Compare Lantus vs. Janumet

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

Lantus (Insulin Glargine)

Prescription only
Lowers blood sugar.

Lantus (Insulin Glargine) is a long-acting insulin that provides all-day sugar control. It can cause low blood sugar, so make sure you know what the symptoms are and always have a source of sugar nearby.

5.1/ 7 average rating with 584 reviewsforLantus
Lowers your blood sugar.

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

4.5/ 7 average rating with 79 reviewsforJanumet
Upsides
  • Insulin is the most effective blood sugar-lowering medicine. When used correctly, it'll lower blood sugar every time you use it and prevent the harmful effects of high sugar levels on your organs and blood vessels.
  • Lantus is a long-lasting insulin that provides consistent, all-day sugar control with less risk of low blood sugar.
  • Dose can be easily adjusted to make a customized regimen that's tailored to your body.
  • Starting insulin early in the treatment of Type 2 diabetes can maintain your body's insulin-producing cells and slow down disease progression.
  • Okay to use even if you have liver or kidney problems, unlike most other blood sugar-lowering medicines.
  • 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.
Downsides
  • You have to take insulin by injection.
  • You have to check your blood sugar every day.
  • Likely to cause moderate weight gain (around 4 to 6 pounds).
  • Higher risk of low blood sugar episodes than other kinds of diabetes medicines.
  • 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.
Used for
Dosage forms
  • Injection
  • Pill
  • Extended release
Price
Lowest price near you
$389.68
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Lowest price near you
$415.3
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Reviews
584 
67%
think this treatment is worth it
51%
think this treatment works well
14%
think this treatment is a hassle

Have you used Lantus (Insulin Glargine)?

Leave a review
79 
46%
think this treatment is worth it
38%
think this treatment works well
15%
think this treatment is a hassle

Have you used Janumet (sitagliptin / metformin)?

Leave a review
Side effects
2possible side effects
  • Angiopathy
    7%
  • Injection site pain
    3%
See more detailed side effects
The Janumet (sitagliptin / metformin) FDA package insert doesn’t have numbers about how common side effects are.
Risks and warnings
  • Life-threatening low blood sugar (Hypoglycemia)

    Insulin dose too high

    ...and 4 more risk factors

  • Complications due to low potassium

    Use of other medicine that lowers potassium

    ...and 1 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