I would agree with Trapper and Maya's first message. Throw the anti's in the trash immediately. They will cause you a lot more health problems than they are worth. Once you start whenever you decide to stop it'll make your Acne (and over-all health) far far worse. By doing them for a short while and then quickly stopping, expect a break-out from hell immediately after (been there done that). And as mentioned a hindered immune system very suscebtible to infection. If you decide to do them long-term, you will be in for so many health issues your Acne will seem like a cake-walk in comparison.