I have PMDD and have been taking Yasmin for about a year with wonderful results. It's like I got my life back. On a whim almost 2 months ago at my yearly exam I asked if my Dr. had any samples of Yasmin because I was nearly out. She didn't and said I could try Yaz which she had samples of. I took them for 1 month and 1 week but I had to stop...I felt so irritable and hateful, I cried at the drop of a hat, I want to eat everything in the house, I'm exhausted and have lost what sex drive I had. The only positive thing about it for me was the 2 1/2 day period with no cramps. But I was miserable with anxiety and mood swings. I have stopped taking it about 4 days ago and am slowly feeling more calm and will go back to Yasmin However...every body is different and what works for one may not work someone else so I'm not saying Yaz is bad...but these affects are happening to some of us out there sp it may not be right for everyone!