Compare Precose vs. Janumet

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

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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.

3.4/ 5 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.
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Used for
Dosage forms
  • Pill
  • Pill
  • Extended release
Price
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Reviews
Not enough review data.Leave a review
79 reviews so far
46%
saidit'sworth it
38%
saiditworked well
15%
saidit'sa big hassle

Have you used Janumet (sitagliptin / metformin)?

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Side effects
3possible side effects
  • Excessive gas
    74%
  • Diarrhea
    31%
  • Stomach pain
    19%
See more detailed 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
Risks and risk factors
  • 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
    • 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