A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 47/16 (2006.01) A61K 9/00 (2006.01) A61K 47/18 (2006.01) A61K 47/20 (2006.01) A61K 47/24 (2006.01) A61K 31/557 (2006.01) A61K 31/5575 (2006.01)
Patent
CA 2316485
The present invention relates to sustained-release pharmaceutical compositions for ionic pharmaceutically active substances (excluding ionic prostanoic acid derivatives) containing ionic compounds having opposite charges to those of the active substances and increasing hydrophobicity of the active substances. More specifically, the invention relates to sustained-release pharmaceutical compositions comprising the ionic pharmaceutically active substances and the ionic compounds having opposite charges to those of the active substances and increasing hydrophobicity of the active substances that contain hydrophobic groups in the molecule thereof. The pharmaceutical composition of the invention can exhibit excellent sustained release effect of the active substance, irrespective of water solubility possessed by the ionic pharmaceutically active substances.
L'invention concerne des compositions médicinales à libération prolongée de substances ioniques médicalement actives renfermant des composés ioniques qui sont chargés de manière opposée aux substances ioniques médicalement actives (à l'exception de dérivés d'acide prostanoïque ionique) et capables d'augmenter les propriétés hydrophobes des substances précitées. De manière plus générale, les composés ioniques précités présentent chacun un groupe hydrophobe dans leur molécule. Ces compositions médicinales peuvent exercer une action efficace et prolongée indépendamment de l'hydrosolubilité des substances ioniques médicalement actives.
Katsuma Masataka
Mitomi Mitsuo
Saito Katsumi
Takagi Akira
Takahashi Yutaka
Astellas Pharma Inc.
Dennison Associates
Yamanouchi Pharmaceutical Co. Ltd.
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