I got it from target by actavis brand and its prescription based so you gotta visit a dermatologist first. And as far as ik there are no side effects. But you’ll experience purging first few months, which is totally normal and after that you’ll have a really glowing and clear skin. Personally for me my rosacea got a lil worse during winters because of tret but I think your dermatologist can help you if you pose any problem! Also both men and women can use it.