Januvia Shortage Update: What Patients Need to Know in 2026

If you're a Januvia (sitagliptin) patient wondering about the drug's current availability, here's the bottom line up front: Januvia is not in an active FDA-listed shortage in 2026. Supply from Merck is sufficient. However, that doesn't mean every patient can easily access it — and understanding why can help you plan ahead.

Current Januvia Shortage Status (2026)

As of 2026, Januvia is NOT listed in the FDA Drug Shortage Database. Merck continues to manufacture and distribute sitagliptin tablets in all three strengths — 25 mg, 50 mg, and 100 mg. Most major retail pharmacy chains (CVS, Walgreens, Walmart, Rite Aid) carry Januvia in stock.

The access barriers most patients encounter are not due to a manufacturing shortage but rather:

Cost: $600–$700/month retail without insurance, with no widely available true generic yet

Insurance barriers: Prior authorization requirements, step therapy policies, and high copays

Local inventory: Smaller pharmacies may not routinely stock Januvia due to its high cost and lower turnover

History: What Happened to Januvia Supply Before?

In 2022, the FDA discovered the presence of nitrosamine impurities — specifically Nitroso-STG-19 (NTTP) — in some sitagliptin drug samples. Nitrosamines are potentially cancer-causing compounds that have been found in several widely-used medications in recent years, including certain blood pressure drugs and heartburn medications. The discovery raised concerns and triggered quality reviews.

In response, Zydus Pharmaceuticals brought Zituvio (sitagliptin free base) to market in October 2023 — a formulation specifically developed to be free from NTTP contamination. Merck also implemented corrective measures in its Januvia manufacturing process. The contamination issue has since been resolved, and current Januvia inventory on pharmacy shelves meets FDA safety standards.

Is a Future Januvia Shortage Possible?

Any single-manufacturer brand-name drug carries inherent supply risk. If Merck experienced a significant manufacturing disruption, Januvia supply could be affected. However, with Zituvio as an alternative source of sitagliptin and generic entry anticipated in 2026, the market is becoming less dependent on a single source. The sitagliptin patent expires November 24, 2026, and settlement agreements allow generic manufacturers into the market as early as May 2026.

What Should Januvia Patients Do Right Now?

Even though there's no formal shortage, proactive patients are better prepared. Here's what to do:

Fill early and don't run out. Refill when you have 7–10 days remaining. This gives you a buffer to solve any filling problems.

Know your savings options. If cost is your barrier, Merck's savings card (up to $150 off per fill for commercially insured patients) and the Merck Patient Assistance Program (for uninsured/low-income patients) can dramatically reduce what you pay.

Consider 90-day supplies. Mail-order pharmacies affiliated with your insurance often offer 90-day supplies at a lower per-dose cost and better availability.

Ask about Zituvio. If Januvia is unavailable or too expensive, ask your doctor about a prescription for Zituvio (sitagliptin free base), which may be cheaper at certain pharmacies.

Discuss alternatives with your doctor. If access remains consistently difficult, talk to your provider about other medications in the same class (Tradjenta, generic saxagliptin) or other diabetes drug classes.

What to Expect as Generics Enter the Market

Once generic sitagliptin phosphate is widely available — expected in 2026 — the landscape for Januvia patients will improve significantly. Prices are expected to fall 80–85%, potentially down to $50–$100 per month. Multiple manufacturers producing the drug also reduces the risk of any single supply disruption.

How medfinder Can Help You Find Januvia

Whether there's an official shortage or not, finding a specific drug at a specific pharmacy isn't always easy. medfinder calls pharmacies in your area on your behalf to check which ones can fill your Januvia prescription. You provide the medication details and your location — we handle the calls and text you the results. It's a fast, practical way to locate your medication without spending hours on hold.

For a full step-by-step guide, see: How to Find Januvia in Stock Near You (Tools + Tips for 2026).