"i&#039;ve been taking it on and off (mostly on) for 4 years. it&#039;s worked like a charm. even without the pill i&#039;ve always had a fairly regular cycle and my cramps have been manageable with aleve. with levora, my period is the same length but it&#039;s lighter, and the cramps are lighter. i almost always start the same evening and the period lasts 3 days, with 1-2 more days spotting. my only complaint- each time i&#039;ve gone on and off the pill, i&#039;ve gained a couple pounds. i haven&#039;t had issues with mood swings or anything. but, i know it isn&#039;t 100% effective especially if you vomit/have bad diarrhea within some time of taking the pill, which worried me when i lived in the developing world and got food poisoning a lot."