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תכשיר רוקחות בעל שחרור מבוקר התלוי ב–ph עבור חומרים שאינם אופיאוידים עם עמידות בפני השפעת אתנול
专利权人:
EVONIK ROHM GMBH
发明人:
申请号:
IL21130511
公开号:
IL211305A
申请日:
2011.02.20
申请国别(地区):
IL
年份:
2015
代理人:
摘要:
The invention relates to a pH-dependent controlled release pharmaceutical composition, comprising at least one pharmaceutical active ingredient, with the exception of opioids, 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 or copolymer, 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 at least one neutral cellulosic compound and 1 to 25% by weight of at least one emulsifier, each calculated on dry weight of the polymer mixture.
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