Yes, Tretin-Iso 20 Capsule (Isotretinoin 20 mg) is used to treat severe acne, especially nodular or cystic acne, that does not respond well to other treatments. It works by reducing oil production, preventing clogged pores, and decreasing inflammation to help clear the skin. Before starting this medication, please talk to your doctor or dermatologist to ensure it is safe and suitable for your condition.