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Does my birth control still work?

I am on birth control pills and i was recently on an antibiotic, i know that they cancell each other out and all but how soon after you finish the antibiotic does the birth cotrol work like its supposed to?

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Asked by newmommy0903 at 7:17 PM on Jan. 23, 2009 in Health

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Answers (4)
  • it should. but it can mess it up. id talk to your gyno just to make sure. some anti biotics can counteract it but some wont.

    Answer by xhellxfirex495 at 7:29 PM on Jan. 23, 2009

  • i think they stay in your system for a couple days. take it easy and be careful for a day or two

    Answer by learae at 8:07 PM on Jan. 23, 2009


    Can antibiotics decrease the effectiveness of birth control pills?

    "The effects of antibiotics on birth control pills may be overstated — except in the case of one antibiotic, rifampin. Studies clearly show that rifampin decreases the effectiveness of birth control pills in preventing ovulation. However, rifampin isn't a widely used antibiotic. Chances are you wouldn't be taking it unless you had tuberculosis or had tested positive for the disease."



    Answer by Anonymous at 8:19 PM on Jan. 23, 2009

  • Continued from above:

    "Hypothetically speaking, other antibiotics, particularly penicillin and tetracycline derivatives, could impair the effectiveness of birth control pills. However, no large studies have proved such an effect.

    Researchers can't rule out the possibility that a small percentage of women may experience decreased effectiveness of birth control pills while taking an antibiotic. And if you're taking a newer, extremely low-dose oral contraceptive, you could be more susceptible to these potential effects from antibiotics. If you're concerned, consider using a barrier method of contraception for the duration of your antibiotic prescription."

    Answer by Anonymous at 8:19 PM on Jan. 23, 2009

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