Dynacirc CR (generic: isradipine) is a prescription medication used to treat high blood pressure. Dynacirc CR belongs to a group of drugs called calcium channel blockers, which work by relaxing the blood vessels, making it easier for the heart to pump blood.

This medication comes in a controlled release tablet form and is taken once a day, with or without food.

Common side effects of Dynacirc CR include headache, swelling, and constipation. Dynacirc CR can cause dizziness. Do not drive or operate heavy machinery until you know how Dynacirc CR affects you.