Isotretinoin 40 mg is a powerful retinoid used to treat severe acne by targeting multiple causes of breakouts. It works by reducing oil (sebum) production in the skin's sebaceous glands, preventing clogged pores and bacterial overgrowth. Additionally, it has anti-inflammatory properties that help reduce redness and swelling. Isotretinoin also shrinks oil glands over time, leading to long-term acne improvement. Most patients see noticeable results within 4 to 6 months of treatment. While highly effective, it can cause dry skin, chapped lips, and sensitivity to sunlight , requiring proper skincare. Due to potential side effects, it is prescribed under strict medical supervision.