A couple months ago, I started taking the generic for Yaz (Gianvi). I actually started taking the drug to ease cramp symptoms and to clear up my skin (which wasn't horrible, but I'd have a few zits a month).
During the first pack, I bled almost every day. Not breakthrough bleeding. It was like having my period for an entire month. Also, my skin broke out HORRIBLY (cheeks covered in blemishes. I've never had skin like this). I also suspect that the pill is making my weight loss much slower.
Previously, I took Yasmin for a couple years and had absolutely no negative side effects. And perfect skin.
Long story short, steer clear of Gianvi! Try something else!