Two medications, the same drug class, the same condition. If your doctor puts you on one while someone you know takes the other, it’s fair to wonder what actually separates them.
Both treat type 2 diabetes. Both belong to a family called SGLT2 inhibitors. On paper they can look nearly interchangeable, but the differences are real, and they matter more for some people than others.
These questions come up a lot, because diabetes is common. As of 2023, an estimated 40.1 million people in the United States were living with it, according to the CDC. When a condition is that widespread, the small distinctions between two familiar drugs become worth understanding.
Here’s what sets these two apart, from how they work to what they cost, and what you can do if that cost turns out to be more than you can handle.
What They Have in Common
Start with the shared ground, because there’s plenty of it.
Both are once-daily pills. Both lower blood sugar the same way, by blocking a protein in your kidneys that would otherwise hold onto glucose and send it back into your blood. The extra sugar leaves through your urine instead.
Both are indicated for the treatment of type 2 diabetes, and neither should be used for type 1 diabetes.
They also do more than manage glucose. Each one has been shown to protect the heart and kidneys, which is no small thing for people with diabetes, since those are the areas the disease tends to wear down over time.
So the real question was never which one lowers blood sugar. They both do that well, but it’s where they split off that counts.
How Jardiance and Invokana Differ
The clearest difference is what’s inside them. Jardiance is empagliflozin. Invokana is canagliflozin.
Same family, slightly different chemistry, and it shows up most in what each is approved to do beyond controlling glucose.
Jardiance is the one known for the treatment of heart failure in addition to diabetes. It’s approved to lower the risk of cardiovascular death in adults who have type 2 diabetes alongside heart disease, and it’s also used to treat heart failure and to slow chronic kidney disease, even in people without diabetes.
Invokana carries its own kidney and heart approvals, and has been shown to reduce Major Cardiovascular Events (MACE) like CV death, nonfatal MI, nonfatal stroke in patients with type 2 diabetes and cardiovascular disease. It also reduced the risk of worsening kidney disease in patients with type 2 diabetes.Â
Here’s the quick version.
Feature | Jardiance | Invokana |
Active ingredient | Empagliflozin | Canagliflozin |
Drug class | SGLT2 inhibitor | SGLT2 inhibitor |
Form | Daily oral tablet | Daily oral tablet |
Known for | Heart failure, cardiovascular protection, CKD | Diabetic kidney disease, cardiovascular risk |
With so much overlap, the choice usually comes down to which of those added benefits fits your health.
How Each One Is Taken
The daily routine looks similar for both, with a few small differences worth knowing.
Jardiance is taken once in the morning, with or without food, which gives you some freedom in how it fits your day. Most people start on a lower dose, and a doctor can raise it later if blood sugar needs more help coming down.
Invokana asks for a little more timing. It’s usually taken before the first meal of the day, and like Jardiance, it tends to start low with room to increase.
Kidney function shapes the dose for both. Because these drugs work through your kidneys, how well those kidneys are filtering affects how much you can safely take, and in some cases whether the drug is a fit at all. That’s one of the reasons your doctor checks kidney function before starting either one and keeps an eye on it afterward. It isn’t a formality. It’s how the dose gets matched to your body.
Does One Work Better Than the Other?
People ask this constantly. The honest answer won’t crown a winner.
At the core of its job, which is to lower blood sugar, the two land in about the same place. Neither pulls clearly ahead, and if glucose control were the only thing on the table, you could reasonably flip a coin.
The reason that’s not the whole story is that these drugs were studied for more than their effect on blood sugar. Large trials looked at what happens to the heart and kidneys over years of use, and that’s where the two build slightly different reputations. Jardiance gathered strong evidence around heart failure. Invokana built its case around slowing kidney disease in people with diabetes.
So “better” turns into a question about you rather than the drug. What matters most in your health, today and down the road, is what decides which one earns the edge. For one person that’s the heart. For another it’s the kidneys. The medicine that fits your situation is the one aimed at the problem you’re most trying to get ahead of.
Who Tends to Lean Toward Which
None of this replaces your doctor’s judgment, but a few patterns show up often enough to be worth naming.
Someone managing type 2 diabetes alongside heart failure, or at high risk for it, is often pointed toward Jardiance, since its heart-failure evidence is part of why the drug is so widely prescribed.
Someone whose diabetes has started to affect the kidneys may find Invokana the more natural fit, given its particular track record in diabetic kidney disease.
For plenty of people, neither concern is dominant yet. When the main goal is simply steady blood sugar control, the decision often comes down to other things entirely: how your body tolerates one over the other, what your insurance prefers, and what your doctor has seen work. There’s no wrong door in that case, just the one that fits you best right now.
Side Effects and Safety
Same mechanism, so mostly the same side effects.
The common ones follow from how these drugs work. Flushing sugar out through urine makes infections more likely and can leave you low on fluid. Expect the possibility of:
- Genital yeast infections (10% women and 2-3% men)
- More frequent urination
- Dehydration or lightheadedness, especially at first
Most of it stays manageable. Drink enough water and the fluid issues ease; the infections, unpleasant as they are, respond to treatment. It’s also important to note that women get yeast and urinary infections more often than men.
One rarer thing is worth knowing about. A type of diabetic ketoacidosis (DKA) can develop even when your blood sugar looks normal, and the warning signs are nausea, vomiting, abdominal pain, confusion, and unusual fatigue. Those call for prompt care, not a wait-and-see. Triggers for euglycemic DKA include acute illness, fasting, insulin dose reduction, and surgery.
Invokana has a specific risk of lower-limb amputations and bone fractures. It also has a slightly lower risk of genital infections, but if a UTI develops it may be more severe.
What They Cost
Neither is cheap without insurance.
Both are brand-name, with no low-cost generic to bring the price down, which means the monthly cost stays high. What you actually pay depends on your coverage. Some plans favor one over the other and drop it to a lower tier, which can swing your out-of-pocket cost quite a bit depending on which one you’re handed.
That’s worth knowing before you assume the two cost the same. Even solid coverage doesn’t reach everyone, though. Plenty of people find the preferred drug still sits past what they can comfortably pay, and that’s where it helps to know what other help exists.
Talk to Your Doctor
Switching between two drugs in the same class sounds minor. It’s still a medical decision, and not one to make on your own.
Your doctor sees the whole picture: your history, your other medications, which of your health concerns should carry the most weight. Money belongs in that conversation as much as anything clinical, because a medication only helps if you can actually stay on it. If affording one of these is a real strain, say so plainly.Â
There are usually more paths forward than people realize.
Getting Help With Medication Costs
Cost is what pushes a lot of people off the medication that was working for them. That’s the exact problem The Rx Advocates exists to fix.
Both Jardiance and Invokana are brand-name drugs, meaning each one can potentially be covered through a patient assistance program. These come straight from the drug manufacturers, and for people who qualify, they supply the medication at no cost.
The trouble is that they’re a slog to apply for. Forms, documentation, follow-up that drags on until people give up before any benefit arrives. That’s the part we take off your hands.
We prepare the application with your doctor, send it to the manufacturer, keep tabs on it through review, and once you’re approved, keep your refills coming so nothing lapses. For that, we charge a flat monthly service fee based only on how many medications you need help with:
Medications | Monthly fee |
1 medication | $80 / month |
2 medications | $90 / month |
3 medications | $100 / month |
4 medications | $110 / month |
A one-time $35 fee gets you enrolled. Two things to know going in: these programs are for brand-name medications rather than generics, and having insurance doesn’t automatically count you out.
To see where you stand, call (844) 831-7090, email [email protected], or contact us online.