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A member asked:

Can antibiotics make my birth control and plan b not work? i took them yesterday i had unprotected sex but im suppose to start antibiotics today

7 doctors weighed in across 2 answers

Yes at times: Some antibiotics interfere with bcp so use of a backup method like condoms is recommended. However, if you took Plan B yesterday and do not start antibiotics till today, there will be no interference as the Plan B is now metabolized.

Dr Loret De Mola agreed

Answered 9/28/2016

5.2k views

Thank
Dr. Heidi Fowler answered

Specializes in Psychiatry

Which antibiotic?: Antibiotics which can affect Plan B: ampicillin, cotrimoxazole (in Bactrim), Rifampin, tetracycline, & clarithromycin

Dr Hegab and 3 doctors agreed

Answered 10/23/2017

553 views

Thank

Related Questions

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Hi, I usually don't get my period on my birth control and I had unprotected sex yesterday but woke up with my period. do I need to get plan b?

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