Is this the final word on antibiotics and contraception?

Study confirms which drugs do and don't affect efficacy

There is no reason for women to employ backup contraception when taking antibiotics unless they are taking rifamycin-like drugs, a systematic review of 29 studies confirms.

oral contraceptives and other pills

Results from the study show concomitant antibiotic use (including penicillins, cephalosporins, quinolones, tetracyclines, macrolides, trimethoprim sulfamethoxazole, metronidazole, dapsone, and isoniazid/streptomycin) was not associated with changes in pregnancy rates or ovulation.

There was also little