The main function of isotretinoin is to inhibit sebaceous gland hyperplasia and reduce oil secretion, and its onset time varies with human dose. Generally, it takes about 1 week for dry skin and mild peeling of the face and lips, and acne will soon become less and less, but it takes at least 1 month to completely eliminate the original acne. Moreover, generally speaking, this drug mainly plays the role of oil control, and its efficacy cannot completely antagonize the role of hormones in antibodies. Does not mean that taking this medicine will not produce new acne. Usually the medication time is about a few months. If the drug is stopped suddenly, the condition may rebound. Generally, after taking effect, it can be gradually reduced under the guidance of a doctor and finally stopped. Large dosage of this product (above 3# per day) has great side effects, mainly reversible liver injury and fatty liver. Other side effects are terrible, but the incidence is very low. In addition, due to the teratogenic effect of this product, women need strict contraception within 3 months after taking and stopping the drug (drug metabolism period).

Isotretinoin is recognized as the most effective drug to treat acne at present, but this product is a prescription drug and cannot be taken without authorization.