Multivesicular emulsion topical delivery systems

A - Human Necessities – 61 – K

Patent

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Details

A61K 47/18 (2006.01) A61K 8/41 (2006.01) A61K 8/68 (2006.01) A61K 9/107 (2006.01) A61Q 17/04 (2006.01) A61Q 19/00 (2006.01) A61Q 19/04 (2006.01) A61Q 19/10 (2006.01) A61K 47/44 (2006.01)

Patent

CA 2457852

A topical delivery composition which employs a multivesicular emulsion in combination with a pharmaceutically/pharmacologically active agent is disclosed. The multivesicular emulsion is formed from a quaternary amine salt emulsifier such as behentrimonium methosulfate. The emulsion is multi-lamellar which is a series of concentric spheres or vesiculars of oil and water phase that can be seen microscopically. As a result, the active is time released over a sustained period rather than spike released as is common with most topicals.

L'invention concerne une composition administrée par voie topique composée d'une émulsion multivésiculaire combinée à un agent actif au plan pharmaceutique/pharmacologique. Ladite émulsion multivésiculaire est formée à partir d'un émulsifieur de sel d'amine quaternaire, tel qu'un méthosulfate de béhentrimonium. Ladite émulsion se présente sous une forme multi-lamellaire, c'est à dire qu'elle se compose d'une série de sphères concentriques ou de vésicules de phases huileuse et aqueuse qui sont visibles au microscope. Ainsi, le produit actif est libéré de manière différée sur une période prolongée plutôt qu'il le soit par pointes comme c'est souvent le cas avec la plupart des médicaments topiques.

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