Inderal LA 20 Tablet SR contains Propranolol 20mg, a non-selective beta-adrenergic receptor blocker used primarily in the management of cardiovascular conditions. This sustained-release formulation ensures a gradual release of propranolol, providing prolonged therapeutic effects and improved patient compliance through once-daily dosing. Inderal LA 20 is indicated for the treatment of hypertension, angina pectoris, cardiac arrhythmias, and for the prevention of migraine headaches. By blocking beta-1 and beta-2 adrenergic receptors, propranolol reduces heart rate, myocardial contractility, and cardiac output, thereby lowering blood pressure and decreasing myocardial oxygen demand. Additionally, it inhibits renin release from the kidneys, contributing to its antihypertensive effects. The sustained-release mechanism helps maintain stable plasma concentrations, minimizing peak-trough fluctuations and reducing the incidence of adverse effects such as dizziness and fatigue. Inderal LA 20 should be used with caution in patients with asthma, chronic obstructive pulmonary disease, diabetes mellitus, and peripheral vascular disease due to its non-selective beta-blocking properties. Dosage should be individualized based on clinical response and tolerability. Common side effects may include bradycardia, hypotension, fatigue, and gastrointestinal disturbances. Patients should not discontinue therapy abruptly to avoid exacerbation of angina or precipitating myocardial infarction.