Diltiazem 30 mg, 60 mg, 90 mg, 120 mg Tablets and Extended-Release Capsules

What is Diltiazem?

Diltiazem is a prescription calcium channel blocker used to treat high blood pressure, control chest pain (angina), and manage certain heart rhythm disorders such as atrial fibrillation. It works by relaxing the blood vessels and slowing the heart rate, which improves blood flow and reduces the heart's workload.

Diltiazem is available in immediate-release tablets and extended-release capsules, which allow for once-daily dosing in some cases. It may be used alone or in combination with other heart and blood pressure medications to achieve optimal results.

How It Works

Diltiazem blocks calcium from entering the muscle cells of the heart and blood vessel walls. Calcium is essential for muscle contraction, so reducing its entry causes the blood vessels to relax and the heart to beat with less force. This leads to lower blood pressure and improved oxygen delivery to the heart muscle.

In patients with arrhythmias, diltiazem helps slow the conduction of electrical signals through the heart, which can restore a more normal rhythm. Its dual benefits — lowering blood pressure and controlling heart rate — make it a valuable treatment for multiple cardiovascular conditions.

Dosage Information

Diltiazem dosing depends on the specific condition and formulation. Common regimens include:

• Immediate-release tablets: 30 mg to 60 mg taken three or four times daily
• Extended-release capsules: 120 mg to 360 mg once daily

Doses are adjusted based on blood pressure, heart rate, and individual response. Do not crush or chew extended-release forms. If you plan to buy diltiazem online, confirm the formulation matches your prescription. Generic versions are widely available and can be a cheap and effective option.

Side Effects

Common side effects of diltiazem include:

• Swelling in the ankles or feet
• Dizziness or lightheadedness
• Fatigue
• Headache
• Flushing

More serious but less common effects include slow heart rate, low blood pressure, and worsening of heart failure symptoms in susceptible individuals. Seek immediate care if you experience fainting, shortness of breath, or irregular heartbeat.

When buying diltiazem online, use a reputable source that provides safety instructions and highlights potential interactions, especially if you take other heart medications.

Warnings & Interactions

Diltiazem should be used with caution in people with low blood pressure, certain types of heart block, or severe heart failure. It can interact with drugs such as beta-blockers, digoxin, statins, and medications that affect liver enzymes.

Grapefruit juice may increase diltiazem levels in the blood, raising the risk of side effects. Avoid sudden discontinuation, as this can cause a rebound increase in blood pressure or chest pain.

If you plan to buy diltiazem online, ensure the pharmacy verifies your prescription and provides clear warnings about drug interactions. Cheap generic options are available but should always come from licensed suppliers.