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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A doctor has provided 1 answer
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