Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Tablets – lozenges – or pills
Patent
1987-03-31
1988-11-22
Rose, Shep K.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Tablets, lozenges, or pills
A61K 924
Patent
active
047865075
ABSTRACT:
This invention relates to a pharmaceutical tablet containing active substance prone to hydrolysis and having a long shelf life which comprises (1) one or more layers free from active substance and (2) a layer containing said active substance in a concentration sufficient to inhibit hydrolysis.
REFERENCES:
Little et al., Tablet Making, 2nd Ed. (1963), pp. 107-111, Drycoating Layer Tablets.
Boehringer Ingelheim KG
Rose Shep K.
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