subject: Learn About a Treatment For Cystic Acne [print this page] Isotretinoin is a common medication used in the cystic acne treatment. However, there can be severe side effects of Isotrenionin treatment during pregnancy and it is advised not to use isotrenionin during pregnancy. Vitamin B5 or D calcium Pantothenate and Acnazine are other medications that take on a more natural course of therapy and does not possess the severe side effects of Isotrenionin pimple treatment.