Metronidazole-based dermatological foam and emulsions for...

A - Human Necessities – 61 – K

Patent

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Details

A61K 9/12 (2006.01) A61K 9/107 (2006.01) A61K 31/40 (2006.01) A61P 17/00 (2006.01)

Patent

CA 2619474

The invention relates to emulsions comprising the following components expressed in mass percentage with respect to the total mass of the composition thereof: (a) 72-76 mass % water, (b) 0.1-5 mass % gelling agent of the emulsion aqueous phase, (c) 0.75-2 mass % metronidazole, (d) 5-10 mass % mineral oil, (e) 0.5-10 mass % surfactant agent, (f) 0.5-5 mass % fatty acid, (g) 0-4 mass % metronidazole (c) absorption promoter and (h) 0.1-5 mass % preservative agent selected from a group consisting of methylparabene, propylparabene, phenoxyethanol and the mixture thereof. A metronidazole-based foams obtainable from said emulsions and the use thereof are also disclosed.

La présente invention concerne des émulsions comprenant, en pourcentage en masse par rapport à la masse totale de la composition : (a) 72% à 76% d'eau ; (b) 0,1% à 5% d'un agent gélifiant de la phase aqueuse de l~émulsion ; (c) 0,75% à 2% de métronidazole ; (d) 5% à 10% d'huile minérale ; (e) 0,5% à 10% d'un agent tensioactif ; (f) 0,5% à 5% d'un acide gras ; (g) 0% à 4% d'un promoteur d'absorption du métronidazole (c) ; et (h) 0,1% à 5% d'un agent conservateur choisi parmi le groupe constitué par le méthylparabène, le propylparabène, le phénoxyéthanol et leurs mélanges. L'invention concerne également des mousses à base de métronidazole obtenues à partir de ces émulsions, ainsi que leur utilisation dermatologique.

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