Isotroin 10 Capsule contains isotretinoin 10 mg, a retinoid derivative primarily indicated for the treatment of severe recalcitrant nodular acne that is resistant to conventional therapies such as antibiotics and topical agents. Isotretinoin acts by reducing sebaceous gland size and sebum production, inhibiting the growth of acne-causing bacteria, and exhibiting anti-inflammatory properties. It modulates epithelial cell growth and differentiation, thereby preventing the formation of comedones and promoting the resolution of existing lesions. The recommended dosage should be individualized based on patient response and tolerance, with careful monitoring due to the drug’s potential for serious adverse effects, including teratogenicity, hepatotoxicity, and lipid abnormalities. Patients must undergo regular liver function tests and lipid profile assessments during treatment. Strict contraceptive measures are mandatory for female patients of childbearing potential to prevent pregnancy, as isotretinoin is highly teratogenic. Common side effects include dry skin, cheilitis, and photosensitivity. Isotroin 10 Capsule should be prescribed and used under the supervision of a qualified healthcare professional, with adherence to all safety guidelines to minimize risks and ensure optimal therapeutic outcomes in the management of severe acne vulgaris.