(12) Patent Application Publication (10) Pub. No.: US 2011/0281830 A1 Sulur Et Al
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US 2011 (0281830A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2011/0281830 A1 Sulur et al. (43) Pub. Date: Nov. 17, 2011 (54) NOVEL DERMACEUTICAL CREAM MADE (30) Foreign Application Priority Data USING SODIUM FUSDATE AND STEROIDS Jan. 21, 2009 (IN) ........................... 134/MUMA2009 (75) Inventors: Vanangamudi Subramaniam Publication Classification Sulur,r Chennai (IN);: Madhavan (51) Int. Cl. Srinivasan, Chennai (IN); A 6LX 3/575 (2006.01) Neelakandan Narayanan Chulliel, A6IP3L/00 (2006.01) Chennai (IN); Haridas Sankar, A6IP 29/00 (2006.01) Mumbai (IN). Kausik Ghosh, A6IP 700 (2006.01) Chennai (IN) (52) U.S. Cl. ........................................................ S14/17O (73) Assignee: APEX LABORATORIES (57) ABSTRACT PRIVATE LIMITED, CHENNAI, The invention discloses a dermaceutical cream containing TN (IN) steroids and an antibacterial agent in the form of Fusidic acid, which Fusidic acid is formed in situ from Sodium Fusidate as the starting raw material, wherein Sodium Fusidate is con (21) Appl. No.: 13/144.932 verted into Fusidic acid under oxygen-free environment. The cream of the present invention has greater shelf-life stability (22) PCT Filed: Jan. 20, 2010 and the finer particle size of the API than the conventional creams containing Fusidic acid. The cream of the present (86). PCT No.: PCT/B2O1O/OSO242 invention contains Fusidic acid as the API that has been formed in situ from Sodium Fusidate, and steroids in a cream S371 (c)(1), base comprising an acid, a co-solvent, an emulsifier and a (2), (4) Date: Jul.18, 2011 waxy material along with water, preferably purified water. US 2011/028 1830 A1 Nov. 17, 2011 NOVELDERMACEUTICAL CREAM MADE of ointment rather than cream. Drawbacks of ointments over USING SODIUM FUSDATE AND STEROIDS creams are well known and it's generally preferable to use creams rather than ointments for topical application. FIELD OF INVENTION 0008. Several aspects of Fusidic acid as an API are known: 0009. It is thermolabile 0001. The present invention relates to primary & second 0010. It is available in cream formulations ary bacterial skin infections and inflammations and in par 0011. It can be obtained from Sodium Fusidate by dis ticular it relates to the single dose treatment using a steroids Solving the latter in an aqueous phase and adding acid to cream that also contains an antibacterial agent in the form of the solution, whereby Fusidic acid precipitates. How a Fusidic acid wherein the Fusidic acid has been made using ever, the Fusidic acid precipitate is difficult to process Sodium Fusidate as the starting Active Pharmaceutical Ingre into a cream form first due to its coarse and uneven dient (API). particle size and second retrieving Fusidic acid from wet cake involves drying and further handling which dete BACKGROUND OF THE INVENTION riorates the Fusidic acid due to exposure to oxygen 0002. Use of steroids to alleviate inflammation, irritation 0012. The stability of the API in a Fusidic acid cream is and itching caused by skin ailments is well known. It is also unreliable due to the thermolabile nature of Fusidic acid well known that use of Steroids compromises patient's 0013 Stabilization of medicaments containing Fusidic immune system and exposes them to bacterial infections. acid against oxidation involves observing a number of Strin Single dose therapies containing steroids and antibacterials gent precautionary procedures during manufacture and stor are well known. age. These include: 0003) Numerous single dose treatments, both topical and 0014 replacing Oxygen in pharmaceutical containers systemic, are currently employed for the treatment of above with inert gases such as Nitrogen, Carbon dioxide, skin inflammations. Topical and systemic inflammatory treat Helium and the like ment compositions typically employ a combination of corti 0.015 avoiding contact of the medicament with heavy costeroids in a base component. The active ingredients typi metal ions which catalyze oxidation, cally comprise Corticosteroids Such as steroids like 0016 storing the API at reduced temperatures through Betamethasone Valerate, Fluticasone Propionate, Mometa out its shelf life before processing Sone Furoate, Dexamethasone Acetate, Hydrocortisone 0017. In practice this means stricter controls during the Acetate, Clobetasol Propionate. Beclomethasone Dipropi manufacture as well as storage of such API (storing it typi onate, Betamethasone Dipropionate and the like. cally at 2°C. to 8°C. in air-tight containers throughout their 0004 Numerous treatments, both topical and systemic, shelf life). are available for the primary and secondary skin infection 0018. There is therefore a need to provide a Fusidic acid caused by sensitive Gram-ve organisms such as Staphylo cream in which Fusidic acid will be of greater stability at the coccus aureus, Streptococcus spp etc. Topical and systemic time of the manufacture of the cream, and which will sustain bacterial infection treatment compositions typically employ its stability at an acceptable level throughout its shelf life. at least one active pharmaceutical ingredient (API) in com 0019. There's a need to provide dermaceutical cream con bination with a base component. In the cream form, the APIs taining steroids, and an antibacterial in the form of Fusidic typically comprise an antibiotic/antibacterial Such as Fusidic acid, and in which Fusidic acid will be of greater stability at acid and the like. the time of the manufacture of the cream, and which will 0005. In the currently available Fusidic acid creams, sustain its stability at an acceptable level throughout its shelf Fusidic acid in fine powder form is used as source API. The life. Small particle size enhances its dermal contact by providing a large specific Surface area and penetration, and provides a OBJECTS AND ADVANTAGES OF THE Smooth feel on application to skin. However, a serious short INVENTION coming of the fine size of Fusidic acid particles is that it 0020. It is therefore one object of the present invention to presents an enormous Surface area for contact and reaction provide a cream which contains Fusidic acid as the active API with molecular Oxygen during manufacture, handling, and but which has greater stability of the API throughout its shelf processing of the cream. This has serious implications to its life. chemical stability and results in rapid reduction in potency of the API (Fusidic acid) in the final cream formulation. Degra 0021. It is a further objective of the present invention to dation due to oxidation is a major cause of instability of provide a dermaceutical cream containing at least one steroid, currently available Fusidic acid creams. Table 1 show that the and an antibacterial agent in the form of Fusidic acid, in which degradation in the API samples (Fusidic acid) exposed to Fusidic acid will be of greater stability at the time of the oxygen ranged between 7.7% and 11% for conditions ranging manufacture of the cream, and which will sustain its stability from room temperature to 45° C. when analysed at three at an acceptable level throughout its shelf life. months of exposure period at the above conditions. 0006. It is known that greater the exposure time of Fusidic BRIEF SUMMARY OF THE INVENTION acid as the raw API to Oxygen, greater the limitations on 0022. The invention discloses a dermaceutical cream con stabilising Fusidic acid in a formulation. However, there is no taining steroids Such as Betamethasone Valerate, Fluticasone published data on the stability of Fusidic acid over a period of Propionate, Mometasone Furoate, Dexamethasone Acetate, time. Hydrocortisone Acetate, Clobetasol Propionate, Beclom 0007 As an alternative to Fusidic acid, Sodium Fusidate is ethasone Dipropionate, Betamethasone Dipropionate and the known to have been used to make dermaceutical medica like, and an antibacterial agent in the form of Fusidic acid, ments for topical application. However, these are in the form which Fusidic acid is formed in situ from Sodium Fusidate as US 2011/028 1830 A1 Nov. 17, 2011 the starting raw material, wherein Sodium Fusidate is con verted into Fusidic acid under oxygen-free environment. The TABLE 1-continued cream of the present invention has greater shelf-life stability and the finer particle size of the API than the conventional Results Of3 Months Old Fusidic Acid (API) Analysis By Stability creams containing Fusidic acid. The cream of the present Indicating HPLC Method And Titration Method invention contains Fusidic acid as the API that has been Name of Sample: FUSIDIC ACID BP: formed in situ from Sodium Fusidate, and steroids such as Pack: Open (O) & Closed (C) Petri dish Betamethasone Valerate, Fluticasone Propionate, Mometa Fusicic Acid Percentage Sone Furoate, Dexamethasone Acetate, Hydrocortisone *In- Assay (% Drop (% Acetate, Clobetasol Propionate. Beclomethasone Dipropi onate, Betamethasone Dipropionate and the like in a cream tial Tiltra- Titra base comprising an acid, a co-solvent, an emulsifier and a S. No Conditions (%) tion HPLC tion HPLC Remarks waxy material along with water, preferably purified water. 3 45° C. (O) 98.52 89.52 2.08 11.08 After 3 4 45° C. (C) 99.10 92.12 150 8.48 Months DETAILED DESCRIPTION OF THE INVENTION 0023. We discussed earlier the known aspects of the topi cal preparations that have Fusidic acid and Sodium Fusidate as the APIs. It is evident from the current state of knowledge Stability Analysis of Sodium Fusidate that: 0032 0024 Creams containing Fusidic acid that are made using Sodium Fusidate as starting API are not available. 0025 Creams containing Fusidic acid that are made TABLE 2 using Sodium Fusidate along with steroids such as Results Of3 Months Old Sodium Fusidate (API) Analysis By Betamethasone Valerate, Fluticasone Propionate, Stability Indicating HPLC Method And Titration Method Mometasone Furoate, Dexamethasone Acetate, Hydro Name of the Sample: Sodium Fusidate BP cortisone Acetate, Clobetasol Propionate, Beclometha Pack: Open & Closed Petri dish Sone Dipropionate, Betamethasone Dipropionate and Sodium Fusidate Percentage the like as starting APIs are not available.