Compare metformin vs. glyburide

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

Glucophage (metformin)

Prescription only

Diabeta (glyburide)

Prescription only
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.

3.7/ 5 average rating with 938 reviewsformetformin
Lowers blood sugar.

Diabeta (glyburide) is a good oral anti-diabetic medicine, but can cause hypoglycemia or low blood sugar.

3.3/ 5 average rating with 110 reviewsforglyburide
Upsides
  • 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.
  • Available as an oral tablet.
  • Lowers your A1c (average blood sugar over time) up to 2%.
  • Available in generic version.
  • Available in single pill combination with other anti-diabetic medicines.
Downsides
  • 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.
  • More likely to cause hypoglycemia or low blood sugar than other types of oral anti-diabetics.
  • You will have to check your blood sugar often when you first start taking it.
  • Can cause weight gain (about 2 to 3 pounds).
  • Not ideal for elderly or those with poor kidney function.
  • May not work as well for those with severe diabetes and when pancreas cannot produce insulin.
Used for
Dosage forms
  • Pill
  • Extended release pill
  • Liquid
  • Pill
Price
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Reviews
938 reviews so far
65%
saidit'sworth it
46%
saiditworked well
16%
saidit'sa big hassle

Have you used Glucophage (metformin)?

Leave a review
110 reviews so far
45%
saidit'sworth it
34%
saiditworked well
21%
saidit'sa big hassle

Have you used Diabeta (glyburide)?

Leave a review
Side effects
7possible side effects
  • Diarrhea
    53%
  • Nausea/vomiting
    26%
  • Gas
    12%
  • Weakness
    9%
  • Indigestion
    7%
  • Stomach pain
    6%
  • Headache
    6%
See more detailed side effects
The Diabeta (glyburide) 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
See more detailed risks and warnings
  • Low blood sugar
    • Over age 65
    • Kidney problems
    • Use of other blood sugar lowering medicines
    • Alcohol
    • Intense physical activity
  • Severe allergic reactions
    • History of sulfa allergies
See more detailed risks and warnings