I have been taking Yasmin for over a year and it has really helped me. It has reduced my mood swings, shortened my periods and I generally feel a lot better. However, recently my doctor gave me a sample pack of Yaz until I could get my Yasmin filled by mail. Yikes! I have had cramping, I'm tired and I had at least two episodes of severe night sweats. I also noticed a light sprinkling of acne on my chin and jawline. I don't get acne! I have very normal skin. I'm really glad to be going back to Yasmin and I hope to continue taking it for years to come.