Agent dispenser comprising a semipermeable wall surrounding sing

Details Agent dispenser comprising a semipermeable wall surrounding sing Agent dispenser comprising a semipermeable wall surrounding sing

1986-12-15

1989-03-21

Rose, Shep K.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Tablets, lozenges, or pills

A61K 922, A61K 924, A61K 926, A61K 944

Patent

active

048141801

ABSTRACT:
A dispenser is disclosed for delivering a beneficial agent to an environment of use. The dispenser comprises a semipermeable wall surrounding a compartment containing a heat responsive composition, and an expandable composition. A passageway in the wall connects the compartment with the exterior of the dispenser.

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