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A member asked:
If i took plan b yesterday and started antibiotics (biaxin) today, will that reduce the effectiveness of the plan b?
A doctor has provided 1 answer
"Plan B": Some antibiotics can interfere with absorption of oral birth control (Plan B for example), but not enough to reduce the hormonal effect on the uterine lining, which can prevent some pregnancies by inhibition of implantation of a fertilized egg. Plan B is not always effective, however, so if your period is delayed, obtain a serum HCG test to be certain of pregnancy.
Answered 3/15/2018
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