Cardizem SR (Diltiazem SR)

Cardizem SR

(Brand Option)

Prescription RequiredPrescription Required
FormulationFormulation: Modified Release Tablet
Select Dosage

Select Quantity

$67.00 ($0.74 per tablet)

$121.00 ($0.67 per tablet)

Diltiazem SR

(Generic Alternative)

Prescription RequiredPrescription Required

This generic medication is not available at the moment.

Norton Shopping Guarantee

Cardizem SR (sustained-release diltiazem) is indicated for the following:

  • Treatment of High Blood Pressure (Hypertension): Cardizem SR is used to treat high blood pressure, also known as hypertension. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. It is a calcium channel blocker that works by relaxing blood vessels in the body and heart so blood can flow more easily. This effect lowers blood pressure. Cardizem SR may also lower the heart rate.
  • Management of Chronic Stable Angina and Angina Due to Coronary Artery Spasm: Cardizem SR is indicated for the management of chronic stable angina and angina due to coronary artery spasm.


  • Take Cardizem SR by mouth with or without food, usually twice daily or as directed by your healthcare provider. Swallow the tablets whole.
  • Your healthcare provider may gradually increase your dose based on your medical condition, response to treatment, and other medications you may be taking. Follow their instructions carefully.
  • Use this medication regularly to get the most benefit from it. To help you remember, take it at the same times each day. 
  • Continue taking this medication even if you feel well, as most people with high blood pressure do not feel sick.
  • If Cardizem SR is used for angina, it must be taken regularly to be effective and should not be used to treat angina when it occurs. Other medications, such as nitroglycerin placed under the tongue, should be used to relieve an angina attack as directed by your healthcare provider.
  • It may take up to 2 weeks before you get the full benefit of this drug. If your condition does not improve or worsens, such as if your blood pressure readings remain high or increase, inform your healthcare provider.


  • Do not crush or chew the tablets, as doing so can release all of the drug at once and may increase the risk of side effects.

Common Side Effects:

  • Body aches or pain
  • Congestion
  • Cough
  • Dryness or soreness of the throat
  • Fever
  • Hoarseness
  • Runny nose
  • Edema
  • Headache
  • Dizziness
  • Asthenia
  • First-degree AV block
  • Bradycardia
  • Flushing
  • Nausea
  • Rash

Serious Side Effects:

  • Acute generalized exanthematous pustular dermatitis
  • Desquamative erythema with or without fever
  • Allergic reactions
  • Alopecia
  • Angioedema (including facial or periorbital edema)
  • Asystole
  • Erythema multiforme (including Stevens-Johnson syndrome, toxic epidermal necrolysis)
  • Extrapyramidal symptoms
  • Gingival hyperplasia

Not all of these side effects may occur, and if they do, they may require medical attention. Always consult your healthcare provider for personalized medical advice and recommendations.

Cardizem SR should not be used if you are allergic to diltiazem hydrochloride or any of the ingredients listed in the leaflet. Allergic reactions may include asthma, swelling of the face, hives, itching, or fainting. Always check the ingredients to ensure safe use.

Avoid using Cardizem SR if you have certain types of abnormal heart rhythm, hypotension (low blood pressure), have had a heart attack or other heart-related complications, or have pulmonary congestion (fluid on the lungs).

Do not use Cardizem SR if you are currently taking specific medications such as dantrolene (muscle relaxant) or ivabradine (for heart failure/angina).

Seek emergency medical attention or call the Poison Help line in case of an overdose. Overdose symptoms may include low blood pressure, slow heart rate, severe dizziness, or fainting.

Avoid drinking alcohol while taking Cardizem SR, as it may lead to dose-related adverse effects. Also, avoid taking an herbal supplement containing St. John's wort. Additionally, be cautious when getting up too fast from a sitting or lying position, as this medication may cause dizziness. Avoid driving or hazardous activities until you know how this medicine will affect you.

Generic name:

Diltiazem SR


Modified Release Tablet

Strength(s): 60mg
Quantities Available: 90, 180
Important Information
The information above for Cardizem SR (Diltiazem SR) was provided to by third parties. In no way should this information substitute for the advice of a physician. Consult a doctor or qualified health care professional if you have any medical concerns. widget logo
Customer Care Customer Care

Excellent Customer Care We Are Here for You

Guiding you every step of the way, ensuring access to affordable medicines. Our customer service team is available seven days a week to answer any questions or to address any concerns you may have. Please give us a call at Doctor Solve on Monday to Friday from 6am-8pm PST, or Saturdays and Sundays from 7am-5pm PST.