Isotretinoin:- This effective medicine is used to treat severe cystic acne. This medicine is taken by mouth. It belongs to the drug class of retinoids. It works by lowering facial oil production because a high amount of sebum can lead to severe acne. It is important that swallow the capsule whole. Usually, it has taken twice a day but we recommend always consult with the skincare doctor and consume as he directed. You can see the results of this medicine in 1-2 months. Complete the course of doses. Do not skip the medicines.