"i have been on sronyx for over four years now. even from the very beginning i have not experienced any negative side effects with one exception (spotting in between periods has happened three times before, but nothing major). i know birth control affects each woman differently. my personal experience with sronyx has been a very positive one. i have had no mood swings, no cramps during period, no heavy periods, no problems with weight/acne, and no changes in sex drive. i give it a nine out of ten only because of the occasional spotting in between periods."