Imulast 200mg Tablet contains Hydroxychloroquine 200mg, an antimalarial and immunomodulatory agent primarily used in the treatment of autoimmune diseases such as rheumatoid arthritis, systemic lupus erythematosus, and certain dermatological conditions. Hydroxychloroquine exerts its therapeutic effects by modulating the immune response, reducing inflammation, and interfering with the communication between immune cells. It is also employed as a prophylactic and treatment option for malaria caused by Plasmodium species. Imulast is indicated for patients requiring long-term management of autoimmune disorders to alleviate symptoms such as joint pain, swelling, and skin rashes, thereby improving quality of life. The medication is administered orally, with dosage tailored according to the specific condition and patient response. Common adverse effects include gastrointestinal disturbances, headache, and skin reactions, while rare but serious side effects may involve retinopathy, necessitating regular ophthalmologic monitoring during prolonged therapy. Caution is advised in patients with pre-existing retinal or hepatic conditions. Imulast should be used under medical supervision, with periodic assessment to ensure efficacy and safety. It is contraindicated in individuals with hypersensitivity to hydroxychloroquine or related compounds. Proper adherence to prescribed dosage and monitoring protocols is essential to optimize therapeutic outcomes and minimize risks.