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A member asked:

I read articles about bactrim (sulfamethoxazole and trimethoprim) not interfering with ocs effectiveness unlike other antibiotics. is this a common conception?

A doctor has provided 1 answer
Dr. David Krulak answered

Specializes in Family Medicine

Bactrim (sulfamethoxazole and trimethoprim): This medication may actually increase plasma levels of ethinyl estradiol, the medicine found in many forms of birth control.

Answered 7/12/2014

3.9k views

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