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Dilt-Xr Capsule — prescription drug image

Dilt-Xr

Dilt-XR 240MG

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What is Dilt-Xr?

Dilt-XR is used to treat high blood pressure and chest pains. Diltiazem is the generic version of Dilt-XR. The average price of Dilt-XR is around $50 for a supply of 30, 240 mg capsules. Use our Rx.com savings offer to get great discounts on Dilt-XR at participating pharmacies near you.

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What is Dilt-Xr ?

Dilt-XR is used to treat high blood pressure and chest pains. Diltiazem is the generic version of Dilt-XR. The average price of Dilt-XR is around $50 for a supply of 30, 240 mg capsules. Use our Rx.com savings offer to get great discounts on Dilt-XR at participating pharmacies near you.
  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
  • Lightheadedness, dizziness, fainting
  • Rapid weight gain, swelling in your hands, ankles, or feet
  • Blistering, peeling, red skin rash
  • Slow, fast, pounding, or uneven heartbeat
  • Worsening chest pain, trouble breathing
  • Dark urine or pale stools, nausea, vomiting, loss of appetite, stomach pain, yellow skin or eyes
  • Keep all medicine out of the reach of children. Never share your medicine with anyone.
  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
  • Do not stop using this medicine suddenly without asking your doctor, or you could develop life-threatening heart problems.
  • This medicine may make you dizzy, drowsy, or lightheaded. Stand or sit up slowly if you feel lightheaded or dizzy. Do not drive or do anything else that could be dangerous until you know how this medicine affects you.
  • This medicine may cause the following problems:Worsening heart failureLiver problemsSerious skin reactions, including Stevens-Johnson syndrome, toxic epidermal necrolysis
  • Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, heart failure, heart rhythm problems, or stomach or bowel problems.
What is Dilt-XR used for?
Dilt-XR is FDA-approved to treat high blood pressure (hypertension), either alone or in combination with other antihypertensive medications such as diuretics, and for the management of chronic stable angina. It is a once-daily extended-release capsule of diltiazem hydrochloride.
Is Dilt-XR the same as Dilacor XR?
Dilt-XR is Apotex's branded generic of once-daily extended-release diltiazem, and Apotex lists it as bioequivalent to Dilacor XR, the reference product it was approved against. It uses the same active ingredient, diltiazem hydrochloride, in a capsule built from multiple 60 mg units that release the drug over 24 hours. Dilt-XR is not the equivalent of every extended-release diltiazem product: brands such as Cardizem CD, Tiazac, and Cardizem LA use different delivery systems, are approved against different reference products, and fall into different therapeutic-equivalence subgroups, so ask your pharmacist before switching products.
What are the most common side effects of diltiazem extended-release?
The more common side effects are swelling in the ankles or feet (edema), headache, dizziness, a slow heart rate, constipation, fatigue, nausea, and rash. Less commonly, diltiazem can cause low blood pressure or AV block, especially alongside beta-blockers or digoxin. Rare but serious problems include liver injury and severe skin reactions. Contact your provider if a rash appears and keeps spreading, or if you feel faint or notice a very slow pulse.
Can you cut or crush Dilt-XR capsules?
No. Dilt-XR capsules must be swallowed whole. Do not open, chew, or crush them, because doing so releases the whole 24-hour dose at once. If you have trouble swallowing capsules, talk with your prescriber or pharmacist about other options rather than altering the capsule.
What should you avoid while taking diltiazem?
Tell your prescriber and pharmacist about every medicine you take. Diltiazem interacts with drugs that also slow the heart, such as beta-blockers, digoxin, and ivabradine, and it affects the CYP3A4 enzyme, which means important interactions with simvastatin and lovastatin (which have dose limits), carbamazepine, cyclosporine, and other CYP3A4 inhibitors or inducers. Do not stop diltiazem abruptly without medical advice, since angina can get worse.
How much does Dilt-Xr cost without insurance?
The price of Dilt-Xr without insurance varies by pharmacy, dosage, and quantity. Rx.com compares cash prices at more than 60,000 US pharmacies so you can find the lowest price near you.
What are the common side effects of Dilt-Xr?
Common side effects of Dilt-Xr may include: Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing, Lightheadedness, dizziness, fainting, Rapid weight gain, swelling in your hands, ankles, or feet, Blistering, peeling, red skin rash, Slow, fast, pounding, or uneven heartbeat. This is not a complete list — consult your pharmacist or doctor for full side effect information.
Is there a generic version of Dilt-Xr?
Generic versions may be available for Dilt-Xr. Generics contain the same active ingredients as brand-name drugs and are typically 80–90% cheaper. Search Dilt-Xr on Rx.com to compare generic and brand prices at pharmacies near you.
What is the cheapest pharmacy for Dilt-Xr?
The cheapest pharmacy for Dilt-Xr depends on your location and dosage. Rx.com compares prices at CVS, Walgreens, Walmart, Kroger, Costco, and thousands of independent pharmacies. Enter your ZIP code on Rx.com to find the lowest price for Dilt-Xr near you.

Dilt-Xr Coupons & Prices

Dilt-XR 240MG

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Dilt-Xr Capsule — prescription drug image
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Use a free Dilt-XR coupon from Rx.com to compare cash prices for diltiazem hydrochloride extended-release capsules at more than 60,000 pharmacies near you. Dilt-XR is Apotex's branded generic of once-daily extended-release diltiazem, prescribed for high blood pressure and chronic stable angina. Because pharmacies set their own cash prices and those prices can vary widely from one store to the next, it is worth checking before you fill. Enter your ZIP code above to see today's price at pharmacies in your area.

What is Dilt-XR and how does it work?

Dilt-XR is a brand of diltiazem hydrochloride extended-release capsules made by Apotex. Diltiazem is a calcium channel blocker, specifically a non-dihydropyridine benzothiazepine that slows the movement of calcium into heart and blood vessel cells. That relaxes blood vessels, lowers blood pressure, and eases the heart's workload, which helps prevent angina attacks.

The FDA-approved uses for these extended-release capsules are the treatment of hypertension (alone or in combination with other antihypertensive medications, such as diuretics) and the management of chronic stable angina. Dilt-XR comes as 120 mg, 180 mg, and 240 mg once-daily capsules built from multiple 60 mg units that release the medicine over 24 hours, and Apotex lists it as bioequivalent to Dilacor XR.

Dilt-XR cost and coupon savings without insurance

Diltiazem extended-release is a widely stocked generic, but that does not mean every pharmacy charges the same. Cash prices for the same strength and quantity can differ substantially between a chain, a grocery pharmacy, and an independent a few miles away, which is exactly why comparing matters. Rx.com's free coupon compares cash prices across more than 60,000 U.S. pharmacies so you can see who is cheapest near you before you hand over the prescription.

There is no manufacturer savings card for Dilt-XR. If you have insurance, it is still worth asking the pharmacist to run both your plan and the coupon, since one is sometimes lower than the other. The coupon is a cash-discount price, not insurance, and cannot be combined with it. Enter your ZIP above to see today's price for your strength and quantity.

Dilt-XR vs. Dilacor XR and other diltiazem options

Apotex lists Dilt-XR as bioequivalent to Dilacor XR, the once-daily extended-release diltiazem capsule it was approved against. Both are built the same way, from multiple 60 mg extended-release units that deliver the drug over 24 hours in 120 mg, 180 mg, and 240 mg strengths. Other extended-release diltiazem products your prescriber may name include Cardizem CD, Tiazac, Taztia XT, Cartia XT, Matzim LA, and Cardizem LA. These are not all interchangeable with one another, because extended-release diltiazem products use different delivery systems and are approved against different reference products. The FDA's Orange Book splits extended-release diltiazem capsules into separate therapeutic-equivalence subgroups for this reason, and a product in one subgroup is not rated as equivalent to a product in another. Whether a pharmacy may substitute one product for another depends on state law and the product's equivalence rating, so it is not automatic. Do not switch between them on your own, and if your pharmacy dispenses a different label than you are used to, ask the pharmacist to confirm it is the correct equivalent.

Immediate-release diltiazem and the Cardizem brand are taken more than once a day and are a different dosing schedule, not a direct swap for a once-daily capsule. Prescribers sometimes choose a different drug class entirely for blood pressure or angina, such as verapamil (the other rate-slowing calcium channel blocker), amlodipine or nifedipine (dihydropyridine calcium channel blockers), or a beta-blocker like metoprolol. Which one fits you is a conversation for your prescriber.

Dilt-XR safety, side effects, and interactions

Diltiazem extended-release capsules do not carry a boxed warning. The main risks are a slow heart rate (bradycardia), AV block, and low blood pressure, and these become more likely when diltiazem is combined with beta-blockers, digoxin, ivabradine, or other drugs that slow the heart. Dilt-XR should not be used by people with sick sinus syndrome or second- or third-degree AV block without a functioning ventricular pacemaker, by people with acute myocardial infarction and pulmonary congestion, by people whose systolic blood pressure is under 90 mmHg, or by people who have shown hypersensitivity to the drug. Because diltiazem weakens the heart's squeeze, caution is needed in reduced ejection fraction heart failure. Common side effects include swelling (edema), headache, dizziness, slow heart rate, constipation, fatigue, nausea, and rash.

Rarely, diltiazem has caused acute liver injury and severe skin reactions such as erythema multiforme, Stevens-Johnson syndrome, and toxic epidermal necrolysis; stop the drug and contact your provider right away if a rash appears and is spreading or getting worse. Diltiazem is both a substrate and an inhibitor of the CYP3A4 enzyme, so it has important interactions with statins (simvastatin and lovastatin have dose limits), carbamazepine, cyclosporine, and other CYP3A4 inhibitors and inducers. Give your pharmacist your full medication list. This information is a summary, not medical advice, and does not replace the guidance of your doctor or pharmacist.

Sources & accuracy

This Dilt-Xr information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.

Verify the official label: Dilt-Xr on DailyMed (FDA)

Reviewed against FDA labeling · Last reviewed July 2026

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Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.


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