Drug class
Calcium channel blockers
Relax blood vessels to lower blood pressure and ease angina.
How it works
These drugs block calcium from entering smooth-muscle cells in blood-vessel walls. The vessels relax, blood flows more easily, and the heart doesn't have to push as hard.
What it treats
High blood pressure, chronic stable angina, certain arrhythmias.
Common side effects
Ankle swelling, flushing, headache, occasional fatigue or constipation.
Drugs in this class
Educational only. Not medical advice. Always confirm with your prescriber or pharmacist.