Metformin/Sitagliptin (Janumet) can cost over $700/month. Here's how to save with coupons, discount cards, and patient assistance programs in 2026.
If you've seen the price tag on Metformin/Sitagliptin, you know it can be a shock. Brand-name Janumet costs between $550 and $730 per month without insurance — that's roughly $12 per tablet. Even the authorized generic version (Zituvimet) can run $350 to $475 at retail.
But here's the good news: almost nobody should be paying full price. Between manufacturer savings cards, pharmacy coupons, patient assistance programs, and other strategies, there are real ways to bring the cost down significantly. This guide walks you through all of them.
Let's start with the baseline. Here's what you'd pay at retail without any insurance or discounts in 2026:
These prices vary by pharmacy and location. That's why shopping around — and using the right tools — matters so much.
Pharmacy discount cards can dramatically reduce what you pay, even if you have no insurance. Here are the best options for Metformin/Sitagliptin:
GoodRx is one of the most widely used pharmacy coupon services. For the authorized generic Sitagliptin/Metformin (Zituvimet), GoodRx prices start at approximately $109 for 30 tablets (50 mg/500 mg strength). Prices vary by pharmacy, so compare several locations on their website or app.
SingleCare offers competitive pricing on Metformin/Sitagliptin. Discounted prices are comparable to GoodRx and can sometimes be lower at specific pharmacies. SingleCare coupons are accepted at most major chains including CVS, Walgreens, and Walmart.
Optum Perks (formerly SearchRx) provides free coupons that work at over 64,000 pharmacies. Check their website for current Metformin/Sitagliptin pricing near you.
Additional options worth checking include:
Pro tip: Prices on these services change frequently. Check 2–3 different coupon services before filling your prescription, and compare prices at multiple pharmacies. The cheapest option can vary from month to month.
If you have commercial insurance (not Medicare, Medicaid, or Tricare), the Merck Savings Card is one of the best deals available. Here's how it works:
This is a significant savings — if your copay is normally $60, you'd pay just $5. This card is worth using even if your insurance already covers the drug, as long as your copay is above $5.
Important: The Merck Savings Card is not valid for patients with government-funded insurance (Medicare Part D, Medicaid, TRICARE, VA). Those patients should explore the patient assistance program below.
If you are uninsured and cannot afford your medication, Merck Helps (merckhelps.com/JANUMET) provides Janumet completely free of charge. Here's what you need to know:
Patient assistance programs often take 2–4 weeks to process, so apply as soon as possible. Your doctor's office can usually help with the paperwork.
Beyond Merck's own program, these organizations help connect patients with medication assistance:
These resources are especially valuable if you have insurance but still face high out-of-pocket costs through copays or deductibles.
Zituvimet is the authorized generic of Janumet — same manufacturer (Merck), same active ingredients, same strengths. But it's typically priced lower than brand Janumet. Ask your pharmacist if Zituvimet is available and compare the cost. With coupons, Zituvimet can be as much as $400–$600 less per month than brand Janumet at retail.
If the combination tablet is too expensive, your doctor may prescribe the two drugs as separate pills:
Talk to your doctor about whether this approach makes sense for your situation.
Many insurance plans offer a 90-day supply through mail-order pharmacy at a lower per-unit cost than filling monthly at a retail pharmacy. Check with your insurance to see if this option is available — it can save both money and trips to the pharmacy.
Prices for the same medication can vary dramatically between pharmacies — sometimes by hundreds of dollars. Use Medfinder to find pharmacies that have Metformin/Sitagliptin in stock, and check GoodRx or SingleCare to compare prices at each location before choosing where to fill.
If you're on Medicare Part D, you may qualify for the Extra Help/Low-Income Subsidy (LIS) program, which significantly reduces prescription costs. Contact Medicare at 1-800-MEDICARE or visit medicare.gov to check eligibility.
Metformin/Sitagliptin doesn't have to break the bank. Whether you use the Merck Savings Card ($5 copay for insured patients), pharmacy coupons (as low as $109/month for the generic), or the Merck Helps program (free for qualifying uninsured patients), there are real savings available.
The key is to explore your options before you fill. Check coupon prices, ask about the authorized generic, and apply for assistance programs if you need them. Your diabetes medication is too important to skip because of cost.
Need to find a pharmacy with Metformin/Sitagliptin in stock? Visit Medfinder to check availability near you.
You focus on staying healthy. We'll handle the rest.
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