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A member asked:

Can amoxicillin (antibiotic) make birth control less effective?

A doctor has provided 1 answer

Yes: Any antibiotic can make birth control less effective, since the antibiotics can kill off some of the "good" bacteria in the gut that are needed to process the birth control hormones. Backup methods are important while on antibiotics.

Answered 4/1/2014

4.3k views

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Related Questions

A member asked:

Im on combination Tri Sprintec Lo birth control and on Amoxicillin 875 mg right now. My period is over but Im spotting while on active pills. Can the antibiotic cause this? It has a label on the bottle about effectiveness

A doctor has provided 1 answer

A member asked:

Taking a generic amoxicillin for almost 2 weeks after a tooth extraction. I am on birth control pills. Havent had any spotting until today. Read many sources saying antibiotics do not affect birth control pills. Is the spotting a sign of ovulation?

A doctor has provided 1 answer

A member asked:

Hi, can i get pregnant while taking antibiotics amoxicillin for 3 days and only 3 days for me to get my period, i don't take birth control pill.

A doctor has provided 1 answer

A member asked:

I stopped taking antibiotics (amoxicillin) 7 days ago. I take birth control pills to prevent pregnancy. Am I "safe" to have sex now without worrying?

A doctor has provided 1 answer

A member asked:

How long after you take an antibiotic , such as amoxicilin , can you have unprotected sex again? (on birth control).

4 doctors weighed in across 3 answers

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