Alternatives to Janumet If You Can't Fill Your Prescription

Can't Get Janumet? Here Are Your Options

If you've been trying to fill your Janumet prescription and keep hitting a wall — whether it's out of stock, too expensive, or not covered by your insurance — you're not alone. Many patients with type 2 diabetes face this frustration.

The important thing is not to skip your medication. Uncontrolled blood sugar can lead to serious health problems over time. Instead, talk to your doctor about these real alternatives to Janumet that work in similar ways.

What Is Janumet and How Does It Work?

Janumet is a combination medication that contains two active ingredients:

• Sitagliptin — a DPP-4 inhibitor that helps your body produce more insulin after meals and reduces the amount of sugar your liver makes
• Metformin — a biguanide that decreases glucose production in the liver and improves your body's sensitivity to insulin

Together, these two drugs attack high blood sugar from multiple angles, making Janumet an effective option for many people with type 2 diabetes. It's taken twice daily with meals (or once daily for the extended-release version, Janumet XR).

For a more detailed explanation, see our article on how Janumet works.

Why You Might Need an Alternative

There are several common reasons patients look for alternatives to Janumet:

• Availability: Your pharmacy may be out of stock due to supply chain issues. Read more about why Janumet is hard to find.
• Cost: Without insurance, Janumet costs $600 to $750 per month. Even with insurance, copays can be high.
• Insurance coverage: Your plan may prefer a different DPP-4 inhibitor/Metformin combination.
• Side effects: Some patients don't tolerate Janumet well and need a different option. Learn about Janumet side effects.

Alternative #1: Jentadueto (Linagliptin/Metformin)

Jentadueto combines Linagliptin (a DPP-4 inhibitor) with Metformin — the same class of combination as Janumet. It works in essentially the same way: Linagliptin increases incretin hormones to boost insulin production, while Metformin reduces liver glucose output.

Key differences from Janumet:

• Linagliptin does not require dose adjustment for kidney function, which can be an advantage for patients with mild to moderate kidney disease
• Available as Jentadueto (twice daily) and Jentadueto XR (once daily)
• Made by Boehringer Ingelheim/Eli Lilly
• May be preferred by some insurance plans, especially if they have a lower tier for Linagliptin

Alternative #2: Kombiglyze XR (Saxagliptin/Metformin ER)

Kombiglyze XR pairs Saxagliptin (a DPP-4 inhibitor) with extended-release Metformin in a once-daily tablet. Like Janumet, it helps control blood sugar by increasing insulin production and reducing liver glucose output.

Key differences from Janumet:

• Once-daily dosing (compared to Janumet's twice-daily dosing)
• Uses extended-release Metformin, which may cause fewer GI side effects for some patients
• Made by AstraZeneca
• Some studies have raised questions about a possible increased risk of heart failure with Saxagliptin — discuss this with your doctor

Alternative #3: Kazano (Alogliptin/Metformin)

Kazano combines Alogliptin (a DPP-4 inhibitor) with Metformin. It's another medication in the same class as Janumet and works through the same mechanisms.

Key differences from Janumet:

• Taken twice daily with meals, similar to Janumet
• Made by Takeda Pharmaceuticals
• May have a different copay or tier on your insurance formulary
• Alogliptin is also available as a standalone drug (Nesina) or combined with Pioglitazone (Oseni)

Alternative #4: Taking Sitagliptin and Metformin Separately

If you specifically want the same active ingredients as Janumet, your doctor can prescribe Sitagliptin (sold as Januvia) and Metformin as separate tablets. This approach has some advantages:

• Metformin is available as an inexpensive generic — often $4 to $10 per month at many pharmacies
• You can adjust the dose of each component independently
• Metformin may be easier to find in stock since it's one of the most widely prescribed drugs in the world

The downside is that Januvia (Sitagliptin alone) is still a brand-name drug without a generic, so it can be expensive — around $500 to $600 per month without insurance. However, Merck's savings card may help with the cost.

Other Diabetes Medication Classes to Consider

If your doctor thinks a completely different approach might work better, there are other medication classes for type 2 diabetes:

• SGLT2 inhibitors + Metformin: Combinations like Synjardy (Empagliflozin/Metformin) or Xigduo XR (Dapagliflozin/Metformin) work differently by helping your kidneys remove excess sugar through urine
• GLP-1 receptor agonists: Injectable medications like Ozempic (Semaglutide) or Trulicity (Dulaglutide) can be very effective and may also help with weight loss
• Metformin + a sulfonylurea: Combinations like Glucovance (Glyburide/Metformin) are available as generics and are much less expensive, though they carry a higher risk of low blood sugar

Your doctor can help determine which option is the best fit based on your health history, kidney function, insurance coverage, and blood sugar goals.

Final Thoughts

Not being able to fill your Janumet prescription is frustrating, but it doesn't mean you have to go without treatment. Several medications in the same class can provide similar blood sugar control, and your doctor can help you find the right one.

Before making any changes, always talk to your healthcare provider. They can review your medical history, check for drug interactions, and make sure the alternative is safe and effective for you.

In the meantime, you can use Medfinder to search for pharmacies that have Janumet in stock — it might save you the switch altogether.