Compare Onglyza vs. metformin

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

Onglyza (saxagliptin)

Prescription only

Glucophage (metformin)

Prescription only
Lowers blood sugar.

Onglyza (saxagliptin) can cause heart failure unlike other medicines that work just like it.

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.

5.0/ 7 average rating with 938 reviewsformetformin
Upsides
  • DRUG-NAME is an oral blood sugar lowering medicine. It's a good option if you don't like injections.
  • Does not cause weight gain.
  • May be a good option for those with bad liver function.
  • Does not cause hypoglycemia (low blood sugar) when taken by itself.
  • 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
  • Typically not first-choice treatment for diabetes.
  • Only lowers A1C (average blood sugar over time) by ~0.5%.
  • Risk for heart failure has not been seen in other medicines that work just like it.
  • May be more expensive than other anti-diabetic medicines.
  • 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.
Used for
Dosage forms
  • Pill
  • Pill
  • Extended release pill
  • Liquid
Price
Lowest price near you
$402.35
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$4
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Reviews
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938 
65%
think this treatment is worth it
46%
think this treatment works well
16%
think this treatment is a hassle

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Side effects
The Onglyza (saxagliptin) FDA package insert doesn’t have numbers about how common side effects are.
7possible side effects
  • Diarrhea
    53%
  • Nausea/vomiting
    26%
  • Gas
    12%
  • Weakness
    9%
  • Indigestion
    7%
  • Stomach pain
    6%
  • Headache
    6%
See more detailed side effects
Risks and warnings
  • inflammation of the pancreas

    Alcoholism

    ...and 3 more risk factors

  • Heart failure

    History of heart failure

    ...and 1 more risk factors

  • Low blood sugar (hypoglycemia)

    Alcohol

    ...and 3 more risk factors

See more detailed risks and warnings
  • Excess lactic acid in the blood

    Kidney problems

    ...and 5 more risk factors

See more detailed risks and warnings