"i switched to aviane from yaz, since the pharmacy told me it was the same but cheaper. it was not! i took yaz for over 5 years and switched to aviane, and have been taking it for about 1 year now. pros: short period, no mood swings. cons: my acne is so bad and getting worse. (i actually have a much more healthy lifestyle than before, so i don&#039;t know what else it could be). i need to switch back soon or else my face is going to be wrecked. also, very low sex drive like almost non existent, which could be a pro or con."