Monday, August 31, 2015

Drug interaction between antibiotics and oral contraceptive

Question: What is the mechanism of drug interaction between antibiotics and oral contraceptives?


Answer: There are several mechanisms of drug interaction between antibiotics and oral contraceptives, depending on the type of antibiotics.

Such as:
Penicillins and Tetracyclines will reduce the absorption of oral contraceptives. By inhibiting bacteria in the intestine that affects an enzyme used in the process of enterohepatic recirculation. And it resulted in decrease in level of oral contraceptives.

Rifampicin is an enzyme inducer. It makes an enzyme in the liver to eliminate estrogenic and progestational component in oral contraceptives from the body faster.

References:

http://www.ncbi.nlm.nih.gov/pubmed/12063491

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