A member asked:

I got a depo-provera birth control shot today. my last period started 6 days ago. how soon will the shot be effective, and can i have unprotected sex?

A doctor has provided 1 answer
Dr. Roy Arnold answered

Specializes in Internal Medicine

Effective: Depo Provera (medroxyprogesterone) initiated within 7 days of onset of menses prevents ovulation first month and is effective immediately according to published studies. Kapp N, Gaffield ME Contraception. 2013 May;87(5):576-82. Epub 2012 Sep 17

Answered 8/23/2014

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