Zeblong 8mg Tablet contains Azelnidipine, a long-acting dihydropyridine calcium channel blocker used primarily in the management of hypertension. Azelnidipine exerts its antihypertensive effect by selectively inhibiting the influx of calcium ions through L-type calcium channels in vascular smooth muscle cells, leading to vasodilation and a consequent reduction in peripheral vascular resistance. This mechanism helps lower elevated blood pressure, thereby reducing the risk of cardiovascular events such as stroke and myocardial infarction. Zeblong 8mg is indicated for the treatment of essential hypertension and may be used as monotherapy or in combination with other antihypertensive agents to achieve optimal blood pressure control. The extended half-life of Azelnidipine allows for once-daily dosing, promoting patient compliance. Common adverse effects may include headache, dizziness, flushing, and peripheral edema, although it is generally well tolerated. Caution is advised in patients with severe hypotension, aortic stenosis, or heart failure. Regular monitoring of blood pressure and renal function is recommended during therapy. Zeblong 8mg should be used under medical supervision, with dosage adjustments based on therapeutic response and tolerability. It is contraindicated in patients with known hypersensitivity to Azelnidipine or other dihydropyridine derivatives.