Compare Precose vs. Janumet

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

Precose (acarbose)

Prescription only
Lowers blood sugar.

Precose (acarbose) helps lower your post-mealtime blood sugar levels, but it must be taken at the beginning of each main meal in order for it to be most effective.

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
  • Precose (acarbose) helps control meal-time blood sugar levels without causing weight gain.
  • When used alone it doesn't normally cause blood sugar levels to be too low unlike other anti-diabetes medicines.
  • Safe to be used in people age 65 or older.
  • Has relatively few interactions with other 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
  • Not a first choice medicine because it isn't as effective at lowering blood sugar compared to other treatment options.
  • Associated with bothersome side effects like excessive gas and diarrhea.
  • Relatively more expensive than other diabetes medicines.
  • Has to be taken three times a day with each meal.
  • Might cause episodes of low blood sugar when taken together with insulin or medicines that stimulate insulin release.
  • 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
  • Pill
  • Pill
  • Extended release
Price
Lowest price near you
$28.25
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Lowest price near you
$415.3
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Reviews
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79 
46%
think this treatment is worth it
38%
think this treatment works well
15%
think this treatment is a hassle

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Side effects
3possible side effects
  • Excessive gas
    74%
  • Diarrhea
    31%
  • Stomach pain
    19%
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
  • Low blood sugar

    Using insulin or other medicines that stimulate insulin release

  • Kidney function

    Those with kidney problems

  • Interactions with other medicines

    Taking multiple medicines together

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