Pharmaceutical formulations containing anti-inflammatory...

A - Human Necessities – 61 – K

Patent

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A61K 9/107 (2006.01) A61K 9/48 (2006.01)

Patent

CA 2443461

The invention relates to compositions in the form of microemulsion preconcentrates containing: (a) a mixture consisting of a middle-chained triglyceride and an omega 9 fatty acid and/or an omega 6 fatty acid; (b) a surface-active component containing a polyoxyethylene-type surface-active agent; (c) a therapeutic active ingredient which is hardly soluble in water but soluble in component (a) and/or (b) from the category of non-steroidal anti-inflammatory drugs (NSAIDS). Microemulsions are formed when said microemulsions preconcentrates come into contact with water or an aqueous medium, wherein the oil-in-water type microemulsions have an average particle size of less than 150 nm, preferably less than 100 nm. The microemulsion preconcentrates and microemulsions according to the invention are suitable for oral and topical administration of non-steroidal anti-inflammatory drugs.

Compositions sous forme de préconcentrés de microémulsions, qui contiennent (a) un mélange constitué d'un triglycéride à chaîne moyenne et d'un acide gras oméga 9 et / ou d'un acide gras oméga 6, (b) un constituant tensioactif contenant un tensioactif du type polyoxyéthylène, et (c) un principe actif thérapeutique difficilement soluble dans l'eau et pourtant soluble dans le constituant (a) et / ou (b), appartenant à la classe des anti-inflammatoires non-stéroïdiens (NSAID). Au contact de l'eau ou d'un milieu aqueux, ces préconcentrés de microémulsions forment des microémulsions, celles du type huile dans l'eau possédant une grosseur moyenne des particules inférieure à 150 nm, et de préférence inférieure à 100 nm. Les préconcentrés de microémulsions et microémulsions selon la présente invention sont appropriés pour l'administration orale et topique d'anti-inflammatoires non-stéroïdiens.

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