Opichlor Tablet contains Chlorpheniramine Maleate 4mg, an antihistamine commonly used to relieve symptoms associated with allergic conditions such as rhinitis, urticaria, and conjunctivitis. Chlorpheniramine Maleate functions by competitively antagonizing histamine H1 receptors, thereby reducing the effects of histamine released during allergic reactions. This action helps alleviate symptoms including sneezing, runny nose, itching, watery eyes, and skin rashes. Opichlor is indicated for the management of allergic disorders, hay fever, and other hypersensitivity reactions. The tablet formulation allows for convenient oral administration, with a recommended dosage tailored according to patient age, severity of symptoms, and clinical judgment. Common side effects may include drowsiness, dry mouth, dizziness, and gastrointestinal disturbances; caution is advised when operating machinery or driving. Use in pregnancy and lactation should be under medical supervision. Patients with a history of hypersensitivity to Chlorpheniramine or related compounds, glaucoma, prostatic hypertrophy, or respiratory conditions should consult a healthcare professional prior to use. Opichlor Tablet offers effective symptomatic relief by mitigating histamine-mediated allergic responses, contributing to improved patient comfort and quality of life. Always adhere to prescribed dosages and consult a healthcare provider for prolonged use or if symptoms persist.