A member asked:

Does colonoscopy interfere with birth control pill effectiveness? especially the prep laxative that cleans your colon

A doctor has provided 1 answer

Likely to interfere: I am not sure any studies have been done to actually confirm the effect of bowel prep on BCP, but anything that significantly alters the diet or digestion, including antibiotics, have been known to interfere with absorption of the pill. Other variables include the timing of the cycle, etc. I recommend back up protection for the remainder of the month.

Answered 7/26/2018

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Thank

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