Antibiotics & Mirena IUD
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An_248776 posted:
I have had the iud for Ab 4yrs now and I was wondering if I have been taking 1000mg of antibiotics daily for 4days and was sexually active with my boyfriend during that time, is there anyway possible I could've gotten pregnant? And also I'm having it taken out in a week and was wondering how long after does it take for your body to get back to its normal period schedule or does it ever??
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georgiagail responded:
The concern over antibiotics negatively affecting hormone containing birth control is generally unnecessary. The only antibiotics that MAY affect this type of birth control are rarely used; for example, Rifampin (listed in the attached article) use is often limited to treating tuberculosis.

The more commonly used antibiotics have no effect on birth control.

http://www.medicinenet.com/script/main/art.asp?articlekey=17192

How long it takes for your body to return to its normal period schedule varies widely.

Gail