Compare Invokana vs. metformin

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Invokana
(canagliflozin)

Glucophage
(metformin)

Lowers blood sugar. Invokana (canagliflozin) can be used together with other diabetes medicines to help lower your blood sugar, but it can be expensive because it's brand name.Lowers blood sugar. Glucophage (metformin) is the first choice medicine to control your blood sugar and lower the risk of death from diabetes, although a few people may not tolerate the stomach side effects.
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Coupons for Invokana
Best available price for 30 (300mg) tablets of invokana
Coupons for metformin
Best available price for 60 (500mg) tablets of metformin
Reviews & ratings
Filter group. All currently selected
Filter group. All currently selected
5.52Invokana
Reviews for Invokana
67%
of people (All ages) say Invokana is worth it
56%
say it works well
19%
say it's a big hassle
Have you used Invokana (canagliflozin)?
Worth itNot sureNot worth it
Reviews for metformin
65%
+2% better vs. Invokana
46%
+10% better vs. Invokana
16%
-3% worse vs. Invokana
938 reviews
Have you used Glucophage (metformin)?
Worth itNot sureNot worth it
Side effects
Invokanametformin
  • Yeast infection in women 8%
  • Urinary tract infections 2%
  • Increased urination 4%
  • Yeast infection in men 3%
  • Thirst 3%
  • Vaginal itching 2%
  • Constipation 1%
  • Abdominal pain 1%
More Invokana side effects »
  • Diarrhea 41%
  • Nausea/vomiting 18%
  • Gas 6%
  • Weakness 3%
  • Indigestion 3%
  • Stomach pain 1%
  • Headache 1%
More metformin side effects »
How it works
Invokanametformin
Invokana (canagliflozin) is an anti-diabetes medication. It lowers blood sugar by causing your body to get rid of sugar in your urine.Glucophage (metformin) is an anti-diabetic drug. It lowers the amount of sugar your body makes or absorbs, and allows your body use the existing insulin better.
Type of medication
Invokanametformin
Prescription onlyPrescription only
Available as
Invokanametformin
  • Pill
  • Pill
  • Extended release pill
  • Liquid
Used for
Invokanametformin
Risk factors for serious side effects
Invokanametformin
  • History of amputations 
  • Peripheral vascular disease (narrowed blood vessels)
  • Nerve problems
  • Diabetic foot ulcers 
  • History of kidney damage
Detailed Invokana (canagliflozin) risks & warnings »
  • Kidney problems
  • Liver problems
  • Congestive heart failure
  • Using contrast dye for procedures
  • Surgery
Detailed Glucophage (metformin) risks & warnings »
Pregnancy

Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

Research studies with animals haven’t found a risk to unborn babies, but it hasn’t been properly studied in humans.

Alcohol
Invokanametformin
  • Avoid if you are a heavy drinker of alcohol.
  • Excessive or chronic alcohol use can increase the risk of a dangerous side effect.
  • Limit or avoid alcohol when taking this medicine.
Food
Invokanametformin
  • You only have to take Invokana (canagliflozin) once a day before meals.
  • Take once daily before your first meal of the day.
  • Always take it with food to lessen stomach upset.
Kidneys and liver
Invokanametformin
  • Not for people with severe kidney problems.
  • Usually not a good choice for people with kidney problems. Your doctor will tell you if Glucophage (metformin) is right for you to take.
  • Glucophage (metformin) can cause this rare life-threatening condition. Your doctor will check your kidneys and liver before you start. Symptoms include deep and rapid breathing, nausea, vomiting, and stomach pain. This is a medical emergency and you should get help right away. You're more likely to get this if you already have kidney problems. Glucophage (metformin) should be stopped 48 hours before and after surgery or any imaging procedure needing contrast dye.
Pain
Invokanametformin
  • Rarely, Invokana (canagliflozin) can hurt the kidneys. This is more likely to happen if you already have kidney damage, heart failure, or take certain medicines for blood pressure or anti-inflammatories (NSAIDs). Invokana (canagliflozin) can also lower your blood pressure since it makes you urinate more. Your doctor will check your kidneys by blood tests regularly, and might ask you to change how you take Invokana (canagliflozin). Make sure to stay hydrated to prevent low blood pressure and kidney problems.
No pain related info.
Weight
Invokanametformin
No weight related info.
  • Doesn't cause weight gain.
Upsides and benefits
Invokanametformin
  • Lowers A1C (blood sugar) levels by 1%.
  • You only have to take Invokana (canagliflozin) once a day before meals.
  • Less likely to cause low blood sugar than other diabetes medicines.
  • Also available as a combination drug with metformin (Invokamet).
  • Improves sugar control and lowers A1c levels as much as 2%.
  • One of the few diabetes medicines that lowers the risk of death from diabetes-related complications.
  • Doesn't cause weight gain.
  • Rarely causes low blood sugar.
Downsides and risks
Invokanametformin
  • You're more likely to have broken bones, yeast infections and urinary tract infections with Invokana (canagliflozin).
  • There's a rare but serious risk of leg and foot amputations with Invokana (canagliflozin). Talk to your doctor if you develop new pain or infections in your feet.
  • Not for people with severe kidney problems.
  • Can raise your cholesterol.
  • Avoid if you are a heavy drinker of alcohol.
  • Often causes stomach upset, like diarrhea, nausea, gas, or stomach cramping.
  • Usually not a good choice for people with kidney problems. Your doctor will tell you if Glucophage (metformin) is right for you to take.
  • Excessive or chronic alcohol use can increase the risk of a dangerous side effect.
Tips from our pharmacists for people taking the medication
Invokanametformin
  • Take once daily before your first meal of the day.
  • Invokana (canagliflozin) can cause you to urinate more, so be sure to stay hydrated.
  • Can cause genital yeast infections in females and males.
  • Can cause urinary tract infections (UTI).
  • Can cause low blood sugar, so make sure to check your blood sugar if you don't feel well.
  • You should continue to exercise regularly, eat a healthy diet, and take your other diabetes medicines along with Invokana (canagliflozin).
  • Can cause upset stomach with nausea and especially diarrhea in the first couple of weeks.
  • Always take it with food to lessen stomach upset.
  • Stay hydrated.
  • Limit or avoid alcohol when taking this medicine.
  • Tell your doctor about any deep or rapid breathing, or persistent nausea, vomiting, and stomach pain.
  • Check your blood sugar regularly.
Learn more
More about InvokanaSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Invokana (canagliflozin)?
Worth itNot sureNot worth it
More about metforminSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Glucophage (metformin)?
Worth itNot sureNot worth it