Diltiazem is an antihypertensive drug belonging to the group of calcium channel blockers. In addition, Diltiazem is also used to improve angina and Raynaud's phenomenon. The mechanism of calcium channel blockers is generally used to lower blood pressure in the treatment of hypertension, angina, atrial fibrillation, and migraines by dilating blood vessels allowing blood to flow more easily. to different parts of the body.