Ph-dependent controlled release pharmaceutical opioid...

A - Human Necessities – 61 – K

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

A61K 9/50 (2006.01) A61K 31/485 (2006.01)

Patent

CA 2738078

The invention relates to a pH-dependent controlled release pharmaceutical composition, comprising a core, and an opioid, wherein the core is coated at least by one coating layer, controlling the release of the pharmaceutical composition, wherein the coating layer comprises a polymer mixture of i) 40 95% by weight, based on dry weight of the polymer mixture, of at least one water insoluble essentially neutral vinyl polymer, and ii) 5 60% by weight, based on dry weight of the polymer mixture, of at least one anionic polymer or copolymer, which is insoluble in a buffered medium below pH 4.0 and soluble at least in the range from pH 7.0 to pH 8.0, characterized in that the coating layer further comprises 110 to 250 % by weight of a non-porous inert lubricant, 1 to 35 % by weight of a neutral cellulosic compound and 1 to 25 % by weight of an emulsifier, each calculated on dry weight of the polymer mixture.

La présente invention concerne une composition pharmaceutique à libération contrôlée pH-dépendante, comprenant un noyau, et un opioïde, le noyau étant enrobé au moins par une couche denrobage, contrôlant la libération de la composition pharmaceutique, la couche denrobage comprenant un mélange de polymères de i) de 40 à 95 % en poids, sur la base du poids sec du mélange de polymères, dau moins un polymère de vinyle insoluble dans leau pratiquement neutre, et ii) de 5 à 60 % en poids, sur la base du poids sec du mélange de polymères, dau moins un polymère ou copolymère anionique, qui est insoluble dans un milieu tamponné au-dessous de pH 4,0 et soluble au moins dans la plage de pH 7,0 à pH 8,0, caractérisée en ce que la couche denrobage comprend en outre de 110 à 250 % en poids dun lubrifiant inerte non poreux, de 1 à 35 % en poids dun composé cellulosique neutre et de 1 à 25 % en poids dun émulsifiant, chacun étant calculé sur la base du poids sec du mélange de polymères.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Ph-dependent controlled release pharmaceutical opioid... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ph-dependent controlled release pharmaceutical opioid..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ph-dependent controlled release pharmaceutical opioid... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1375736

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.