Isotretinoin 20mg is commonly prescribed to treat severe acne, especially when other treatments, like antibiotics, haven’t been effective. It works by reducing the amount of oil produced by sebaceous glands in the skin, preventing clogged pores and bacterial growth, which are key factors in acne development. Isotretinoin also helps reduce inflammation and the size of sebaceous glands. This medication is often used for cases of cystic acne or acne that causes scarring. It’s typically prescribed for a limited duration, and regular monitoring by a healthcare provider is important due to potential side effects.