Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Capsules
Patent
1990-03-14
1992-04-28
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Capsules
424452, 424482, 424499, A61K 948
Patent
active
051087570
ABSTRACT:
The present invention relates to a process for the preparation of regulated release solid pharmaceutical compositions comprising 4-(2'-nitro-phenyl)-2,6-dimethyl-3,5-dimethoxycarbonyl-1,4-dihydro-pyridin e (referred to further on as "nifedipine") as active ingredient which comprises admixing a solution or solutions of 1 part by weight of nifedipine, 0.1-1.5 parts by weight of one or more hydrophilizing agent(s) and 0.05-1.5 parts by weight of one or more retarding agent(s) formed with one or more identical or different solvent(s) completely or partly and applying the solution(s) thus obtained simultaneously or in succession onto an inert carrier, drying and sieving the product thus obtained and subsequently admixing the same with suitable conventional auxiliary agents and compressing the mixture thus obtained to tablets in a known manner and coating the tablets or filling the mixture into capsules.
REFERENCES:
patent: 4673564 (1987-06-01), Kawata
patent: 4828836 (1989-05-01), Elger
patent: 4894235 (1990-01-01), Kohne
patent: 4968508 (1990-11-01), Oren
Barczay Erzsebet
Csorgo Margit
Erdos Sandor
Fekete Marton
Gorgenyi Frigyes
Benston William E.
Egis Gyogyszergyar
Page Thurman K.
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