Compare Janumet vs. Onglyza

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

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Lowers your blood sugar.

Janumet is a combination of two anti-diabetic medicines that work better together, but is available as brand only.

3.4/ 5 average rating with 79 reviewsforJanumet
Lowers blood sugar.

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

Upsides
  • This 2-in-1 combination can lower the number of pills you have to take daily.
  • Lowers A1c (average blood sugar over time) up to 2.5%.
  • Available in extended and immediate release forms to allow better control of your blood sugar.
  • Doesn't increase your appetite unlike other anti-diabetic medicines.
  • Does not cause hypoglycemia or very low blood sugar.
  • 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.
Downsides
  • Available as brand name only and may be expensive.
  • Metformin component usually causes upset stomach.
  • Sitagliptin component may increase your risk for throat infections and inflammation of pancreas.
  • Not appropriate for those with poor kidney function.
  • 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.
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Used for
Dosage forms
  • Pill
  • Extended release
  • Pill
Price
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Reviews
79 reviews so far
46%
saidit'sworth it
38%
saiditworked well
15%
saidit'sa big hassle

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Side effects
5possible side effects
  • Low blood sugar
    16%
  • Diarrhea
    8%
  • Upper respiratory tract infection
    6%
  • Headache
    6%
  • Abdominal pain
    2%
See more detailed side effects
The Onglyza (saxagliptin) FDA package insert doesn’t have numbers about how common side effects are.
Risks and risk factors
  • Excess lactic acid in the blood
    • Kidney problems
    • Liver problems
    • Congestive heart failure
    • Using contrast dye for procedures
    • Surgery
    • Alcohol use
  • Low vitamin B12 levels
  • Inflammation of the pancreas
  • Serious allergic reactions
See more detailed risks and warnings
  • inflammation of the pancreas
    • Alcoholism
    • Elevated triglycerides
    • History of pancreatitis
    • Gallstones
  • Heart failure
    • History of heart failure
    • Bad kidney function
  • Low blood sugar (hypoglycemia)
    • Alcohol
    • Unexpected changes in diet
    • Changes in amount of exercise
    • Taking other anti-diabetic medications
  • Severe allergic reactions
  • Severe joint pain
  • Fluid-filled blisters on the skin (bullous pemphigoid)
See more detailed risks and warnings