Our expert says:
Worried, antibiotics like Ciprofloxacin, Clarithromycin, Co-trimoxazole and Erythromycin have very little effect on the pill. The risk of break-through bleeding and of pregnancy are very remote to nil, but my advice would be to rather be safe than sorry – take extra precaution for the duration of the treatment.
With antibiotics like Cephalexin, Chloramphenicol, Clindamycin, Metronidazole, Penicillin and Tetracycline the risk of break-through bleeding is high and the risk of falling pregnant is moderate. The best would be to take extra precaution for the duration of the treatment plus 7 days. In the case of long-term treatment extra precaution is only necessary for the first 4 weeks.
If you’re interested in more information on how drugs affect the efficacy of the pill you’re welcome to mail me at CyberDoc@mweb.co.za. Good luck.
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