Pharmaceutical preparation to be administered orally with controlled release of active substance and method for its manufacture
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United States of America Patent
Stats
-
Dec 5, 1995
Issued Date -
N/A
app pub date -
Apr 29, 1994
filing date -
Apr 16, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Pharmaceutical preparation to be administered orally with controlled release of active substance and method for its manufacture. Pharmaceutical preparation to be administered orally with controlled release of active substance, containing a nucleus which itself consists at least of one pharmacologically active substance, or a nucleus of physiologically safe material which is enveloped by an active substance layer, containing at least one pharmacologically active substance, if needed, a first membrane, then an acid layer consisting at least of a physiologically safe acid and then a compound membrane consisting of a pH sensitive polymer and an insoluble polymer, as well as methods for its manufacture. The pharmaceutical preparation is applicable to all claimed types of medicine and to the therapy of illnesses.
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Family
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