WO2014010924A1 - Pharmaceutical composition for topical administration comprising vancomycin or its salt and dexamethasone phosphate or its salt - Google Patents

Pharmaceutical composition for topical administration comprising vancomycin or its salt and dexamethasone phosphate or its salt Download PDF

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Publication number
WO2014010924A1
WO2014010924A1 PCT/KR2013/006111 KR2013006111W WO2014010924A1 WO 2014010924 A1 WO2014010924 A1 WO 2014010924A1 KR 2013006111 W KR2013006111 W KR 2013006111W WO 2014010924 A1 WO2014010924 A1 WO 2014010924A1
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Prior art keywords
vancomycin
pharmaceutical composition
topical administration
dexamethasone
pharmaceutically acceptable
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PCT/KR2013/006111
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French (fr)
Inventor
Joo-Eun Kim
Seong-Bae Park
Young-Seong LEE
Myung-Young Park
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Yuhan Corporation
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Publication of WO2014010924A1 publication Critical patent/WO2014010924A1/en

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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
    • A61K9/08—Solutions
    • 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
    • A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
    • A61K31/57—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane or progesterone
    • A61K31/573—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane or progesterone substituted in position 21, e.g. cortisone, dexamethasone, prednisone or aldosterone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides
    • A61K38/04—Peptides having up to 20 amino acids in a fully defined sequence; Derivatives thereof
    • A61K38/14—Peptides containing saccharide radicals; Derivatives thereof, e.g. bleomycin, phleomycin, muramylpeptides or vancomycin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
    • A61K47/10—Alcohols; Phenols; Salts thereof, e.g. glycerol; Polyethylene glycols [PEG]; Poloxamers; PEG/POE alkyl ethers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
    • A61K47/14—Esters of carboxylic acids, e.g. fatty acid monoglycerides, medium-chain triglycerides, parabens or PEG fatty acid esters
    • 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
    • A61K9/0014—Skin, i.e. galenical aspects of topical compositions

Definitions

  • the present invention relates to a pharmaceutical composition for topical administration comprising vancomycin or its salt and dexamethasone phosphate or its salt.
  • Vancomycin is an antibiotic useful for treating an infection by methicillin-resistant strains including methicillin-resistant Staphylococcus epidemidis . Vancomycin is commercially available as a lyophilized injection or a frozen Ringer's solution, in order to ensure the stability thereof.
  • the lyophilized injection which is administered by dissolving in water for injection, saline, etc., should be used within 96 hours under the cold condition.
  • the frozen Ringer's solution requires frozen storage at -20°C.
  • Dexamethasone phosphate is a corticosteroid having potent anti-inflammatory activity. Especially, dexamethasone phosphate is useful for treating allergic diseases, skin disorders, inflammatory eye disease, and otitis externa/otitis media.
  • vancomycin and dexamethasone can achieve more excellent therapeutic effect than vancomycin monotherapy, in the treatment of inflammation (Smith MA, et al., J Infect Dis. 1997 Feb;175(2):462-6). Therefore, it is expected that a pharmaceutical composition containing vancomycin and dexamethasone as active ingredients can be used as a formulation for topical administration which is applicable to the eyes, ears, nose, or skin.
  • a pharmaceutical formulation for topical administration comprising both vancomycin and dexamethasone
  • the formulation requires having physical stability, without precipitation and/or micro-particle formation in an aqueous medium such as water for injection.
  • aqueous medium such as water for injection.
  • vancomycin and dexamethasone were administered by using separate syringes, in order to avoid precipitation.
  • the present inventors carried out various researches in order to develop a pharmaceutical composition for topical administration comprising vancomycin and dexamethasone, which has excellent stability without forming precipitation and/or micro-particles.
  • the present inventors found that the weight ratio of vancomycin and dexamethasone significantly affects the stability of the resulting formulation.
  • the present inventors found that, if vancomycin and dexamethasone were formulated into reconstitutable formulation form having two compartments (e.g., a vial or a plastic reservoir) along with using a specific weight ratio thereof, rapid reconstitution is accomplished, thereby being able to obtain a transparent solution without precipitation or gelation.
  • the reconstituted solution does not form precipitation and/or gelation even at room temperature for long duration (e.g., about 1 month); and shows minimized degradation products, thereby providing excellent physical and chemical stability. These properties provide very excellent convenience, in comparison with conventional vancomycin-containing frozen formulations which require frozen storage at -20°C.
  • a pharmaceutical composition for topical administration comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt, wherein (i) when the concentration of vancomycin or its pharmaceutically acceptable salt is not less than 1.0 %(w/v) based on the total composition, a weight ratio of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt is 1 : 0.02 to 0.1; and (ii) when the concentration of vancomycin or its pharmaceutically acceptable salt is less than 1.0 %(w/v) based on the total composition, a weight ratio of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt is 1 : 0.05 to 0.4.
  • the pharmaceutical composition may have a unit dosage form consisting of a first compartment comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt; and a second compartment comprising water.
  • the second compartment may further comprise glycerin; and the concentration of glycerin may be not more than 20.0 %(w/v) based on the total composition.
  • the second compartment may further comprise a chelating agent of 0.001 to 0.1 %(w/v) and/or a preservative of 0.001 to 0.18 %(w/v), based on the total composition.
  • the weight ratio of vancomycin and dexamethasone significantly affects the stability of the resulting formulation.
  • vancomycin and dexamethasone were formulated into reconstitutable formulation form having two compartments (e.g., a vial or a plastic reservoir) along with using a specific weight ratio thereof, rapid reconstitution is accomplished, thereby being able to obtain a transparent solution without precipitation or gelation.
  • the reconstituted solution does not form precipitation and/or gelation even at room temperature for long duration (e.g., about 1 month); and shows minimized degradation products, thereby providing excellent physical and chemical stability. Therefore, the pharmaceutical composition according to the present invention can be used not only in a single administration, but also in multiple administrations for long duration along with being stored at room temperature (about 25°C).
  • the present invention provides a pharmaceutical composition for topical administration, comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt, wherein (i) when the concentration of vancomycin or its pharmaceutically acceptable salt is not less than 1.0 %(w/v) based on the total composition, a weight ratio of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt is 1 : 0.02 to 0.1; and (ii) when the concentration of vancomycin or its pharmaceutically acceptable salt is less than 1.0 %(w/v) based on the total composition, a weight ratio of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt is 1 : 0.05 to 0.4.
  • the weight ratio of vancomycin and dexamethasone significantly affects the stability of the resulting formulation. That is, when vancomycin and dexamethasone are used in the above specific weight ratio, there is no precipitation and/or gelation in an aqueous medium.
  • the pharmaceutical composition according to the present invention may be applied to the eye, ear, nose, skin, etc.; preferably formulated into an otic formulation form.
  • the pharmaceutically acceptable salt of vancomycin may be a conventional acid addition salt, including vancomycin hydrochloride, vancomycin sulfate, etc.
  • the pharmaceutically acceptable salt of vancomycin may be vancomycin hydrochloride.
  • the concentration of vancomycin or its pharmaceutically acceptable salt may be a therapeutically effective amount range, preferably 0.3 to 4.0 %(w/v) based on the total composition.
  • the pharmaceutically acceptable salt of dexamethasone phosphate may be a conventional metal salt, including dexamethasone monosodium phosphate, dexamethasone disodium phosphate, etc.
  • the pharmaceutically acceptable salt of dexamethasone phosphate may be dexamethasone disodium phosphate.
  • Dexamethasone phosphate or its pharmaceutically acceptable salt may be used in a therapeutically effective amount, within the above weight ratio.
  • dexamethasone phosphate or its pharmaceutically acceptable salt when the concentration of vancomycin or its pharmaceutically acceptable salt is not less than 1.0 %(w/v), dexamethasone phosphate or its pharmaceutically acceptable salt may be used in a concentration of 0.02 to 0.4 %(w/v); and when the concentration of vancomycin or its pharmaceutically acceptable salt is less than 1.0 %(w/v), dexamethasone phosphate or its pharmaceutically acceptable salt may be used in a concentration of 0.025 to 0.2 %(w/v).
  • concentration of dexamethasone phosphate or its pharmaceutically acceptable salt is determined within the above weight ratio.
  • the pharmaceutical composition may have a unit dosage form consisting of a first compartment comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt; and a second compartment comprising water (for example, water for injection).
  • the first compartment or the second compartment may be in a vial form or a plastic reservoir form.
  • the first compartment may comprise a simple mixture of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt. And also, in order to accurately adjust the amounts of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt, the first compartment may comprise a lyophilized product thereof. That is, the first compartment may comprise a solid obtained by lyophilizing an aqueous solution comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt.
  • the second compartment may further comprise glycerin as a stabilizing agent, in addition to water (for example, water for injection).
  • Glycerin is a non-aqueous solvent which can be used in the ear, eye, or nasal mucosa.
  • the concentration of glycerin may be not more than 20.0 %(w/v), preferably 0.5 to 10 %(w/v), based on the total composition, in terms of chemical stability and irritancy.
  • the second compartment may further comprise a chelating agent of 0.001 to 0.1 %(w/v) and/or a preservative of 0.001 to 0.18 %(w/v), based on the total composition.
  • the chelating agent may be an edetate salt [for example, disodium edetate (including its hydrate), trisodium edetate (including its hydrate), tetrasodium edetate (including its hydrate), etc.] or diethyleneamine pentaacetate, but not limited thereto.
  • the preservative may be one or more selected from methylparaben, ethylparaben, propylparaben (including isopropylparaben), isobutylparaben, etc.
  • a pharmaceutical composition for topical administration consisting of 0.3 %(w/v) of vancomycin hydrochloride, 0.1 %(w/v) of dexamethasone disodium phosphate, 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
  • a pharmaceutical composition for topical administration consisting of a vial comprising 0.3 %(w/v) of vancomycin hydrochloride and 0.1 %(w/v) of dexamethasone disodium phosphate; and a plastic reservoir comprising 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
  • a pharmaceutical composition for topical administration consisting of 1.0 %(w/v) of vancomycin hydrochloride, 0.1 %(w/v) of dexamethasone disodium phosphate, 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
  • a pharmaceutical composition for topical administration consisting of a vial comprising 1.0 %(w/v) of vancomycin hydrochloride and 0.1 %(w/v) of dexamethasone disodium phosphate; and a plastic reservoir comprising 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
  • a pharmaceutical composition for topical administration consisting of 2.0 %(w/v) of vancomycin hydrochloride, 0.1 %(w/v) of dexamethasone disodium phosphate, 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
  • a pharmaceutical composition for topical administration consisting of a vial comprising 2.0 %(w/v) of vancomycin hydrochloride and 0.1 %(w/v) of dexamethasone disodium phosphate; and a plastic reservoir comprising 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
  • a pharmaceutical composition for topical administration consisting of 3.0 %(w/v) of vancomycin hydrochloride, 0.1 %(w/v) of dexamethasone disodium phosphate, 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
  • a pharmaceutical composition for topical administration consisting of a vial comprising 3.0 %(w/v) of vancomycin hydrochloride and 0.1 %(w/v) of dexamethasone disodium phosphate; and a plastic reservoir comprising 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
  • compositions comprising vancomycin hydrochloride and dexamethasone disodium phosphate were prepared according to the components and amounts shown in Table 1.
  • the amounts of Table 1 represent in the amount based on the solution obtained by mixing the first compartment and the second compartment [%(w/v)],.
  • Vancomycin hydrochloride was completely dissolved in water for injection (900 mL). While stirring the resulting solution, dexamethasone disodium phosphate was added thereto and then completely dissolved. After the volume of the solution was adjusted to 1,000 mL with water for injection, the solution was stirred for about 30 minutes. The resulting solution was subject to sterile filtration, decanted into sterilized vials, and then lyophilized. Each vial was sealed with a rubber stopper.
  • Water for injection (900 mL) was heated to about 90°C and then propylparaben and methylparaben were dissolved therein. The resulting solution was cooled to room temperature and then disodium edetate dihydrate and glycerin were dissolved therein. After the volume of the solution was adjusted to 1,000 mL with water for injection, the solution was stirred for about 30 minutes. The resulting solution was subject to sterile filtration, decanted into sterilized plastic reservoirs, each of which was then closed with a sterilized sealing cap.
  • Vancomycin hydrochloride was dissolved in water for injection in predetermined concentrations shown in Table 2. While stirring the resulting solution, dexamethasone disodium phosphate was added thereto in various concentrations (see Table 2) and then any precipitation was observed with naked eyes. The results are shown in Table 2.
  • Table 2 the term 'Vancomycin' refers to vancomycin hydrochloride; and the term 'Dex' refers to dexamethasone disodium phosphate.
  • '%' means %(w/v); 'O' means a transparent solution; and 'X' means precipitation-occurrence.
  • the first compartments were prepared in the same procedures as in Example 1, by fixing the concentration of vancomycin hydrochloride to 1.0 %(w/v) and adjusting the amount of dexamethasone disodium phosphate as shown in Table 3. Each resulting first compartment was dissolved in water for injection. Each concentration of Table 3 represents the concentration of the final formulation obtained by adding water for injection thereto. The initial amount of degradation products in each solution was measured; and then the amount thereof was also measured after storing at room temperature (25 °C) for 1 month. The results are shown in Table 4.
  • the first compartments were prepared in the same procedures as in Example 1, by fixing the concentration of vancomycin hydrochloride to 2.5 %(w/v) and adjusting the amount of dexamethasone disodium phosphate as shown in Table 5.
  • Each concentration of Table 5 represents the concentration of the final formulation obtained by adding water for injection thereto.
  • the chemical stability of each solution was evaluated in the same manners as in the above (1). The results are shown in Table 6.
  • the first compartments were prepared in the same procedures as in Example 1, by fixing the concentration of vancomycin hydrochloride to 4.0 %(w/v) and adjusting the amount of dexamethasone disodium phosphate as shown in Table 7.
  • Each concentration of Table 7 represents the concentration of the final formulation obtained by adding water for injection thereto.
  • the chemical stability of each solution was evaluated in the same manners as in the above (1). The results are shown in Table 8.
  • the first compartments were prepared in the same procedures as in Example 1, by fixing the concentration of vancomycin hydrochloride to 0.3 %(w/v) and adjusting the amount of dexamethasone disodium phosphate as shown in Table 9.
  • Each concentration of Table 9 represents the concentration of the final formulation obtained by adding water for injection thereto.
  • the chemical stability of each solution was evaluated in the same manners as in the above (1). The results are shown in Table 10.
  • the first compartments were prepared in the same procedures as in Example 1, by fixing the concentration of vancomycin hydrochloride to 0.5 %(w/v) and adjusting the amount of dexamethasone disodium phosphate as shown in Table 11.
  • Each concentration of Table 11 represents the concentration of the final formulation obtained by adding water for injection thereto.
  • the chemical stability of each solution was evaluated in the same manners as in the above (1). The results are shown in Table 12.
  • the concentration of vancomycin hydrochloride was not less than 1.0 %(w/v)
  • the amount of degradation products was reduced at the time when the concentration of dexamethasone disodium phosphate was increased up to 0.1 %(w/v).
  • the resulting solution did not meet the acceptable criterion for degradation products.
  • the addition of dexamethasone disodium phosphate in the specific range significantly reduces the degradation product formation of vancomycin hydrochloride.
  • the acceptable criteria for degradation products of vancomycin and dexamethasone are 20.0 % and 2.0 %, respectively.
  • Example 4 Evaluation of a stabilizing agent (glycerin)
  • the first compartment and the second compartment were prepared in the same procedures as in Example 1, except for changing the concentration of glycerin according to Table 13.
  • Each reconstitution time i.e., time required for reconstituting to a solution by mixing the first compartment and the second compartment
  • the results are shown in Table 13.
  • the concentrations of vancomycin hydrochloride and dexamethasone disodium phosphate were fixed to 1.0 %(w/v) and 0.1 %(w/v), respectively, as in Table 14; and then irritancy according to the concentration of glycerin was evaluated. Each concentration represents the concentration in water for injection.
  • vancomycin hydrochloride and dexamethasone disodium phosphate were dissolved in glycerin (i.e., without using water for injection), in the concentrations of 1.0 %(w/v) and 0.1 %(w/v), respectively.
  • the irritancy was evaluated using beagle dog's eyes.
  • glycerin increased the eye irritancy. Especially, when the concentration of glycerin is more than 20 %(w/v), the irritancy was sharply increased. Therefore, from the above results, it can be seen that the suitable concentration of glycerin is not more than 20 %(w/v).

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Abstract

The present invention provides a pharmaceutical composition for topical administration, comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt in a specific weight ratio. The pharmaceutical composition of the present invention may be formulated into a reconstitutable formulation form, which provides rapid reconstitution, thereby being able to obtain a transparent solution without precipitation and/or gelation. And also, the reconstituted solution does not form precipitation and/or gelation even at room temperature for long duration (e.g., about 1 month) and shows minimized degradation products, thereby providing excellent physical and chemical stability.

Description

PHARMACEUTICAL COMPOSITION FOR TOPICAL ADMINISTRATION COMPRISING VANCOMYCIN OR ITS SALT AND DEXAMETHASONE PHOSPHATE OR ITS SALT
The present invention relates to a pharmaceutical composition for topical administration comprising vancomycin or its salt and dexamethasone phosphate or its salt.
Vancomycin is an antibiotic useful for treating an infection by methicillin-resistant strains including methicillin-resistant Staphylococcus epidemidis. Vancomycin is commercially available as a lyophilized injection or a frozen Ringer's solution, in order to ensure the stability thereof. The lyophilized injection, which is administered by dissolving in water for injection, saline, etc., should be used within 96 hours under the cold condition. The frozen Ringer's solution requires frozen storage at -20℃. Dexamethasone phosphate is a corticosteroid having potent anti-inflammatory activity. Especially, dexamethasone phosphate is useful for treating allergic diseases, skin disorders, inflammatory eye disease, and otitis externa/otitis media.
It has been reported that a combination therapy of an antibiotic and a steroid provides therapeutic improvement, in various researches (Baum JL, et al., Am J Ophthalmol 1974;80:513-7; Barza M. et al., Infect Dis Clin North Am 1989;3:533-49; Schulman JA, et al., Retina 1992; 12:336-40; Meredith TA, et al., Ophthalmology 1990;108:857-60; Maxwell DP Jr, et al., Ophthalmology 1990;98:1370-5, etc.). In addition, Smith MA et al. have disclosed that the combination therapy of vancomycin and dexamethasone can achieve more excellent therapeutic effect than vancomycin monotherapy, in the treatment of inflammation (Smith MA, et al., J Infect Dis. 1997 Feb;175(2):462-6). Therefore, it is expected that a pharmaceutical composition containing vancomycin and dexamethasone as active ingredients can be used as a formulation for topical administration which is applicable to the eyes, ears, nose, or skin.
Meanwhile, in order to design a pharmaceutical formulation for topical administration comprising both vancomycin and dexamethasone, the formulation requires having physical stability, without precipitation and/or micro-particle formation in an aqueous medium such as water for injection. However, the mixing of vancomycin and dexamethasone in the aqueous medium gives a precipitate, thereby being difficult to ensure physical stability. In the report of Smith MA, et al., vancomycin and dexamethasone were administered by using separate syringes, in order to avoid precipitation.
The present inventors carried out various researches in order to develop a pharmaceutical composition for topical administration comprising vancomycin and dexamethasone, which has excellent stability without forming precipitation and/or micro-particles. The present inventors found that the weight ratio of vancomycin and dexamethasone significantly affects the stability of the resulting formulation. Especially, the present inventors found that, if vancomycin and dexamethasone were formulated into reconstitutable formulation form having two compartments (e.g., a vial or a plastic reservoir) along with using a specific weight ratio thereof, rapid reconstitution is accomplished, thereby being able to obtain a transparent solution without precipitation or gelation. And also, it is found that the reconstituted solution does not form precipitation and/or gelation even at room temperature for long duration (e.g., about 1 month); and shows minimized degradation products, thereby providing excellent physical and chemical stability. These properties provide very excellent convenience, in comparison with conventional vancomycin-containing frozen formulations which require frozen storage at -20℃.
Therefore, it is an object of the present invention to provide a pharmaceutical composition for topical administration comprising vancomycin and dexamethasone phosphate in a specific weight ratio.
In accordance with an aspect of the present invention, there is provided a pharmaceutical composition for topical administration, comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt, wherein (i) when the concentration of vancomycin or its pharmaceutically acceptable salt is not less than 1.0 %(w/v) based on the total composition, a weight ratio of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt is 1 : 0.02 to 0.1; and (ii) when the concentration of vancomycin or its pharmaceutically acceptable salt is less than 1.0 %(w/v) based on the total composition, a weight ratio of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt is 1 : 0.05 to 0.4.
In an embodiment of the present invention, the pharmaceutical composition may have a unit dosage form consisting of a first compartment comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt; and a second compartment comprising water.
In another embodiment of the present invention, the second compartment may further comprise glycerin; and the concentration of glycerin may be not more than 20.0 %(w/v) based on the total composition. And also, the second compartment may further comprise a chelating agent of 0.001 to 0.1 %(w/v) and/or a preservative of 0.001 to 0.18 %(w/v), based on the total composition.
It is found by the present invention that the weight ratio of vancomycin and dexamethasone significantly affects the stability of the resulting formulation. Especially, it is found by the present invention that, if vancomycin and dexamethasone were formulated into reconstitutable formulation form having two compartments (e.g., a vial or a plastic reservoir) along with using a specific weight ratio thereof, rapid reconstitution is accomplished, thereby being able to obtain a transparent solution without precipitation or gelation. And also, it is found by the present invention that the reconstituted solution does not form precipitation and/or gelation even at room temperature for long duration (e.g., about 1 month); and shows minimized degradation products, thereby providing excellent physical and chemical stability. Therefore, the pharmaceutical composition according to the present invention can be used not only in a single administration, but also in multiple administrations for long duration along with being stored at room temperature (about 25℃).
The present invention provides a pharmaceutical composition for topical administration, comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt, wherein (i) when the concentration of vancomycin or its pharmaceutically acceptable salt is not less than 1.0 %(w/v) based on the total composition, a weight ratio of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt is 1 : 0.02 to 0.1; and (ii) when the concentration of vancomycin or its pharmaceutically acceptable salt is less than 1.0 %(w/v) based on the total composition, a weight ratio of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt is 1 : 0.05 to 0.4.
It is found by the present invention that the weight ratio of vancomycin and dexamethasone significantly affects the stability of the resulting formulation. That is, when vancomycin and dexamethasone are used in the above specific weight ratio, there is no precipitation and/or gelation in an aqueous medium. The pharmaceutical composition according to the present invention may be applied to the eye, ear, nose, skin, etc.; preferably formulated into an otic formulation form.
In the pharmaceutical composition according to the present invention, the pharmaceutically acceptable salt of vancomycin may be a conventional acid addition salt, including vancomycin hydrochloride, vancomycin sulfate, etc. Preferably, the pharmaceutically acceptable salt of vancomycin may be vancomycin hydrochloride. The concentration of vancomycin or its pharmaceutically acceptable salt may be a therapeutically effective amount range, preferably 0.3 to 4.0 %(w/v) based on the total composition.
And also, the pharmaceutically acceptable salt of dexamethasone phosphate may be a conventional metal salt, including dexamethasone monosodium phosphate, dexamethasone disodium phosphate, etc. Preferably, the pharmaceutically acceptable salt of dexamethasone phosphate may be dexamethasone disodium phosphate. Dexamethasone phosphate or its pharmaceutically acceptable salt may be used in a therapeutically effective amount, within the above weight ratio. For example, when the concentration of vancomycin or its pharmaceutically acceptable salt is not less than 1.0 %(w/v), dexamethasone phosphate or its pharmaceutically acceptable salt may be used in a concentration of 0.02 to 0.4 %(w/v); and when the concentration of vancomycin or its pharmaceutically acceptable salt is less than 1.0 %(w/v), dexamethasone phosphate or its pharmaceutically acceptable salt may be used in a concentration of 0.025 to 0.2 %(w/v). Of course, the concentration of dexamethasone phosphate or its pharmaceutically acceptable salt is determined within the above weight ratio.
It is found by the present invention that, if vancomycin and dexamethasone were formulated into reconstitutable formulation form having two compartments along with using the specific weight ratio thereof as mentioned in the above, rapid reconstitution is accomplished, thereby being able to obtain a transparent solution without precipitation or gelation. And also, it is found by the present invention that the reconstituted solution does not form precipitation and/or gelation even at room temperature for long duration (e.g., about 1 month); and shows minimized degradation products, thereby providing excellent physical and chemical stability. Therefore, in an embodiment of the present invention, the pharmaceutical composition may have a unit dosage form consisting of a first compartment comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt; and a second compartment comprising water (for example, water for injection).
The first compartment or the second compartment may be in a vial form or a plastic reservoir form.
The first compartment may comprise a simple mixture of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt. And also, in order to accurately adjust the amounts of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt, the first compartment may comprise a lyophilized product thereof. That is, the first compartment may comprise a solid obtained by lyophilizing an aqueous solution comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt.
The second compartment may further comprise glycerin as a stabilizing agent, in addition to water (for example, water for injection). Glycerin is a non-aqueous solvent which can be used in the ear, eye, or nasal mucosa. The concentration of glycerin may be not more than 20.0 %(w/v), preferably 0.5 to 10 %(w/v), based on the total composition, in terms of chemical stability and irritancy.
And also, The second compartment may further comprise a chelating agent of 0.001 to 0.1 %(w/v) and/or a preservative of 0.001 to 0.18 %(w/v), based on the total composition. The chelating agent may be an edetate salt [for example, disodium edetate (including its hydrate), trisodium edetate (including its hydrate), tetrasodium edetate (including its hydrate), etc.] or diethyleneamine pentaacetate, but not limited thereto. The preservative may be one or more selected from methylparaben, ethylparaben, propylparaben (including isopropylparaben), isobutylparaben, etc.
In an embodiment of the present invention, there is provided a pharmaceutical composition for topical administration consisting of 0.3 %(w/v) of vancomycin hydrochloride, 0.1 %(w/v) of dexamethasone disodium phosphate, 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection. Preferably, there is provided a pharmaceutical composition for topical administration consisting of a vial comprising 0.3 %(w/v) of vancomycin hydrochloride and 0.1 %(w/v) of dexamethasone disodium phosphate; and a plastic reservoir comprising 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
In another embodiment of the present invention, there is provided a pharmaceutical composition for topical administration consisting of 1.0 %(w/v) of vancomycin hydrochloride, 0.1 %(w/v) of dexamethasone disodium phosphate, 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection. Preferably, there is provided a pharmaceutical composition for topical administration consisting of a vial comprising 1.0 %(w/v) of vancomycin hydrochloride and 0.1 %(w/v) of dexamethasone disodium phosphate; and a plastic reservoir comprising 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
In still another embodiment of the present invention, there is provided a pharmaceutical composition for topical administration consisting of 2.0 %(w/v) of vancomycin hydrochloride, 0.1 %(w/v) of dexamethasone disodium phosphate, 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection. Preferably, there is provided a pharmaceutical composition for topical administration consisting of a vial comprising 2.0 %(w/v) of vancomycin hydrochloride and 0.1 %(w/v) of dexamethasone disodium phosphate; and a plastic reservoir comprising 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
In still another embodiment of the present invention, there is provided a pharmaceutical composition for topical administration consisting of 3.0 %(w/v) of vancomycin hydrochloride, 0.1 %(w/v) of dexamethasone disodium phosphate, 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection. Preferably, there is provided a pharmaceutical composition for topical administration consisting of a vial comprising 3.0 %(w/v) of vancomycin hydrochloride and 0.1 %(w/v) of dexamethasone disodium phosphate; and a plastic reservoir comprising 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
The present invention will be described in further detail with reference to the following examples. These examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Example 1: Preparation of pharmaceutical compositions
Pharmaceutical compositions comprising vancomycin hydrochloride and dexamethasone disodium phosphate were prepared according to the components and amounts shown in Table 1. The amounts of Table 1 represent in the amount based on the solution obtained by mixing the first compartment and the second compartment [%(w/v)],.
Table 1
Compartment Component Amount
First compartment Vancomycin hydrochloride 1.0 %(w/v)
Dexamethasone disodium phosphate 0.1 %(w/v)
Second compartment Glycerin 2.25 %(w/v)
Disodium edetate dihydrate 0.01 %(w/v)
Methylparaben 0.026 %(w/v)
Propylparaben 0.014 %(w/v)
Water for injection q.s.
< Preparation of a first compartment >
Vancomycin hydrochloride was completely dissolved in water for injection (900 mL). While stirring the resulting solution, dexamethasone disodium phosphate was added thereto and then completely dissolved. After the volume of the solution was adjusted to 1,000 mL with water for injection, the solution was stirred for about 30 minutes. The resulting solution was subject to sterile filtration, decanted into sterilized vials, and then lyophilized. Each vial was sealed with a rubber stopper.
< Preparation of a second compartment >
Water for injection (900 mL) was heated to about 90℃ and then propylparaben and methylparaben were dissolved therein. The resulting solution was cooled to room temperature and then disodium edetate dihydrate and glycerin were dissolved therein. After the volume of the solution was adjusted to 1,000 mL with water for injection, the solution was stirred for about 30 minutes. The resulting solution was subject to sterile filtration, decanted into sterilized plastic reservoirs, each of which was then closed with a sterilized sealing cap.
Example 2: Evaluation of Physical Stability
Vancomycin hydrochloride was dissolved in water for injection in predetermined concentrations shown in Table 2. While stirring the resulting solution, dexamethasone disodium phosphate was added thereto in various concentrations (see Table 2) and then any precipitation was observed with naked eyes. The results are shown in Table 2. In Table 2, the term 'Vancomycin' refers to vancomycin hydrochloride; and the term 'Dex' refers to dexamethasone disodium phosphate. And also, '%' means %(w/v); 'O' means a transparent solution; and 'X' means precipitation-occurrence.
Table 2
A B C D E F G H I J K
Vancomycin 0.1% O O O O O O O O O O O
Concentration of Dex (%) 0.0 0.002 0.005 0.01 0.02 0.05 0.07 0.1 0.5 4.0 8.0
Vancomycin 0.3% O O O O O O O O O O O
Concentration of Dex (%) 0.0 0.001 0.01 0.03 0.05 0.07 0.1 0.2 1.0 4.0 8.0
Vancomycin 0.5% O O O O O O O X X - -
Concentration of Dex (%) 0.01 0.02 0.03 0.04 0.05 0.07 0.2 0.3 1.0 4.0 8.0
Vancomycin 1.0% O O O O O X X X - - -
Concentration of Dex (%) 0.01 0.02 0.07 0.09 0.12 0.15 0.4 1.0 3.0 5.0 9.0
Vancomycin 2.0% O O O O X X X X - - -
Concentration of Dex (%) 0.05 0.09 0.15 0.2 0.28 0.4 0.8 1.5 4.0 6.0 10.0
Vancomycin 3.0% O O O O X X X X - - -
Concentration of Dex (%) 0.05 0.25 0.3 0.32 0.4 0.5 1.0 2.0 6.0 10.0 -
Vancomycin 4.0% O O O X X X X X - - -
Concentration of Dex (%) 0.1 0.32 0.4 0.5 0.6 1.0 1.5 3.3 7.0 - -
Vancomycin 5.0% O O X X X X X - - - -
Concentration of Dex (%) 0.2 0.4 0.5 0.6 1.0 1.5 2.0 5.0 8.0
Vancomycin 10.0% O O X X X X X - - - -
Concentration of Dex (%) 0.4 0.8 1.0 1.5 2.0 3.0 4.0 8.0 10.0 - -
Vancomycin 15.0% O X X X X X - - - - -
Concentration of Dex (%) 0.6 1.2 1.3 5.0 8.0 10.0 - - - - -
As shown in Table 2, when the concentration of vancomycin hydrochloride was not less than 0.5 %(w/v), precipitation occurred according to the concentrations of dexamethasone disodium phosphate. And also, it can be seen that, if the concentration of vancomycin hydrochloride is less than about 4.0 %(w/v), for example 1.0 to 4.0 %(w/v) (which is a therapeutically effective concentration range of vancomycin hydrochloride), physical stability is obtainable at the time when the weight ratio of vancomycin hydrochloride and dexamethasone disodium phosphate is in the range of 1 : 0.02 to 0.1. In addition, it can be seen that, if the concentration of vancomycin hydrochloride is less than 1.0 %(w/v), physical stability is obtainable at the time when the weight ratio of vancomycin hydrochloride and dexamethasone disodium phosphate is in the range of 1 : 0.05 to 0.4.
Example 3: Evaluation of Chemical Stability
(1) Evaluation of Chemical Stability
[Concentration of vancomycin hydrochloride: 1.0 %(w/v)]
The first compartments were prepared in the same procedures as in Example 1, by fixing the concentration of vancomycin hydrochloride to 1.0 %(w/v) and adjusting the amount of dexamethasone disodium phosphate as shown in Table 3. Each resulting first compartment was dissolved in water for injection. Each concentration of Table 3 represents the concentration of the final formulation obtained by adding water for injection thereto. The initial amount of degradation products in each solution was measured; and then the amount thereof was also measured after storing at room temperature (25 ℃) for 1 month. The results are shown in Table 4.
Table 3
Component [%(w/v)]
1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10
Vancomycin hydrochloride 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Dexamethasone disodium phosphate 0.0 0.02 0.05 0.075 0.1 0.15 0.2 0.4 1.0 2.0
Table 4
1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10
Appearance Transparent Transparent Transparent Transparent Transparent Precipitated Precipitated Precipitated Precipitated Precipitated
Degradation products of vancomycin (initial) 6.47% 6.53% 6.50% 6.55% 6.49% 6.34% 6.47% 6.61% 7.73% 7.66%
Degradation products of dexamethasone (initial) 0.0% 0.53% 0.56% 0.63% 0.61% 0.58% 0.60% 0.60% 0.60% 0.61%
Degradation products of vancomycin(25℃, 1 month) 20.53% 19.98% 19.00% 17.43% 16.85% 17.42% 18.32% 19.54% 23.24% 4.06%
Degradation products of dexamethasone (25℃, 1 month) 0.0% 1.99% 1.05% 1.00% 0.96% 0.87% 1.07% 0.86% 0.71% 0.56%
(2) Evaluation of Chemical Stability
[Concentration of vancomycin hydrochloride: 2.5 %(w/v)]
The first compartments were prepared in the same procedures as in Example 1, by fixing the concentration of vancomycin hydrochloride to 2.5 %(w/v) and adjusting the amount of dexamethasone disodium phosphate as shown in Table 5. Each concentration of Table 5 represents the concentration of the final formulation obtained by adding water for injection thereto. The chemical stability of each solution was evaluated in the same manners as in the above (1). The results are shown in Table 6.
Table 5
Component [%(w/v)]
2-1 2-2 2-3 2-4 2-5 2-6
Vancomycin hydrochloride 2.5 2.5 2.5 2.5 2.5 2.5
Dexamethasone disodium phosphate 0.0 0.1 0.2 0.25 0.3 0.4
Table 6
2-1 2-2 2-3 2-4 2-5 2-6
Appearance Transparent Transparent Transparent Transparent Precipitated Precipitated
Degradation products of vancomycin (initial) 6.85% 6.63% 6.57% 6.74% 6.51% 6.71%
Degradation products of dexamethasone (initial) - - 0.65% 0.71% 0.64% 0.64%
Degradation products of vancomycin (25℃, 1 month) 21.61% 17.32% 15.28% 16.83% 17.33% 16.36%
Degradation products of dexamethasone (25℃, 1 month) - 1.06% 1.04% 0.96% 0.94% 0.90%
(3) Evaluation of Chemical Stability
[Concentration of vancomycin hydrochloride: 4.0 %(w/v)]
The first compartments were prepared in the same procedures as in Example 1, by fixing the concentration of vancomycin hydrochloride to 4.0 %(w/v) and adjusting the amount of dexamethasone disodium phosphate as shown in Table 7. Each concentration of Table 7 represents the concentration of the final formulation obtained by adding water for injection thereto. The chemical stability of each solution was evaluated in the same manners as in the above (1). The results are shown in Table 8.
Table 7
Component [%(w/v)]
3-1 3-2 3-3 3-4 3-5
Vancomycin hydrochloride 4.0 4.0 4.0 4.0 4.0
Dexamethasone disodium phosphate 0.0 0.1 0.3 0.4 0.5
Table 8
3-1 3-2 3-3 3-4 3-5
Appearance Transparent Transparent Transparent Transparent Precipitated
Degradation products of vancomycin (initial) 6.50% 6.51% 6.46% 6.36% 6.39%
Degradation products of dexamethasone (initial) - 0.70% 0.66% 0.68% 0.62%
Degradation products of vancomycin (25℃, 1 month) 20.62% 16.59% 15.45% 15.46% 16.52%
Degradation products of dexamethasone (25℃, 1 month) - 1.05% 1.03% 1.01% 1.09%
(4) Evaluation of Chemical Stability
[Concentration of vancomycin hydrochloride: 0.3 %(w/v)]
The first compartments were prepared in the same procedures as in Example 1, by fixing the concentration of vancomycin hydrochloride to 0.3 %(w/v) and adjusting the amount of dexamethasone disodium phosphate as shown in Table 9. Each concentration of Table 9 represents the concentration of the final formulation obtained by adding water for injection thereto. The chemical stability of each solution was evaluated in the same manners as in the above (1). The results are shown in Table 10.
Table 9
Component [%(w/v)]
4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-8
Vancomycin hydrochloride 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
Dexamethasone disodium phosphate 0.0 0.005 0.01 0.02 0.05 0.075 0.1 0.3
Table 10
4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-8
Appearance Transparent Transparent Transparent Transparent Transparent Transparent Transparent Transparent
Degradation products of vancomycin (initial) 6.85% 6.63% 6.57% 6.74% 6.51% 6.71% 6.77% 7.82%
Degradation products of dexamethasone (initial) - - 0.65% 0.71% 0.64% 0.64% 0.60% 0.62%
Degradation products of vancomycin(25℃, 1 month) 21.61% 21.21% 20.00% 17.72% 18.32% 18.89% 19.94% 23.61%
Degradation products of dexamethasone (25℃, 1 month) - 1.27% - 1.11% 0.87% - 1.84% 1.80%
(5) Evaluation of Chemical Stability
[Concentration of vancomycin hydrochloride: 0.5 %(w/v)]
The first compartments were prepared in the same procedures as in Example 1, by fixing the concentration of vancomycin hydrochloride to 0.5 %(w/v) and adjusting the amount of dexamethasone disodium phosphate as shown in Table 11. Each concentration of Table 11 represents the concentration of the final formulation obtained by adding water for injection thereto. The chemical stability of each solution was evaluated in the same manners as in the above (1). The results are shown in Table 12.
Table 11
Component [%(w/v)]
5-1 5-2 5-3 5-4 5-5 5-6 5-7 5-8 5-9
Vancomycin hydrochloride 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Dexamethasone disodium phosphate 0.0 0.01 0.025 0.05 0.1 0.15 0.3 0.5 1.0
Table 12
5-1 5-2 5-3 5-4 5-5 5-6 5-7 5-8 5-9
Appearance Transparent Transparent Transparent Transparent Transparent Transparent Precipitated Precipitated Precipitated
Degradation products of vancomycin (initial) 7.72% 6.59% 6.59% 6.77% 6.66% 6.67% 7.52% 7.80% -
Degradation products of dexamethasone (initial) - 0.78% 0.65% 0.62% 0.62% 0.61% 0.60% 0.61% -
Degradation products of vancomycin(25℃, 1 month) 21.40% 20.69% 19.06% 16.68% 18.23% 19.55% 22.04% 23.33% -
Degradation products of dexamethasone (25℃, 1 month) - 1.41% 1.08% 0.97% 0.82% 0.89% 0.68% 0.64% -
As shown in Tables 4, 6, and 8, if the concentration of vancomycin hydrochloride was not less than 1.0 %(w/v), the amount of degradation products was reduced at the time when the concentration of dexamethasone disodium phosphate was increased up to 0.1 %(w/v). Especially, when only vancomycin hydrochloride was used, the resulting solution did not meet the acceptable criterion for degradation products. However, it is very interesting that the addition of dexamethasone disodium phosphate in the specific range significantly reduces the degradation product formation of vancomycin hydrochloride. The acceptable criteria for degradation products of vancomycin and dexamethasone are 20.0 % and 2.0 %, respectively. Therefore, from the above results, when the concentration of vancomycin hydrochloride is not less than 1.0 %(w/v), it is suitable in terms of physical and chemical stability that the weight ratio of vancomycin hydrochloride and dexamethasone disodium phosphate is 1: 0.02 to 0.1.
In addition, as shown in Tables 10 and 12, the increase in the concentration of dexamethasone disodium phosphate up to the specific range significantly reduces the degradation product formation of vancomycin hydrochloride. From the above results, when the concentration of vancomycin hydrochloride is less than 1.0 %(w/v), it is suitable in terms of physical and chemical stability that the weight ratio of vancomycin hydrochloride and dexamethasone disodium phosphate is 1: 0.05 to 0.4.
Example 4: Evaluation of a stabilizing agent (glycerin)
(1) Evaluation of efficacy of a stabilizing agent and reconstitution
The first compartment and the second compartment were prepared in the same procedures as in Example 1, except for changing the concentration of glycerin according to Table 13. Each reconstitution time (i.e., time required for reconstituting to a solution by mixing the first compartment and the second compartment) was measured; and then the amount of degradation products of each solution was measured. The results are shown in Table 13.
Table 13
Component A%(w/v) B%(w/v) C%(w/v) D%(w/v) E%(w/v) F%(w/v) G%(w/v)
First compartment Vancomycin hydrochloride 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Dexamethasone disodium phosphate 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Second compartment Glycerin - 0.3 1.0 3.0 10.0 20.0 50.0
Disodium edetate dihydrate 0.01 0.01 0.01 0.01 0.01 0.01 0.01
Methylparaben 0.026 0.026 0.026 0.026 0.026 0.026 0.026
Propylparaben 0.014 0.014 0.014 0.014 0.014 0.014 0.014
Water for injection q.s. q.s. q.s. q.s. q.s. q.s. q.s.
Reconstitution time (second) 3.5 3.5 3.6 3.8 4.0 4.6 >60
Degradation products of vancomycin (initial) 8.19% 7.87% 7.92% 7.93% 8.10% 8.11% 8.10%
Degradation products of vancomycin (room temperature, 28 days) 17.98% 17.69% 17.54% 17.25% 16.85% 16.83% 16.78%
As shown in Table 13, the chemical stability was enhanced with increasing the concentration of glycerin (A to F). However, when the concentration of glycerin is more than 20 %(w/v), the reconstitution time was remarkably increased, while chemical stability is not significantly affected.
(2) Evaluation of irritancy
The concentrations of vancomycin hydrochloride and dexamethasone disodium phosphate were fixed to 1.0 %(w/v) and 0.1 %(w/v), respectively, as in Table 14; and then irritancy according to the concentration of glycerin was evaluated. Each concentration represents the concentration in water for injection. In case of G8, vancomycin hydrochloride and dexamethasone disodium phosphate were dissolved in glycerin (i.e., without using water for injection), in the concentrations of 1.0 %(w/v) and 0.1 %(w/v), respectively. The irritancy was evaluated using beagle dog's eyes. Each test group has 3 beagle dogs (i.e., n=3); 0.1 mL of each test sample was administered in left eye and right eye, respectively. Water for injection was dropped on the left eye; and the test solution was dropped on the right eye. The eye irritancy was scored based on the blinking frequencies according to eye irritation; therefore the higher score means the higher irritancy. The results are shown in Table 15.
Table 14
Test group Test material
Vancomycin hydrochloride Dexamethasone disodium phosphate Glycerin
G1 1.0% - -
G2 1.0% 0.1% -
G3 1.0% 0.1% 5%
G4 1.0% 0.1% 10%
G5 1.0% 0.1% 20%
G6 1.0% 0.1% 25%
G7 1.0% 0.1% 50%
G8 1.0% 0.1% 100%
G9 - - 20%
G10 - - 25%
Table 15
Test group G1 G2 G3 G4 G5 G6 G7 G8 G9 G10
Left eye 3.3 3.5 3.3 3.8 3.2 4 4 3.6 3.5 3.2
Right eye 5 4 3.6 4.2 4.9 10.9 18 24 4.5 11
Result No irritant No irritant No irritant No irritant No irritant Irritant Irritant Irritant No irritant Irritant
As shown in Table 15, glycerin increased the eye irritancy. Especially, when the concentration of glycerin is more than 20 %(w/v), the irritancy was sharply increased. Therefore, from the above results, it can be seen that the suitable concentration of glycerin is not more than 20 %(w/v).

Claims (21)

  1. A pharmaceutical composition for topical administration, comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt, wherein
    (i) when the concentration of vancomycin or its pharmaceutically acceptable salt is not less than 1.0 %(w/v) based on the total composition, a weight ratio of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt is 1 : 0.02 to 0.1; and
    (ii) when the concentration of vancomycin or its pharmaceutically acceptable salt is less than 1.0 %(w/v) based on the total composition, a weight ratio of vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt is 1 : 0.05 to 0.4.
  2. The pharmaceutical composition for topical administration according to claim 1, wherein the pharmaceutically acceptable salt of vancomycin is vancomycin hydrochloride or vancomycin sulfate.
  3. The pharmaceutical composition for topical administration according to claim 1, wherein the concentration of vancomycin or its pharmaceutically acceptable salt is 0.3 to 4.0 %(w/v) based on the total composition.
  4. The pharmaceutical composition for topical administration according to claim 1, wherein the pharmaceutically acceptable salt of dexamethasone phosphate is dexamethasone disodium phosphate.
  5. The pharmaceutical composition for topical administration according to claim 1, further comprising glycerin.
  6. The pharmaceutical composition for topical administration according to claim 5, wherein the concentration of glycerin is not more than 20.0 %(w/v) based on the total composition.
  7. The pharmaceutical composition for topical administration according to claim 1, further comprising a chelating agent of 0.001 to 0.1 %(w/v) based on the total composition.
  8. The pharmaceutical composition for topical administration according to claim 7, wherein the chelating agent is an edetate salt or diethyleneamine pentaacetate.
  9. The pharmaceutical composition for topical administration according to claim 1, further comprising a preservative of 0.001 to 0.18 %(w/v) based on the total composition.
  10. The pharmaceutical composition for topical administration according to any one of claims 1 to 4, having a unit dosage form consisting of a first compartment comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt; and a second compartment comprising water.
  11. The pharmaceutical composition for topical administration according to claim 10, wherein the first compartment or the second compartment is in a vial form or a plastic reservoir form.
  12. The pharmaceutical composition for topical administration according to claim 10, wherein the first compartment comprises a solid obtained by lyophilizing an aqueous solution comprising vancomycin or its pharmaceutically acceptable salt and dexamethasone phosphate or its pharmaceutically acceptable salt.
  13. The pharmaceutical composition for topical administration according to claim 10, wherein the second compartment further comprises glycerin.
  14. The pharmaceutical composition for topical administration according to claim 13, wherein the concentration of glycerin is not more than 20.0 %(w/v) based on the total composition.
  15. The pharmaceutical composition for topical administration according to claim 10, wherein the second compartment further comprises a chelating agent of 0.001 to 0.1 %(w/v) based on the total composition.
  16. The pharmaceutical composition for topical administration according to claim 15, wherein the chelating agent is an edetate salt or diethyleneamine pentaacetate.
  17. The pharmaceutical composition for topical administration according to claim 10, wherein the second compartment further comprises a preservative of 0.001 to 0.18 %(w/v) based on the total composition.
  18. A pharmaceutical composition for topical administration consisting of 0.3 %(w/v) of vancomycin hydrochloride, 0.1 %(w/v) of dexamethasone disodium phosphate, 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
  19. A pharmaceutical composition for topical administration consisting of 1.0 %(w/v) of vancomycin hydrochloride, 0.1 %(w/v) of dexamethasone disodium phosphate, 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
  20. A pharmaceutical composition for topical administration consisting of 2.0 %(w/v) of vancomycin hydrochloride, 0.1 %(w/v) of dexamethasone disodium phosphate, 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
  21. A pharmaceutical composition for topical administration consisting of 3.0 %(w/v) of vancomycin hydrochloride, 0.1 %(w/v) of dexamethasone disodium phosphate, 2.25 %(w/v) of glycerin, 0.01 %(w/v) of disodium edetate, 0.026 %(w/v) of methylparaben, and 0.014 %(w/v) of propylparaben in water for injection.
PCT/KR2013/006111 2012-07-13 2013-07-10 Pharmaceutical composition for topical administration comprising vancomycin or its salt and dexamethasone phosphate or its salt WO2014010924A1 (en)

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Cited By (10)

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WO2015138983A1 (en) * 2014-03-14 2015-09-17 Cutispharma, Inc. Composition and method for vancomycin oral liquid
JP2017508807A (en) * 2014-03-14 2017-03-30 キューティスファーマ インコーポレーテッドＣｕｔｉｓｐｈａｒｍａ， Ｉｎｃ． Compositions and methods for vancomycin oral liquid
CN106573037A (en) * 2014-03-14 2017-04-19 库蒂斯制药公司 Composition and method for vancomycin oral liquid
US10493028B2 (en) 2014-03-14 2019-12-03 Cutispharma, Inc. Composition and method for vancomycin oral liquid
US10688046B2 (en) 2014-03-14 2020-06-23 Cutispharma, Inc. Composition and method for vancomycin oral liquid
US10959949B2 (en) 2014-03-14 2021-03-30 Azurity Pharmaceuticals, Inc. Composition and method for vancomycin oral liquid
US10959947B2 (en) 2014-03-14 2021-03-30 Azurity Pharmaceuticals, Inc. Composition and method for vancomycin oral liquid
US10959948B2 (en) 2014-03-14 2021-03-30 Azurity Pharmaceuticals, Inc. Composition and method for vancomycin oral liquid
US10959946B2 (en) 2014-03-14 2021-03-30 Azurity Pharmaceuticals, Inc. Composition and method for vancomycin oral liquid
US11638692B2 (en) 2014-03-14 2023-05-02 Azurity Pharmaceuticals, Inc. Composition and method for vancomycin oral liquid

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