Hydroxy Q Tablet contains Hydroxychloroquine 300 mg, an antimalarial and immunomodulatory agent primarily used in the treatment and prevention of malaria, as well as autoimmune diseases such as rheumatoid arthritis and systemic lupus erythematosus. Hydroxychloroquine exerts its therapeutic effects by interfering with lysosomal activity and antigen presentation in immune cells, thereby modulating inflammatory responses. It also increases the pH within intracellular vacuoles, impairing parasite growth in malaria. This medication is indicated for the management of acute and chronic malaria infections caused by Plasmodium species and for reducing inflammation and joint pain associated with autoimmune conditions. Hydroxy Q Tablet should be administered under medical supervision, with dosage tailored to the specific condition and patient response. Common adverse effects include gastrointestinal disturbances, headache, dizziness, and skin reactions; however, serious side effects such as retinopathy may occur with prolonged use, necessitating regular ophthalmologic monitoring. Caution is advised in patients with pre-existing retinal or cardiac conditions. Hydroxy Q Tablet is contraindicated in individuals with hypersensitivity to hydroxychloroquine or related compounds. Patients should inform their healthcare provider of any concurrent medications to avoid potential drug interactions. Proper adherence to prescribed dosing and follow-up is essential to ensure safety and efficacy.