Pharmaceutical compositions for controlled release of active...

A - Human Necessities – 61 – K

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

A61K 9/20 (2006.01) A61K 9/22 (2006.01) A61K 9/24 (2006.01)

Patent

CA 2283133

The invention concerns pharmaceutical compositions to be orally administered, for the controlled release of at least one active substance, comprising: a) said at least one active substance; b) between 5 and 60 wt. %, relative to the composition total weight, of at least one vehicle, selected among inert matrices, hydrophile matrices, lipid matrices, mixtures of inert and lipid matrices, mixtures of hydrophile and inert matrices, except mixtures containing a polyacrylic acid and at least a cellulose hydrophile matrix; c) between 5 and 50 wt. %, relative to the composition total weight of at least an alkalizer soluble in an aqueous phase in physiological pH conditions, selected among hydroxides, carbonates, bicarbonates and phosphates of alkaline or alkaline-earth metals, sodium borate and organic basic acid salts. The invention also concerns methods for preparing these compositions, multilayer pharmaceutical compositions containing at least one layer having this composition and methods for preparing such multilayer compositions.

La présente invention concerne des compositions pharmaceutiques administrables par voie orale, permettant la libération contrôlée d'au moins une substance active, comprenant a) au moins ladite substance active, b) entre 5 et 60 % en poids, par rapport au poids total de la composition, d'au moins un excipient, sélectionné parmi les matrices inertes, les matrices hydrophiles, les matrices lipidiques, les mélanges de matrices inertes et de matrices lipidiques, les mélanges de matrices hydrophiles et de matrices inertes, à l'exception des mélanges comprenant un acide polaycrylique et au moins une matrice hydrophile de type cellulosique; c) entre 5 et 50 % en poids, par rapport au poids total de la composition d'au moins un agent alcalinisant soluble dans une phase aqueuse dans des conditions de pH physiologique, sélectionné parmi les hydroxydes, les carbonates, les bicarbonates et les phosphates de métaux alcalins ou alcalino-terreux, le borate de sodium ainsi que les sels basiques d'acides organiques. L'invention concerne aussi des procédés de préparation de ces compositions, des compositions pharmaceutiques multicouches comprenant au moins une couche ayant cette composition et des procédés de préparation de telles compositions multicouches.

LandOfFree

Say what you really think

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

Rating

Pharmaceutical compositions for controlled release of active... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pharmaceutical compositions for controlled release of active..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pharmaceutical compositions for controlled release of active... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1752022

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