Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Patent
1984-05-25
1987-05-12
Robinson, Allen J.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
A61K 3144
Patent
active
046650814
ABSTRACT:
A new solid nifedipine preparation which comprises (a) a particulate dry composition having been obtained by subjecting nifedipine in mixture with casein and one or more inorganic excipients to co-pulverization or (b) a particulate dry composition having been obtained by adding an enteric high molecular substance and a plasticizer optionally with a higher fatty acid ester to the co-pulverized mixture obtained above, subjecting the mixture to co-pulverization and then dry-processing the co-pulverized product to a pharmaceutically acceptable solid form, as well as a process for preparing the solid nifedipine preparation comprising a particulate dry composition (a) or (b) by the specific co-pulverization and a dry compounding method. The solid nifedipine preparation is excellent in dissolution of nifedipine or possesses a controlled dissolution rate of nifedipine. This preparation is useful as a vasodilating medicament for the dual purposes of rapid and gradual release of nifedipine from the preparation for the remedy of angina pectoris or hypertension.
REFERENCES:
patent: 3862332 (1975-01-01), Barnhart et al.
patent: 4412986 (1983-11-01), Kawata et al.
Doi Kengo
Kusakari Masaki
Nitta Shinichi
Takahashi Nobuhiko
Robinson Allen J.
Takada Seiyaku Kabushiki Kaisha
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