WO2022178604A1 - Composição farmacêutica tópica espumável - Google Patents
Composição farmacêutica tópica espumável Download PDFInfo
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- WO2022178604A1 WO2022178604A1 PCT/BR2022/050021 BR2022050021W WO2022178604A1 WO 2022178604 A1 WO2022178604 A1 WO 2022178604A1 BR 2022050021 W BR2022050021 W BR 2022050021W WO 2022178604 A1 WO2022178604 A1 WO 2022178604A1
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- pharmaceutical composition
- minoxidil
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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
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
- A61K31/506—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim not condensed and containing further heterocyclic rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
- A61K8/046—Aerosols; Foams
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
- A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
- A61K8/442—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof substituted by amido group(s)
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
- A61K8/494—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with more than one nitrogen as the only hetero atom
- A61K8/4953—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with more than one nitrogen as the only hetero atom containing pyrimidine ring derivatives, e.g. minoxidil
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
- A61K8/4993—Derivatives containing from 2 to 10 oxyalkylene groups
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q7/00—Preparations for affecting hair growth
Definitions
- the present invention relates to a foamable topical pharmaceutical composition, with a pleasant sensation, which inhibits the formation of crystals of the active Minoxidil.
- the present invention is found in the fields of pharmacotechnics and pharmaceutical technology.
- Androgenic alopecia or male pattern baldness is the most common type of hair loss in men, affecting up to 70% of all men in adulthood. Androgenic alopecia occurs in hair follicles in a certain area of the scalp, leading to follicular miniaturization, a process by which the hair shaft becomes thinner and shorter. Although in this process the follicles remain alive, there is no new hair growth.
- Minoxidil is a potent vasodilator and is currently indicated for the treatment of androgenic alopecia and female pattern alopecia. Its mechanism of action as a hair growth stimulator has not yet been fully elucidated, but it is believed that the drug acts in different ways that culminate in stimulating hair growth, such as:
- VEGF vascular endothelial growth factor
- Minoxidil works by opening adenosine triphosphate (ATP) sensitive potassium channels in vascular smooth muscle, causing it to relax and reducing blood pressure in hair follicles.
- ATP adenosine triphosphate
- Minoxidil is restricted to the hair follicles and the objective of the treatment is to reach the hair bulb in effective concentrations and at the same time prevent its passage to the deeper layers of the skin and, consequently, to the bloodstream. , obtaining only a local topical effect.
- the measurement of systemic drug absorption is more related to safety than to local efficacy, which for Minoxidil must be below the concentration associated with adverse effects (20 ng/mL).
- Minoxidil has low solubility in water (2.2 mg/ml_), moderate solubility in ethanol (29 mg/ml_) and high solubility in propylene glycol (75 mg/ml_).
- solubility of Minoxidil is the physicochemical parameter that comprises the biggest challenge to be overcome in terms of formulation.
- Minoxidil can be found in different dosage forms, such as immediate release tablet (Loniten ® ), topical capillary solution (Rogaine ® solution, Aloxidil ® , Pant ® , among others) and foam, available only in some countries, under the trade name of Rogaine ® Foam and generic products with the same qualitative composition.
- the primary packaging in general, is a bottle with a spray valve for application or a dropper pipette.
- the foam pharmaceutical form was registered for the first time in 2006, in the United States, by the company Pharmacia & Upjohn (of the Pfizer group) under the trade name of Rogaine ® .
- the drug composition is described in US6946120 patent. It reports a topical composition with at least 5% (w/w) Minoxidil, containing water and/or short acyl alcohol, a co-solvent, and pH less than or equal to 7.
- the patent specification presents 12 different examples of formulation with different proportions and alternative types of acid and co-solvents.
- ethanol percentage is close to or exceeds 50% of the formulation weight; water-insoluble surfactants are also used, giving rise to an emulsion, which in this case makes it possible to apply the product only through a package containing a propellant agent, as stated in its claims.
- the high pressure due to the propellant agent, enables the expansion of the liquid at high speed and the formation of a large amount of small bubbles.
- bubbles have a tendency to agglomerate and coalesce, the high viscosity slows the flow of liquid. and the waxy surfactants form an “insoluble” adsorption layer around the bubbles.
- Minoxidil The pharmacological activity of Minoxidil begins after the conversion of its molecule into Minoxidil sulfate by a sulfotransferase enzyme present in the scalp.
- a sulfotransferase enzyme present in the scalp.
- the efficiency and effectiveness of the treatment are directly associated with the concentration of the active molecule that reaches the hair bulb of the hair follicle.
- it is a topical product, it must provide a pleasant sensation to the user, be easy to apply and have good spreadability.
- a technical problem observed in formulations containing Minoxidil is related to the organoleptic properties, mainly the sensory part.
- US4828837 reports a composition in which Minoxidil is complexed to an antipathic compound with pKa less than 5, containing a single lipophilic chain and a polar moiety selected from sulfate, sulfonate, phosphate or phosphonate chemical groups by at least about 1 : 1 .
- Preferred antipathic compounds include sulfosuccinic acid hemiesters, alkyl phosphonates, phosphate esters, and ethoxylated acid hemiesters, such as the free acids or lauryl ether, lauryl or oleamido polyethylene glycol sulfosuccinate.
- the document proposes as a final pharmaceutical form for the product an ointment or cream, in an aqueous vehicle and preferably dispersed in fluorochlorocarbon, to aerosol spray application.
- the patient is likely to feel uncomfortable when using it, since it is a leave-on product (no rinse formulation that must be used on the scalp when the hair is clean), with a sensorial oily and sticky.
- Figure 1 shows: (A) and (B) foam formed by the foamable aqueous solution TEST 4, using a bottle with a foaming pump, supplied by the company Emphasys ® ; and (C) Transmission Optical Microscopy image of the foam from TEST 4, at 2.5x magnification.
- Figure 2 shows: photographs of Petri dishes containing the foam of the Rogaine ® product (1A to 1C) and foam formed by the foamable aqueous solution of the present invention obtained from Example 2 (2A to 2C), respectively , initially (A), after 1 h (B) and after 12 h (C) in exposure to ambient conditions (20 °C and 60% RH); Optical Microscopy images with polarized light obtained with 5x magnification that indicate the formation of microcrystals after 12 h in the foam of the Rogaine ® product (1 D) and absence of crystals after 12 h in the foam formed by the foamy aqueous solution of Example 2 (2D) ).
- Figure 3 shows: photographs of Petri dishes containing the solutions of the products Aloxidil ® (1A and 1 C), Pant ® (2A and 2C), Rogaine ® emulsion (3A and 3C) and solution of the present invention obtained at from Example 2 (4A and 4C) after 12h (A) and 24h (C), respectively, at ambient conditions (20°C and 60% RH); Optical Microscopy images obtained with 5x magnification that indicate the formation of crystals in all products Aloxidil ® (1 B and 1 D), Pant ® (2B and 2D) and Rogaine ® emulsion (3B and 3D) after 12 h (B ) and 24 h (D), respectively, except in the solution of Example 2 (4B and 4D).
- Figure 4 shows the Raman spectra in the low frequency region for: Minoxidil raw material (A) and after 12 h of exposure at 20 °C and 60% RH for the crystals obtained from commercial products Aloxidil ® (B ), Pant ® (C) and Rogaine ® emulsion (D), and for the solution of the present invention obtained from Example 2 (E) and its foam (F) both with visible absence of crystals.
- Figure 5 shows the Raman spectra in the region of average frequencies for: (A) Minoxidil raw material, for the crystals obtained from commercial products Rogaine ® emulsion (B) and solutions Aloxidil ® (C) and Pant ® (D) after 24 h exposure at 20 °C and 60% RH, and for the residue with no crystals for the solution of the present invention obtained from Example 2 (E), after 12 h exposure at 20 °C and 60% RH.
- the dotted rectangle indicates a characteristic band of Minoxidil, which is wider and less intense in the spectrum of the solution of the present invention, compared to the spectra of crystals formed in the products and raw material of pure Minoxidil.
- Figure 6 shows: photographs of Petri dishes containing the solution of the present invention (A) and the foam generated from it (B), after 7 days of exposure at 20 °C and 60% RH. The presence of crystals was not observed even after analysis by Optical Microscopy.
- Figure 7 shows the evaluation of the degradation products generated from the composition of the present invention obtained from Example 2, containing 5% in (m/v) of Lactic Acid and 5% in (m/v) of Minoxidil, after 1 month of stability study at 40 °C and 50 °C.
- Figure 8 shows the evaluation of the degradation products generated from the composition of the present invention obtained from Example 2, containing equimolar amounts of Lactic Acid and Minoxidil, after 1 month of stability study at 40 °C and 50 ° ⁇ .
- Figure 9 shows the cutaneous retention of Minoxidil after 24 h of study in the stratum corneum (A) and in the epidermis + dermis (B) of the solution of the present invention lot 397/19 and the commercial product Aloxidil ® lot S906.
- the present invention describes a foamable topical pharmaceutical composition of Minoxidil that inhibits the formation of drug crystals.
- Said composition comes in the form of a foamable solution, stored in a bottle with an applicator selected from a dropper, foaming pump or spray, and has the advantages of inhibiting the formation of drug crystals and presenting a pleasant tactile sensation, in addition to of a local action on the hair follicles.
- the present invention presents the following objects as inventive concepts.
- the present invention presents as a first object the topical pharmaceutical composition in foamable solution, composed of Minoxidil, a water-miscible organic solvent, an organic acid, at least one co-solvent, at least one amphoteric surfactant, at least one non-ionic surfactant , at least one antioxidant and water.
- the present invention has as a second object the use of the pharmaceutical composition for the manufacture of a drug useful for the treatment of alopecia and other related disorders, as described in the first object and in its embodiments.
- the present invention relates to a foamable topical pharmaceutical composition composed of Minoxidil, a water-miscible organic solvent, an organic acid, at least one co-solvent, at least one amphoteric surfactant, at least one non-active surfactant.
- ionic acid, at least one antioxidant and water obtained in an unexpected and surprising way, since in the state of the art there are no compositions with up to 7% Minoxidil, with the advantages of inhibiting the formation of drug crystals, presenting a pleasant tactile sensation, in addition to a topical action on hair follicles.
- the presence of water-miscible organic solvent is of fundamental importance for drug solubilization, whose amount varies from 1% to 50% (m/v). In addition, it acts as a preservative, inhibiting the growth of microorganisms and allows rapid drying of the product after application. Additionally, for the present invention, the amount of organic solvent should not exceed 50% of the composition mass/volume of the formulation in order not to limit the foaming process at the time of application of the product.
- the organic acid in adequate amounts, has the function of increasing the solubility of Minoxidil in aqueous formulations.
- organic acids are: lactic acid, uric acid, oxalic acid, L-tartaric acid, D-tartaric acid, gallic acid, formic acid, butyric acid, furoic acid, acetic acid, isovaleric acid, picric acid, pyruvic acid, glycolic acid, caproic acid, sorbic acid, propionic acid, caprylic acid, citric acid, butyric acid, benzoic acid, maleic acid, capric acid, salicylic acid, fumaric acid, trans-cinnamic acid, succinic acid, acetylsalicylic acid, malic acid and acid mystical.
- the co-solvent acts as a potent humectant, promoting skin hydration and preventing dryness due to the presence of organic solvent.
- the ideal amount of co-solvent in aqueous formulations is from 1 to 30% (w/v)
- Examples of co-solvent are: benzyl alcohol, glycerin, propylene glycol, polyethylene glycol, butylene glycol, pentylene glycol or mixtures thereof.
- antioxidants play the role of preventing or minimizing the degradation of actives and excipients susceptible to oxidation.
- antioxidants are: ascorbic acid, cysteine and derivatives, ascorbyl palmitate, hydroxybutyltoluene (BHT), hydroxybutylanisole, hypophosphorous acid, monothioglycerol, sodium ascorbate, sodium bisulfite, sodium metabisulfite, sodium formaldehyde, propyl gaiate, sodium thiosulfate or mixtures thereof, in an amount ranging from 0.1 to 1% (m/v).
- the present invention optionally comprises ingredients used in formulations for topical hair care, such as antibacterial agents, chelating systems, pH correctors, emulsifiers, preservatives, vitamins, perfumes, dyes, thickeners, photoprotective agents, among others.
- ingredients used in formulations for topical hair care such as antibacterial agents, chelating systems, pH correctors, emulsifiers, preservatives, vitamins, perfumes, dyes, thickeners, photoprotective agents, among others.
- Foam is a colloidal dispersion, where a gas is dispersed in a liquid.
- the presence of surfactants is essential so that the bubbles are formed and maintained and, consequently, give rise to the foam.
- Several factors can affect its stability such as liquid density, temperature, surface tension, type and concentration of surfactants, bubble size, among others.
- Surfactants are organic compounds that have a polar (“head”) and a nonpolar (“tail”) part in their molecule. They are classified as anionic, cationic, nonionic or amphoteric, according to the substituent present in the polar part.
- Cationic surfactants when ionized in water have a positively charged polar part. They are generally used in preparations that are washed off after use, such as shampoos, hair masks, and rinse-off creams. Because of this fact, cationic surfactants were not considered for the development of embodiments of the present invention.
- Anionic surfactants have the polar part negatively charged. They have strong detergent power, that is, they are able to efficiently remove residues from the surface of the hair, being mostly used in the composition of soaps and cleaning lotions. As a result, for the embodiments of the present invention, anionic surfactants were not used.
- Non-ionic surfactants in turn, have uncharged radicals. Its solubility in water will depend on substitutions along the chain, and as a result, there is a small variety of water-soluble non-ionic compounds. In general, during preparations it is necessary to heat the mixture to increase the kinetics. of the surfactant solubilization reaction, but most of them precipitate again after cooling. For example, this is the case of the commercial product Oleth-20 (cetearylglycoside), cited in the prior art as a foam stabilizer. In this way, the preparation of the pharmaceutical form is unfeasible, due to the formation of a second phase in the composition.
- non-ionic surfactants derived from polyoxyethylene and polyoxypropylene, lauryl polyglucoside, decyl polyglucoside, fatty acid diethanolamide (fatty acid amides), polyoxyethylene-10-dodecyl ether (C12E10), N,N-dimethyldodecylamine-N-oxide (DDAO) ) and N,N-dimethyloctylamine-N-oxide (DOAO), polysorbates, sorbitan esters, ethoxylated fatty alcohols and esters of glycol and glycerol.
- fatty acid diethanolamide fatty acid amides
- C12E10 polyoxyethylene-10-dodecyl ether
- DDAO N,N-dimethyldodecylamine-N-oxide
- DOAO N,N-dimethyloctylamine-N-oxide
- polysorbates sorbitan esters, ethoxylated fatty alcohols and est
- amphoteric surfactants present in their structure both anionic and cationic hydrophilic groups, which give it the ability to form cation or anion depending on the pH of the solution.
- these surfactants can be compatible with anionic, cationic and nonionic surfactants.
- this group are N-alkyl and C-alkyl betaine and sultaine, amino phosphatidyl alcohol, 3-(dodecyldimethyl ammonium) propane-1-sulfate (SB-12), 4-(dodecyldimethyl ammonium) butyrate (DAB), cocoamidopropyl betaine, alkylimidazoline and sodium cococarboxyamphoglycinate.
- the present invention uses the techniques of Optical Microscopy and Raman Spectroscopy in the regions of low frequencies (10 to 200 cm 1 ) and medium (300 to 1800 cm 1 ).
- the present invention uses the technique of vertical diffusion cells such as the Franz cell, equipped with synthetic or animal membrane .
- the present invention reveals adequate proportions of excipients in order to obtain a foamable aqueous solution composition of Minoxidil that inhibits crystal formation, with a pleasant tactile sensation.
- the present invention is defined by the following objects and their embodiments.
- the foamable topical pharmaceutical composition is a solution comprising:
- the pharmaceutical composition inhibits the formation of drug crystals.
- said water-miscible organic solvent is ethanol.
- said organic acid is selected from lactic acid, uric acid, oxalic acid, L-tartaric acid, D-tartaric acid, gallic acid, formic acid, butyric acid, furoic acid, acetic acid, isovaleric acid, picric acid, glycolic acid, caproic acid, sorbic acid, propionic acid, caprylic acid, citric acid, butyric acid, benzoic acid, maleic acid, capric acid, salicylic acid, fumaric acid, trans-cinnamic acid, succinic acid, acetylsalicylic acid, malic acid and myristic acid.
- said organic acid is lactic acid.
- said co-solvent is selected from glycerin, propylene glycol, polyethylene glycol, butylene glycol, pentylene glycol or mixtures thereof.
- said co-solvent is glycerin.
- said amphoteric surfactant is selected from N-alkyl and C-alkyl betaine and sultaine, amino phosphatidyl alcohol, 3-(dodecyldimethyl ammonium) propane-1-sulfate (SB-12) , 4-(dodecyldimethyl ammonium) butyrate (DAB), cocoamidopropyl betaine, alkylimidazoline, sodium cococarboxyamphoglycinate or mixtures thereof.
- said amphoteric surfactant is cocoamidopropyl betaine.
- said non-ionic surfactant is selected from polyoxyethylene and polyoxypropylene derivatives, lauryl polyglucoside, decyl polyglucoside, fatty acid diethanolamide (fatty acid amides), polyoxyethylene-10-dodecyl ether ( C12E10), N,N-dimethyldodecylamine-N-oxide (DDAO) and N,N-dimethyloctylamine-N-oxide (DOAO), polysorbates, sorbitan esters, ethoxylated fatty alcohols, glycol and glycerol esters or mixtures thereof.
- said nonionic surfactant is polysorbate 20.
- said antioxidant is selected from ascorbic acid, cysteine and derivatives, ascorbyl palmitate, hydroxybutyltoluene (BHT), hydroxybutylanisole, hypophosphorous acid, monothioglycerol, sodium ascorbate, sodium bisulfite, metabisulfite sodium, sodium formaldehyde, propyl gallate, sodium thiosulfate or mixtures thereof.
- said antioxidant is hydroxybutyltoluene (BHT).
- the foamable solution comprises:
- the storage of the pharmaceutical composition, defined in the first object and in its embodiments, is carried out in a bottle.
- said bottle contains an applicator selected from a dropper, foaming pump or spray.
- the use of the pharmaceutical composition comprises the manufacture of a medicament useful for the treatment of alopecia and other related disorders.
- TEST 4 was the solution that presented a foam closer to the desired characteristics for the product, with a slow drainage of liquid, sufficient residence time to allow the application of the formulation (approximately 2 minutes) and providing a pleasant sensorial to the end user.
- surfactants have the ability to form bubbles, as seen experimentally, the use of just one of them is not capable of generating a satisfactory foam.
- Figure 1 shows the foam formed by the preferred pharmaceutical composition of the invention, according to TEST 4, containing 3.5% in (m/v) of Polysorbate 20 and 2.0% in (m/v) of Cocoamidopropyl Betaine, with the use of a foaming pump supplied by the company Emphasys ® and the analysis by Optical Microscopy of the foam, showing the texture and consistency suitable for the application of the product.
- EXAMPLE 2 Composition of a foamable aqueous solution of Minoxidil at 50 mg/mL (5% in (m/v)) and its production process.
- Minoxidil composition was carried out in a stainless steel reactor with a capacity of 500 liters, under constant stirring at room temperature and protected from light, and which remained closed during the process in order to avoid evaporation of Ethanol.
- Ethanol and BHT were added, in order to guarantee the complete dissolution of the antioxidant, at a speed of 50 to 200rpm.
- Lactic Acid and Glycerin were added.
- Minoxidil was added to the reactor.
- Polysorbate 20 Cocoamidopropyl Betaine and Water were added, with a decrease in the stirring speed to 50 to 150rpm, to avoid foam formation.
- the pH of the formulation was measured and, finally, the product was packed in appropriate packaging.
- Minoxidil foam was prepared, initially adding Ethanol, Lactic Acid and Glycerin. After 5 minutes, Minoxidil was added to the reactor, at a speed of 50 to 200rpm. In an auxiliary reactor, Polysorbate 20 and BHT were added. After the solubilization of the BHT antioxidant, cocoamidopropyl betaine was added. The mixture was then added to the main reactor and the final volume was made up with water, with a decrease in the stirring speed to 50 to 150rpm, to avoid foam formation. After the end of the manipulation, the pH of the formulation was measured and finally the product was packed in a suitable package. EXAMPLE 3 - Comparative study of crystal formation.
- Figure 2 shows the photographs of Petri dishes containing the foam of the Rogaine ® product (1A to 1C) and the foam formed by the foamable aqueous solution of the present invention obtained from Example 2 (2A to 2C), respectively, initially, after 1 h after 12 h exposure at ambient conditions (20 °C and 60% RH); and Optical Microscopy images with polarized light obtained with 5x magnification that indicate the formation of microcrystals after 12 h in the foam of the Rogaine ® product (1 D), evidencing the presence of microcrystals, and absence of crystals after 12 h in the foam formed by the foamable aqueous solution of Example 2 (2D).
- Figure 3 shows the photographs of Petri dishes containing the solutions of the products Aloxidil ® (1A and 1 C), Pant ® (2A and 2C), Rogaine ® emulsion (3A and 3C) and solution of the present invention obtained from the Example 2 (4A and 4C) after 12 h (A) and 24 h (C), respectively, at ambient conditions (20 °C and 60% RH); Optical Microscopy images obtained with 5x magnification that indicate the formation of crystals in all products Aloxidil ® (1 B and 1 D), Pant ® (2B and 2D) and Rogaine ® emulsion (3B and 3D) after 12 h (B ) and 24 h (D), respectively, except in the solution of Example 2 (4B and 4D).
- the Raman spectrum was obtained for the pure drug in crystalline form.
- the Raman spectra in the low frequency region (10 to 200 cm 1 ) and in the medium frequency region (300 to 1800 cm 1 ) are shown respectively in Figures 4 and 5, for Minoxidil (A) and after 12 h of exposure to 20 °C and 60% RH for the crystals obtained from commercial products in the form of Aloxidil ® solution (B), Pant ® (C) and in the form of Rogaine ® emulsion (D), and for the solution of the present invention obtained from of Example 2 (E) and its foam (F), both with visible absence of crystals.
- the low frequency region containing intermolecular (or crystal lattice) vibration modes in the Raman spectrum can be used to characterize crystalline and amorphous materials.
- the analysis of the Raman spectra of Figure 4 indicates that the crystals formed in the solutions of Pant ® (Aché) and Aloxidil ® (TheraSkin) and the Rogaine ® emulsion are characteristic of Minoxidil in crystalline form.
- a spectral profile with broad bands would be observed. This profile is verified for Rogaine ® foam which has microcrystals as shown in Figure 2.
- the Raman spectra of the residues of the solution of the present invention indicate a pattern of amorphous material, as can be seen by the greater width of the bands in the Raman spectra presented in Figures 4 and 5, respectively, for the low and medium frequency regions.
- the band at approximately 630 cm 1 attributed to Minoxidil is wider and less intense in the spectrum of the solution of the present invention compared to the spectra of pure Minoxidil crystals and formed in commercial products. This result evidences the lower tendency of Minoxidil to crystallize in the solution of the present invention in relation to equivalent commercial products containing solutions or foam, even after the evaporation of volatiles from the formulation.
- Figure 6 shows the photographs of the Petri dish containing a solution prepared according to the teachings of Example 2 and applied to a Petri dish, maintained at 20 °C and 60% RH, for 7 days. The presence of crystals was not observed even after analysis by light microscopy.
- a relevant issue to be highlighted in the formulation is related to the amounts of organic acid, preferably Lactic Acid, and Minoxidil.
- the amounts of organic acid and Minoxidil must be equimolar, that is, the amount of acid must be equivalent in number of moles of the drug, in order to increase the stability of the formulation.
- the Franz cell follows the bicompartmental model of diffusion cells, having two compartments, one containing the drug (donor compartment) and another containing a solution where the drug is soluble, separated by a natural membrane.
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- Epidemiology (AREA)
- Birds (AREA)
- Chemical & Material Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP22758650.0A EP4282418A1 (en) | 2021-02-24 | 2022-01-27 | Foaming topical pharmaceutical composition |
MX2023008551A MX2023008551A (es) | 2021-02-24 | 2022-01-27 | Composicion farmaceutica topica espumosa. |
CONC2023/0010699A CO2023010699A2 (es) | 2021-02-24 | 2023-08-16 | Composición farmacéutica tópica espumosa |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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BR102021003531-5A BR102021003531A2 (pt) | 2021-02-24 | 2021-02-24 | Composição farmacêutica tópica espumável |
BRBR102021003531-5 | 2021-02-24 |
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WO2022178604A1 true WO2022178604A1 (pt) | 2022-09-01 |
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PCT/BR2022/050021 WO2022178604A1 (pt) | 2021-02-24 | 2022-01-27 | Composição farmacêutica tópica espumável |
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Country | Link |
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EP (1) | EP4282418A1 (pt) |
BR (1) | BR102021003531A2 (pt) |
CO (1) | CO2023010699A2 (pt) |
MX (1) | MX2023008551A (pt) |
WO (1) | WO2022178604A1 (pt) |
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WO1988001502A1 (en) | 1986-09-05 | 1988-03-10 | The Upjohn Company | Sebum-dissolving nonaqueous minoxidil formulation |
US4828837A (en) | 1987-03-30 | 1989-05-09 | Liposome Technology, Inc. | Non-crystalline minoxidil composition, its production and application |
US5030442A (en) | 1987-03-30 | 1991-07-09 | Liposome Technology, Inc. | Non-crystalline minoxidil composition |
WO1999027966A1 (fr) | 1997-12-03 | 1999-06-10 | Taisho Pharmaceutical Co., Ltd. | Composition de preparation liquide a base de minoxidil |
WO2001076541A1 (fr) | 2000-04-07 | 2001-10-18 | Taisho Pharmaceutical Co. Ltd. | Compositions stimulant la pousse des cheveux |
WO2002011698A1 (en) | 2000-08-09 | 2002-02-14 | Pharmacia Ab | Novel compositions of minoxidil |
WO2002092092A1 (fr) | 2001-05-15 | 2002-11-21 | Taisho Pharmaceutical Co., Ltd. | Composition liquide contenant du minoxidil |
US20020172649A1 (en) * | 1998-04-22 | 2002-11-21 | So Tony Wai-Chiu | Pharmaceutical composition |
US20050079139A1 (en) | 2003-10-11 | 2005-04-14 | Jacques Elizabeth Joan | Minoxidil pharmaceutical foam formulation |
US20110189114A1 (en) * | 2010-01-29 | 2011-08-04 | Nyangenya Maniga | minoxidil composition and non-aerosol, non-spray foam method of delivery therefor |
WO2012106249A2 (en) | 2011-01-31 | 2012-08-09 | Allergan, Inc. | Method of enhancing hair growth |
JP2017186310A (ja) * | 2016-03-30 | 2017-10-12 | 大正製薬株式会社 | エアゾール剤 |
US20190083492A1 (en) * | 2015-10-06 | 2019-03-21 | Assos Ilaç Kimya Gida Ürünleri Üretim Ve Tic. A. ? . | Topical minoxidil composition |
JP2021134164A (ja) * | 2020-02-26 | 2021-09-13 | 東亜薬品株式会社 | ミノキシジル及びパントテニールエチルエーテルを含有する育毛外用剤、並びにそのパントテニールエチルエーテルの安定化及びミノキシジル等の結晶化抑制方法 |
-
2021
- 2021-02-24 BR BR102021003531-5A patent/BR102021003531A2/pt unknown
-
2022
- 2022-01-27 EP EP22758650.0A patent/EP4282418A1/en active Pending
- 2022-01-27 MX MX2023008551A patent/MX2023008551A/es unknown
- 2022-01-27 WO PCT/BR2022/050021 patent/WO2022178604A1/pt active Application Filing
-
2023
- 2023-08-16 CO CONC2023/0010699A patent/CO2023010699A2/es unknown
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WO1988001502A1 (en) | 1986-09-05 | 1988-03-10 | The Upjohn Company | Sebum-dissolving nonaqueous minoxidil formulation |
US4828837A (en) | 1987-03-30 | 1989-05-09 | Liposome Technology, Inc. | Non-crystalline minoxidil composition, its production and application |
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WO1999027966A1 (fr) | 1997-12-03 | 1999-06-10 | Taisho Pharmaceutical Co., Ltd. | Composition de preparation liquide a base de minoxidil |
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WO2002092092A1 (fr) | 2001-05-15 | 2002-11-21 | Taisho Pharmaceutical Co., Ltd. | Composition liquide contenant du minoxidil |
US20050079139A1 (en) | 2003-10-11 | 2005-04-14 | Jacques Elizabeth Joan | Minoxidil pharmaceutical foam formulation |
US20110189114A1 (en) * | 2010-01-29 | 2011-08-04 | Nyangenya Maniga | minoxidil composition and non-aerosol, non-spray foam method of delivery therefor |
WO2012106249A2 (en) | 2011-01-31 | 2012-08-09 | Allergan, Inc. | Method of enhancing hair growth |
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JP2017186310A (ja) * | 2016-03-30 | 2017-10-12 | 大正製薬株式会社 | エアゾール剤 |
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Also Published As
Publication number | Publication date |
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MX2023008551A (es) | 2023-07-31 |
EP4282418A9 (en) | 2024-07-17 |
CO2023010699A2 (es) | 2023-09-08 |
EP4282418A1 (en) | 2023-11-29 |
BR102021003531A2 (pt) | 2022-08-30 |
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