgesic |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US6322816B1 (en) |
| EP (1) | EP1001757B1 (en) |
| JP (1) | JP2001511446A (en) |
| KR (1) | KR100538201B1 (en) |
| CN (1) | CN1189165C (en) |
| AT (1) | ATE316372T1 (en) |
| AU (1) | AU748772B2 (en) |
| BR (1) | BR9810851A (en) |
| CA (1) | CA2298659C (en) |
| DE (2) | DE19733505A1 (en) |
| DK (1) | DK1001757T3 (en) |
| EA (1) | EA002853B1 (en) |
| ES (1) | ES2256950T3 (en) |
| PT (1) | PT1001757E (en) |
| WO (1) | WO1999006038A1 (en) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6869770B1 (en) | 1998-03-20 | 2005-03-22 | The Curators Of The University Of Missouri | Compositions and methods for early pregnancy diagnosis |
| EP1204410B1 (en) | 1999-07-30 | 2012-09-12 | Capsugel Belgium NV | Multi-component pharmaceutical dosage form |
| US7364752B1 (en) | 1999-11-12 | 2008-04-29 | Abbott Laboratories | Solid dispersion pharamaceutical formulations |
| ATE329579T1 (en) | 1999-11-12 | 2006-07-15 | Abbott Lab | SOLID DISPERSION WITH RITONAVIR, FENOFIBRATE OR GRISEOFULVIN |
| EP1116485A3 (en) * | 2000-01-10 | 2002-01-16 | Gerhard Dr. Gergely | Instant granulate and process for its preparation |
| DE10026698A1 (en) | 2000-05-30 | 2001-12-06 | Basf Ag | Self-emulsifying active ingredient formulation and use of this formulation |
| GB0102342D0 (en) | 2001-01-30 | 2001-03-14 | Smithkline Beecham Plc | Pharmaceutical formulation |
| US7883721B2 (en) | 2001-01-30 | 2011-02-08 | Smithkline Beecham Limited | Pharmaceutical formulation |
| US7842308B2 (en) * | 2001-01-30 | 2010-11-30 | Smithkline Beecham Limited | Pharmaceutical formulation |
| GB0113841D0 (en) * | 2001-06-07 | 2001-08-01 | Boots Co Plc | Therapeutic agents |
| US20040253312A1 (en) * | 2001-09-28 | 2004-12-16 | Sowden Harry S. | Immediate release dosage form comprising shell having openings therein |
| BR0212950A (en) * | 2001-09-28 | 2004-10-26 | Mcneil Ppc Inc | Composite dosage forms having an inserted portion |
| US20050202090A1 (en) * | 2002-01-03 | 2005-09-15 | Clarke Allan J. | Novel pharmaceutical dosage forms and method for producing same |
| PT1638527E (en) * | 2003-06-27 | 2007-02-28 | Bioprogress Spa | Composite product obtainable by cogrinding of an active principle with a copolymer n-vinyl-2-pyrrolidone/vinyl-acetate |
| TW200526274A (en) | 2003-07-21 | 2005-08-16 | Smithkline Beecham Plc | Pharmaceutical formulations |
| US8377952B2 (en) | 2003-08-28 | 2013-02-19 | Abbott Laboratories | Solid pharmaceutical dosage formulation |
| US8025899B2 (en) | 2003-08-28 | 2011-09-27 | Abbott Laboratories | Solid pharmaceutical dosage form |
| US8067029B2 (en) | 2004-01-13 | 2011-11-29 | Mcneil-Ppc, Inc. | Rapidly disintegrating gelatinous coated tablets |
| US7879354B2 (en) * | 2004-01-13 | 2011-02-01 | Mcneil-Ppc, Inc. | Rapidly disintegrating gelatinous coated tablets |
| FR2865648B1 (en) * | 2004-02-03 | 2006-06-30 | Philippe Perovitch | METHOD FOR DIFFUSION OF INSOLUBLE MOLECULES IN AQUEOUS MEDIUM AND COMPOSITION IMPLEMENTING SAID METHOD |
| PE20060003A1 (en) | 2004-03-12 | 2006-03-01 | Smithkline Beecham Plc | POLYMERIC PHARMACEUTICAL FORMULATION FOR INJECTION MOLDING |
| US9205054B2 (en) * | 2005-03-22 | 2015-12-08 | Losan Pharma Gmbh | Solubilized ibuprofen |
| EP1800667A1 (en) | 2005-12-23 | 2007-06-27 | Losan Pharma GmbH | Rapidly solubilizing ibuprofen granulate |
| DE102005037630A1 (en) | 2005-08-09 | 2007-02-15 | Glatt Gmbh | Process for the preparation of particles of pharmaceutical substances, particles of pharmaceutical substances and their use |
| EP2219624A2 (en) | 2007-11-08 | 2010-08-25 | Glaxo Group Limited | Pharmaceutical formulations |
| CN101918445B (en) | 2007-12-13 | 2014-05-14 | 孟山都技术公司 | Compositions and methods for early pregnancy diagnosis |
| WO2009126889A1 (en) * | 2008-04-10 | 2009-10-15 | The Curators Of The University Of Missouri | Assays for detecting pregnancy- associated glycoproteins |
| MX337488B (en) * | 2008-07-21 | 2016-03-08 | Si Group Inc | High content sodium ibuprofen granules, their preparation and their use in preparing non-effervescent solid dosage forms. |
| US9629809B2 (en) | 2008-07-21 | 2017-04-25 | Si Group, Inc. | High content sodium ibuprofen granules, their preparation and their use in preparing non-effervescent solid dosage forms |
| CN111419807A (en) * | 2020-04-14 | 2020-07-17 | 中国人民解放军军事科学院军事医学研究院 | Impression sheet prepared based on 3D printing mold and photocuring material |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4704436A (en) * | 1986-05-02 | 1987-11-03 | Barabas Eugene S | Water soluble complex of a poly(vinylpyrrolidone) copolymer and α-methyl-(2-methylpropyl)benzene acetic acid |
| ATE50493T1 (en) | 1986-11-14 | 1990-03-15 | Puetter Medice Chem Pharm | MEDICATION CONTAINING IBUPROFEN. |
| DE4140185C2 (en) * | 1991-12-05 | 1996-02-01 | Alfatec Pharma Gmbh | Medicament containing a 2-arylpropionic acid derivative in nanosol form and its preparation |
| DE19509807A1 (en) | 1995-03-21 | 1996-09-26 | Basf Ag | Process for the preparation of active substance preparations in the form of a solid solution of the active substance in a polymer matrix, and active substance preparations produced using this method |
| US5965161A (en) * | 1994-11-04 | 1999-10-12 | Euro-Celtique, S.A. | Extruded multi-particulates |
| DE19602206A1 (en) * | 1996-01-23 | 1997-07-24 | Basf Ag | Preparations of nonsteroidal analgesics |
| US5985312A (en) * | 1996-01-26 | 1999-11-16 | Brown University Research Foundation | Methods and compositions for enhancing the bioadhesive properties of polymers |
| DE19635676A1 (en) * | 1996-09-03 | 1998-03-05 | Basf Ag | Solid foamed active ingredient preparations |
-
1997
- 1997-08-01 DE DE19733505A patent/DE19733505A1/en not_active Withdrawn
-
1998
- 1998-07-21 DK DK98937580T patent/DK1001757T3/en active
- 1998-07-21 KR KR10-2000-7001053A patent/KR100538201B1/en not_active IP Right Cessation
- 1998-07-21 DE DE59813360T patent/DE59813360D1/en not_active Expired - Fee Related
- 1998-07-21 CN CNB988078600A patent/CN1189165C/en not_active Expired - Fee Related
- 1998-07-21 BR BR9810851-4A patent/BR9810851A/en not_active Application Discontinuation
- 1998-07-21 CA CA002298659A patent/CA2298659C/en not_active Expired - Fee Related
- 1998-07-21 AT AT98937580T patent/ATE316372T1/en not_active IP Right Cessation
- 1998-07-21 EP EP98937580A patent/EP1001757B1/en not_active Expired - Lifetime
- 1998-07-21 PT PT98937580T patent/PT1001757E/en unknown
- 1998-07-21 JP JP2000504852A patent/JP2001511446A/en not_active Withdrawn
- 1998-07-21 US US09/463,849 patent/US6322816B1/en not_active Expired - Fee Related
- 1998-07-21 ES ES98937580T patent/ES2256950T3/en not_active Expired - Lifetime
- 1998-07-21 AU AU86322/98A patent/AU748772B2/en not_active Ceased
- 1998-07-21 WO PCT/EP1998/004552 patent/WO1999006038A1/en active IP Right Grant
- 1998-07-21 EA EA200000132A patent/EA002853B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001511446A (en) | 2001-08-14 |
| KR100538201B1 (en) | 2005-12-22 |
| DK1001757T3 (en) | 2006-05-22 |
| AU748772B2 (en) | 2002-06-13 |
| KR20010022468A (en) | 2001-03-15 |
| ES2256950T3 (en) | 2006-07-16 |
| CN1265587A (en) | 2000-09-06 |
| EA200000132A1 (en) | 2000-08-28 |
| EA002853B1 (en) | 2002-10-31 |
| DE59813360D1 (en) | 2006-04-13 |
| WO1999006038A1 (en) | 1999-02-11 |
| AU8632298A (en) | 1999-02-22 |
| EP1001757B1 (en) | 2006-01-25 |
| CA2298659A1 (en) | 1999-02-11 |
| BR9810851A (en) | 2000-07-25 |
| US6322816B1 (en) | 2001-11-27 |
| PT1001757E (en) | 2006-05-31 |
| DE19733505A1 (en) | 1999-02-04 |
| EP1001757A1 (en) | 2000-05-24 |
| CN1189165C (en) | 2005-02-16 |
| ATE316372T1 (en) | 2006-02-15 |
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Legal Events
| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKLA | Lapsed |