Compare metformin vs. Victoza

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

ADVERTISEMENT

Glucophage (metformin)

Prescription only

Victoza (liraglutide)

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 your blood sugar.

Victoza (liraglutide) is a medicine you inject once a day to control diabetes, but it can be expensive.

4.7/ 5 average rating with 22 reviewsforVictoza
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.
  • Lowers A1c (average blood sugar over time) up to 1.5%.
  • Helps with weight loss and controls appetite.
  • Only medicine in this class with proven heart health benefits.
  • No limitation for people with kidney problems, but close monitoring is recommended.
  • Medicine is ready to use, without need to mix.
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.
  • Only available as an injection.
  • Brand name medicine and can be expensive.
  • Compared to other similar medicines, you have to inject this every day.
ADVERTISEMENT
Used for
Dosage forms
  • Pill
  • Extended release pill
  • Liquid
  • Injection
Price
Want to save even more money?
Sign up now for a 30-day trial and save up to 95% at CVS, Kroger, Albertsons, and other pharmacies.
Learn more
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
22 reviews so far
73%
saidit'sworth it
91%
saiditworked well
27%
saidit'sa big hassle

Have you used Victoza (liraglutide)?

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
2possible side effects
  • Low blood sugar - self-treatable
    27%
  • Injection site reactions
    2%
See more detailed side effects
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
  • Thyroid cancer
    • History of MTC
    • History of MEN 2
  • inflammation of pancreas (pancreatitis)
    • History of pancreatitis
    • History of gallstones
    • alcoholism
    • Elevated triglycerides
  • Severe allergic reactions
  • Kidney damage
    • Kidney problems
    • dehydration
  • Low blood sugar (hypoglycemia)
    • Use of insulin(s)
    • Use of insulin-secreting medicines.
  • Severe stomach problems
    • Stomach or digestive tract disease
    • Gastroparesis
See more detailed risks and warnings