Which birth controls does INH effect?!
Question: Which birth controls does INH effect?
Answers:
Best Answer - Chosen by Voters
Isoniazid reduces the efficacy of cytochrome P450, thereby making the liver less effective in metabolizing oral contraceptives.
In other words, Isoniazid specifically makes your birth control more effective. Antibiotics generally are thought to make birth control less effective - Isoniazid is an outlier.
How long will you be taking Isoniazid? You might want to consider not taking your birth control pills, and using a condom or abstaining from intercourse, during the duration of your treatment. You should also consider seeing your OB-GYN for questions.
Myself - Senior medical student