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PubMed1964

EFFECT OF DOSAGE FORM PROPERTIES ON THERAPEUTIC EFFICACY OF TOLBUTAMIDE TABLETS.

The rate of gastrointestinal absorption and the physiologic availability of tolbutamide are functions of the dissolution rate of the drug in gastrointestinal fluids. This property can be modified markedly by pharmaceutical formulation factors. The in vitro dissolution rates of clinically efficacious and clinically inefficacious tolbutamide tablets have been determined, and it has been found that the former dissolved considerably more rapidly than the latter. Once diabetic patients have been "titrated" with a particular brand of tolbutamide they should not be switched to a different brand without "retitration." There is need to establish an adequate in vitro test to assure the physiologic availability of tolbutamide from commercial tablets.

Absorption↗