Medically reviewed by Jessica Swirble, PharmD
Last updated on 7/3/2024
Drug Information | Side Effects | Use & Dosage | Request a Prescription
Diltiazem ER (extended-release) is a prescription medication used to treat high blood pressure (hypertension), chest pain (angina), and certain heart rhythm disorders.
Doctors prescribe diltiazem ER to treat several cardiovascular conditions, such as:
Diltiazem ER may be prescribed with other treatment strategies like lifestyle changes and other medications.
Diltiazem ER belongs to a class of drugs known as calcium channel blockers. It works by relaxing the muscles of your heart and blood vessels. By blocking calcium from entering the cells of the heart and arterial walls, diltiazem ER helps to lower blood pressure, reduce chest pain, and regulate heart rhythm.
Diltiazem ER is available as an extended-release oral capsule or tablet.
The dosage and frequency of use depend on the condition being treated, its severity, and how you respond to the medication.
Follow your healthcare provider's instructions regarding dosage and schedule. Do not exceed the prescribed dose or frequency of use without consulting your provider.
Diltiazem ER is used to manage hypertension, angina, and heart rhythm disorders. The effects can be noticeable within a few hours, but it may take several days to achieve the desired improvement in symptoms.
Continue using diltiazem ER as prescribed, even if you start feeling better. Regular use according to your prescription is crucial for the management of your condition.
While diltiazem ER is primarily used for treating hypertension, angina, and certain heart rhythm disorders, healthcare providers may prescribe it off-label for other conditions.
Discuss any alternative uses of diltiazem ER with your healthcare provider.
Diltiazem ER is available in the following dosage forms:
Diltiazem ER is a prescription medication. You must have a valid prescription from a licensed healthcare provider to obtain it.