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A female asked:

if taken for 3 days, how long does macrobid stay in your body and effect birth control (alesse) or emergency contraceptive (taken 7 days later) use ?

1 doctor answer2 doctors weighed in
Dr. Charles Whiting
Obstetrics and Gynecology 27 years experience
Not a factor...: Macrobid won't affect birth control or emergency contraception effectiveness. Best wishes

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Last updated Jan 10, 2016

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