Used primarily in the treatment of hypertension and chronic stable angina, this compound acts as a long-acting calcium channel blocker. It works by relaxing vascular smooth muscle, leading to dilation of peripheral arteries and reduced systemic vascular resistance, which lowers blood pressure. It also reduces myocardial oxygen demand by decreasing afterload and, to a lesser extent, preload. Due to its enantiomeric purity, the (S)-enantiomer provides the majority of the pharmacological activity, allowing for lower dosing and potentially reduced side effects compared to the racemic mixture. Commonly prescribed as a once-daily oral tablet, it offers consistent 24-hour blood pressure control and is often used in combination with other antihypertensive agents such as ACE inhibitors, beta-blockers, or diuretics.