What aren't the sides of accutane! Its evil stuff and I think people are stupid resorting to accutane for a little back acne. It messes up your liver and gives you shocking lipid profiles, not to mention drying you out so bad that every few hours your lips just split open due to being so badly chapped.
B5 is an amazing prevention, not so good at getting rid of acne already extablished but taken in doses of 5g upwards a day, I don't get any extra acne, whether on cycle or pct.