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Diltiazem 120 mg SR Tablet Uses, Side Effects & Dosage

Aug 30, 2025

Introduction

DILTIAZONE SR 120 contains Diltiazem Hydrochloride 120 mg in a sustained-release formulation. Diltiazem belongs to the class of calcium channel blockers (CCBs) and is commonly used for hypertension (high blood pressure), angina (chest pain), and certain heart rhythm disorders. Sustained-release tablets provide controlled medication release, ensuring long-lasting effects with reduced dosing frequency.

Composition

  • Active Ingredient: Diltiazem Hydrochloride 120 mg (Sustained Release)

  • Brand Name: DILTIAZONE SR 120

  • Form: Tablet

Uses of Diltiazem Hydrochloride 120 mg SR Tablet

Diltiazem 120 mg SR tablets are prescribed for:

  • Hypertension (High Blood Pressure): Helps relax blood vessels, lowering blood pressure and reducing heart workload.

  • Angina (Chest Pain): Improves blood flow to the heart, preventing or reducing chest pain episodes.

  • Arrhythmias (Heart Rhythm Disorders): Controls abnormal heartbeats by slowing down the heart rate.

  • Prevention of Heart-related Complications: Reduces risk of stroke, heart attack, and kidney damage caused by high blood pressure.

How Diltiazem Works

Diltiazem blocks calcium ions from entering the heart and blood vessel walls, resulting in:

  • Relaxation of blood vessels

  • Improved oxygen delivery to the heart

  • Reduced heart rate

  • Decreased blood pressure

Dosage & Administration

  • Usual adult dose: 120 mg once or twice daily (as prescribed by a doctor).

  • Tablet should be swallowed whole with water, do not crush or chew.

  • Take the medicine at the same time every day for best results.

  • Dose may vary depending on medical condition and response.

Side Effects of Diltiazem 120 mg SR Tablet

Common side effects may include:

  • Headache

  • Dizziness or lightheadedness

  • Flushing (warmth, redness of skin)

  • Swelling in ankles or feet

  • Slow heart rate (bradycardia)

  • Stomach upset or constipation

Serious side effects (rare):

  • Severe chest pain

  • Fainting

  • Shortness of breath

  • Irregular heartbeat

Seek medical help immediately if serious side effects occur.

Precautions

  • Inform doctor if you have liver, kidney, or heart conditions.

  • Avoid alcohol, as it may increase side effects like dizziness.

  • Pregnant or breastfeeding women should use only under medical supervision.

  • Not recommended for patients with severe heart failure or low blood pressure.

Drug Interactions

Diltiazem may interact with:

  • Beta-blockers (e.g., atenolol, metoprolol)

  • Digoxin

  • Statins (e.g., simvastatin, atorvastatin)

  • Antihypertensive drugs

  • Antiarrhythmics

Always inform your doctor about all ongoing medications.

Why Choose Steris Healthcare?

Steris Healthcare provides high-quality, WHO-GMP certified formulations like DILTIAZONE SR 120. With a patient-first approach, Steris ensures safe, effective, and affordable medicines available across India.

FAQs about Diltiazem 120 mg SR Tablet

Q1. What is Diltiazem 120 mg SR Tablet used for?
It is used for controlling high blood pressure, treating angina (chest pain), and managing heart rhythm disorders.

Q2. Can I take Diltiazem with other blood pressure medicines?
Yes, but only under a doctor’s supervision, as combining may increase the risk of low blood pressure or slow heart rate.

Q3. How long does Diltiazem take to work?
Diltiazem usually starts working within a few hours, but full benefits may be seen after 2–4 weeks of regular use.

Q4. Can I stop taking Diltiazem suddenly?
No. Stopping suddenly may worsen chest pain or raise blood pressure. Always consult your doctor before discontinuation.

Q5. Is Diltiazem safe for long-term use?
Yes, it is generally safe when taken under medical supervision for chronic conditions like hypertension and angina.

Q6. Can I drink alcohol while taking Diltiazem?
It is best to avoid alcohol, as it may enhance dizziness and low blood pressure effects.

Q7. What should I do if I miss a dose?
Take it as soon as you remember. If it is near the time for your next dose, skip the missed one. Do not double the dose.

 

Conclusion

DILTIAZONE SR 120 (Diltiazem Hydrochloride 120 mg Sustained Release Tablet) is an effective and reliable medicine for hypertension, angina, and heart rhythm disorders. With its sustained release action, it provides long-lasting control, improving patient outcomes and quality of life.

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