Used primarily in the treatment of hypertension (high blood pressure). It belongs to the class of calcium channel blockers, which work by relaxing blood vessels, allowing blood to flow more easily. This helps reduce the workload on the heart and lowers the risk of stroke, heart attack, and kidney problems. Lacidipine is known for its long duration of action, allowing for once-daily dosing. It is often prescribed when other antihypertensive medications are not well tolerated, due to its favorable side effect profile. The drug is particularly effective in elderly patients and those with isolated systolic hypertension.