Diltiazem extended release controlled delivery (CD) capsules are used to treat high blood pressure, chest pain (angina), and certain heart rhythm disorders. They work by relaxing the muscles of your heart and blood vessels, making it easier for the heart to pump and for blood to flow. Diltiazem belongs to a class of medications called calcium channel blockers, which help reduce the workload on the heart and improve oxygen delivery to the heart muscle.
- Diltiazem may be used alone or in combination with other antihypertensive agents
- Extended-release formulation allows for once daily dosing
- Can be taken with or without food, but recommended to follow consistent dosing schedule at the same time every day
- Patients should avoid grapefruit juice while taking diltiazem as it may increase drug levels and side effects
- Capsules should be swallowed whole and not crushed, chewed, or split
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Diltiazem ER (CD) Capsules Side Effects
Common side effects of diltiazem capsules include dizziness, headache, fatigue, nausea, and flushing. Some patients may experience constipation or swelling in the lower limbs. Serious side effects can include bradycardia (slow heart rate), hypotension (low blood pressure), and heart block, especially in those with pre-existing conduction abnormalities. Rare but severe reactions include liver dysfunction and allergic responses. Patients should monitor for signs of slow heartbeat, shortness of breath, or swelling, and report any unusual symptoms to their healthcare provider promptly
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Diltiazem ER (CD) Capsules Medication Description
Diltiazem extended-release capsules are a widely used cardiovascular medication that helps manage conditions like high blood pressure, angina, and certain arrhythmias. As a calcium channel blocker, diltiazem works by inhibiting calcium ion entry into cardiac and vascular smooth muscle cells. This leads to vasodilation, reduced heart rate, and decreased myocardial oxygen demand. These effects make it particularly useful for patients with chronic stable angina and hypertension.
Extended-release formulations of diltiazem allow for once-daily dosing, which enhances convenience and compliance. The medication is often part of a broader treatment plan that may include lifestyle changes and other drugs. Clinicians appreciate its relatively mild negative inotropic effect, which allows its use in patients with mild heart failure. However, careful consideration is needed when prescribing diltiazem alongside other medications that affect heart rate or blood pressure due to potential interactions. -
Consumer Information Use and Disclaimer
This information should not be used to decide whether or not to take this medicine or any other medicine. Only a healthcare provider has the knowledge and training to decide which medicines are right for you. TelyRx does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a limited summary of general information about the medicine’s uses from the patient education materials and is not intended to be comprehensive. This limited summary does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not intended to provide medical advice, diagnosis or treatment and does not replace information you may receive from your healthcare provider. For a more detailed summary of information about the risks and benefits of using this medicine, please review the entire patient education information you receive with the medication.
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