Compare glyburide vs. metformin

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

Diabeta (glyburide)

Prescription only

Glucophage (metformin)

Prescription only
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
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
Upsides
  • 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.
  • 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.
Downsides
  • 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.
  • 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.
Used for
Dosage forms
  • Pill
  • Pill
  • Extended release pill
  • Liquid
Price
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Reviews
110 reviews so far
45%
saidit'sworth it
34%
saiditworked well
21%
saidit'sa big hassle

Have you used Diabeta (glyburide)?

Leave a review
938 reviews so far
65%
saidit'sworth it
46%
saiditworked well
16%
saidit'sa big hassle

Have you used Glucophage (metformin)?

Leave a review
Side effects
The Diabeta (glyburide) FDA package insert doesn’t have numbers about how common side effects are.
7possible side effects
  • Diarrhea
    53%
  • Nausea/vomiting
    26%
  • Gas
    12%
  • Weakness
    9%
  • Indigestion
    7%
  • Stomach pain
    6%
  • Headache
    6%
See more detailed side effects
Risks and risk factors
  • 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
  • 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