When You Can't Get Invokamet, You Still Have Good Options

If your pharmacy can't fill your Invokamet prescription — whether it's a stock issue, an insurance problem, or a cost concern — you're probably wondering what else is out there. The good news is that there are several effective alternatives that work the same way or very similarly to Invokamet.

Before making any changes, always talk to your doctor. Switching diabetes medications isn't something you should do on your own. But this guide will help you have an informed conversation about your options.

What Is Invokamet and How Does It Work?

Invokamet is a combination tablet that contains two active ingredients:

• Canagliflozin — an SGLT2 (sodium-glucose cotransporter 2) inhibitor that works in your kidneys. It blocks a protein that normally reabsorbs sugar back into your blood, causing excess glucose to be flushed out through your urine.
• Metformin — a biguanide that reduces the amount of sugar your liver makes and helps your body respond better to insulin.

Together, these two medications attack high blood sugar from different angles, which is why they're often prescribed together for type 2 diabetes. For a deeper dive, read our article on how Invokamet works.

Invokamet comes in both immediate-release (taken twice daily with meals) and extended-release forms (Invokamet XR, taken once daily). It's made by Janssen Pharmaceuticals and has been FDA-approved since 2014.

Why You Might Need an Alternative

There are several common reasons patients look for Invokamet alternatives:

• Pharmacy doesn't stock it: As a brand-name combination drug, not every pharmacy carries Invokamet regularly.
• Insurance won't cover it: Some plans require prior authorization, step therapy, or prefer a different combination.
• Cost is too high: Without insurance, Invokamet costs $575 to $800 per month. Even with insurance, copays can be significant.
• Side effects: Some patients may not tolerate one of the ingredients well. See our guide on Invokamet side effects.

Alternative 1: Synjardy or Synjardy XR (Empagliflozin/Metformin)

Synjardy is the closest competitor to Invokamet. It combines a different SGLT2 inhibitor — Empagliflozin (the active ingredient in Jardiance) — with Metformin.

Key facts about Synjardy:

• Available in immediate-release (twice daily) and XR (once daily) formulations
• Empagliflozin has strong cardiovascular outcome data — it was the first SGLT2 inhibitor to show reduced cardiovascular death in the EMPA-REG OUTCOME trial
• Does not carry the boxed warning for lower limb amputation that Invokamet has
• Similar side effect profile: yeast infections, UTIs, increased urination, dehydration
• Cash price is similar at roughly $550 to $750 per month
• May be preferred by some insurance plans over Invokamet

If your insurance prefers Synjardy or if you're concerned about the amputation risk associated with Canagliflozin, this is often the first alternative doctors recommend.

Alternative 2: Xigduo XR (Dapagliflozin/Metformin Extended-Release)

Xigduo XR combines Dapagliflozin (the active ingredient in Farxiga) with extended-release Metformin. It's taken once daily with the evening meal.

Key facts about Xigduo XR:

• Once-daily dosing for convenience
• Dapagliflozin has additional FDA approvals for heart failure and chronic kidney disease, making it a good choice for patients with those conditions
• No boxed warning for amputation risk
• Similar diabetes control compared to Invokamet
• Cash price ranges from $550 to $700 per month
• Extended-release formulation may cause fewer GI side effects from the Metformin component

Xigduo XR is a strong option if you prefer once-daily dosing or if you also have heart failure or kidney disease.

Alternative 3: Segluromet (Ertugliflozin/Metformin)

Segluromet combines Ertugliflozin (the active ingredient in Steglatro) with Metformin. It's the newest of the SGLT2/Metformin combinations.

Key facts about Segluromet:

• Taken twice daily with meals
• Ertugliflozin is a potent SGLT2 inhibitor but has less long-term cardiovascular outcome data than Empagliflozin or Dapagliflozin
• The VERTIS CV trial did not show a significant reduction in major cardiovascular events, though it did show heart failure benefits
• May be available at a lower cost or preferred by certain insurance formularies
• Similar side effect profile to other SGLT2/Metformin combinations

Alternative 4: Taking Canagliflozin (Invokana) + Generic Metformin Separately

If you want to keep the exact same active ingredients as Invokamet but can't find the combination tablet, your doctor can prescribe Invokana (Canagliflozin) and generic Metformin as separate pills.

Pros:

• Same medications, same doses — just in two separate tablets
• Generic Metformin is extremely affordable at $4 to $20 per month
• More flexibility in adjusting doses of each ingredient independently

Cons:

• You're taking more pills each day
• Brand-name Invokana still costs around $550 to $600 per month without insurance
• Some patients find it harder to stay consistent with a multi-pill regimen

How to Decide Which Alternative Is Right for You

Here are some questions to discuss with your doctor:

1. Does your insurance prefer a specific combination? Check your formulary or call your insurance company. You might save hundreds by switching to their preferred SGLT2/Metformin combination.
2. Are you concerned about the amputation risk? Canagliflozin (in Invokamet) carries a boxed warning for increased lower limb amputation risk. Empagliflozin and Dapagliflozin do not have this warning.
3. Do you have heart failure or kidney disease? Dapagliflozin (in Xigduo XR) has the broadest range of FDA approvals for these conditions.
4. Do you prefer once-daily dosing? Xigduo XR and Invokamet XR are both once-daily options.

For help finding your current or new medication, visit Medfinder to check pharmacy availability near you.

Final Thoughts

Not being able to fill your Invokamet prescription is frustrating, but it doesn't mean you're out of options. Several other SGLT2 inhibitor/Metformin combinations offer similar blood sugar control, and taking the two ingredients as separate pills is always an option.

Talk to your doctor about which alternative makes the most sense for your health, your insurance, and your budget. And if you'd rather stick with Invokamet, use Medfinder to track it down — you might find it at a pharmacy you haven't tried yet.