Primary delivery system comprising secondary dosage form

Details Primary delivery system comprising secondary dosage form Primary delivery system comprising secondary dosage form

1987-04-13

1988-09-27

Rosenbaum, C. Fred

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Tablets, lozenges, or pills

424452, 424459, 424473, A61J 300

Patent

active

047739070

ABSTRACT:
A delivery system is disclosed comprising a wall surrounding a lumen containing a plurality of dosage delivery devices. The wall is formed of an environment sensitive material that releases the dosage forms into the environment. The dosage forms comprise a semipermeable wall surrounding a compartment containing drug. A passageway through the semipermeable wall releases drug from the dosage form to the environment.

REFERENCES:
patent: 3786813 (1974-01-01), Michaels
patent: 3917813 (1975-11-01), Pedersen
patent: 4193985 (1980-03-01), Bechgaard et al.
patent: 4263273 (1981-04-01), Applegren et al.
patent: 4324779 (1982-04-01), Dahlhausen et al.
patent: 4326525 (1982-04-01), Swanson et al.
patent: 4339428 (1982-07-01), Tencza

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