Prescription
Calcium channel blocker (heart and blood pressure medicine)
Diltiazem
Last reviewed April 2026
Who is this for?
What is this drug?
Diltiazem is a heart and blood pressure medicine that works by relaxing your blood vessels and slowing down your heart rate, making it easier for your heart to pump blood around your body.
What is it used for?
High blood pressurechest pain (angina)certain types of fast or irregular heartbeat
Prescription Required
A doctor's prescription is required to obtain this drug legally.