Save money on Cartia XT (Diltiazem ER) in 2026. Compare prices, find coupons, and learn about patient assistance programs that can help.
If you take Cartia XT (Diltiazem extended-release) for high blood pressure or angina, you may be wondering what it costs — especially if you're paying out of pocket, switching pharmacies, or dealing with a coverage gap. The good news: this is one of the more affordable heart medications on the market, especially in generic form.
In this guide, we'll break down exactly what Cartia XT and generic Diltiazem ER cost in 2026, show you how to find the best prices, and walk you through every savings option available — from free discount cards to patient assistance programs for people who need extra help.
Let's start with the numbers. Here's what you can expect to pay at a retail pharmacy without insurance or discount cards:
A 90-capsule supply is a 3-month (90-day) supply when taking one capsule daily, which is the standard dosing for Cartia XT.
Brand-name Cartia XT typically costs more — potentially $70-$200+ for 90 capsules depending on the strength and pharmacy. Since generic Diltiazem ER is widely available and therapeutically equivalent, most patients save significantly by using the generic.
If you're not sure whether you're getting the brand or generic, ask your pharmacist. In most cases, your pharmacy will automatically dispense the generic unless your prescriber specifies "brand medically necessary" or your insurance requires the brand.
Even if you're already paying a reasonable cash price, discount cards can cut your costs even further. These are free to use and work whether you have insurance or not:
GoodRx is one of the most popular prescription discount tools. For generic Diltiazem ER, GoodRx typically shows prices as low as $10-$20 for a 30-day supply at major pharmacies. GoodRx Gold (a paid membership) offers prices as low as $25.27 for a 90-day supply.
How to use it: Visit goodrx.com or download the GoodRx app. Search for "Diltiazem ER" and your dosage. Show the coupon to your pharmacist at checkout.
SingleCare offers savings of up to 80% off the retail price of Cartia XT and generic Diltiazem ER. Prices vary by pharmacy, so compare a few locations through the app or website.
Several other free discount cards can help reduce your cost:
Pro tip: Prices vary between discount programs and between pharmacies. It's worth checking 2-3 different cards for the same medication to find the lowest price at a convenient pharmacy.
If you're struggling to afford your medication — even with discount cards — patient assistance programs (PAPs) may be able to help. These are typically designed for people who are uninsured, underinsured, or on a low income.
PAN helps cover copays and out-of-pocket costs for patients with health insurance. To be eligible, you generally need to:
Contact: 866-316-7263 or visit panfoundation.org
HealthWell offers copay assistance for eligible patients with commercial insurance. They cover a variety of cardiovascular medications including Diltiazem formulations. Visit healthwellfoundation.org for current eligibility and fund availability.
Rx Outreach is a nonprofit mail-order pharmacy that offers generic medications at very low prices — often significantly below retail. They serve patients with or without insurance. Generic Diltiazem ER is available through their program.
Contact: 314-222-0472 or visit rxoutreach.org
These are databases that help you find patient assistance programs based on your medication and financial situation:
Buying a 90-day supply is almost always cheaper per pill than buying 30 days at a time. At many pharmacies, 90 capsules of generic Diltiazem ER cost only $24-$37 — that's roughly $8-$12 per month. Compare that to paying $15-$25 per month for 30-day refills, and the savings add up over a year.
Mail-order pharmacies often offer lower prices than retail, especially for 90-day supplies. Options include:
Prices for the same generic medication can vary dramatically between pharmacies — even pharmacies on the same block. A 30-day supply of Diltiazem ER might cost $30 at one pharmacy and $12 at another. Always compare prices using GoodRx, SingleCare, or Medfinder before filling your prescription.
Some retail pharmacies offer $4 or $10 generic medication programs. While Diltiazem ER may not always be on these lists, it's worth asking. Walmart, Kroger, and some other pharmacies maintain lists of low-cost generic medications.
If you're currently paying for brand-name Cartia XT, switching to the generic version (Diltiazem Hydrochloride Extended-Release Capsules) can save you $50-$150+ per fill. Talk to your doctor and pharmacist about making the switch — in most cases, the generic is therapeutically equivalent and will work the same way.
Even with insurance, copays can add up. Here are some options:
Cartia XT — especially in its generic form — is one of the more affordable blood pressure and angina medications available. Most patients can get a 90-day supply for under $40, and with discount cards, that number can drop even lower.
If cost is still a barrier, patient assistance programs like PAN Foundation, HealthWell Foundation, and Rx Outreach can help. And if you're paying more than you think you should, compare prices at multiple pharmacies — the difference can be significant.
For help finding Cartia XT at the best price near you, visit Medfinder. And for general information about your medication, see our posts on what Cartia XT is, side effects to watch for, and drug interactions to avoid.
You focus on staying healthy. We'll handle the rest.
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