Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Metformin and glyburide/metformin are both used to manage type 2 diabetes, but they have some key differences. Metformin lowers blood sugar by reducing the amount of sugar your body makes and absorbs, and by helping your body use insulin better. Glyburide/metformin combines metformin with glyburide, which stimulates your pancreas to release more insulin. This combination can be more effective at lowering blood sugar than metformin by itself, but it has a higher risk of making blood sugar too low (hypoglycemia). On the other hand, metformin alone rarely causes low blood sugar. Both medications can cause stomach side effects and should be taken with meals to avoid stomach upset. Additionally, excessive alcohol use can increase the risk of a serious side effect called lactic acidosis for both medications. Glyburide/metformin isn’t recommended for people with severe kidney or liver problems, and has a higher risk of causing heart problems compared to metformin alone.
Metformin
Glyburide/metformin
Metformin
Glyburide/metformin
Summary of Metformin vs. Glucovance
Summary for Biguanide
Prescription only
Immediate-release metformin is an oral diabetes medication. It's approved for people 10 years of age and older with Type 2 diabetes. The medication belongs to the drug class called biguanides. It works best to lower blood sugar levels with a diabetes-friendly diet and exercise plan. Immediate-release metformin comes as a tablet and an oral solution. You take this medication by mouth usually two to three times a day. It's recommended to take each dosage with food to help lessen side effects like diarrhea and nausea.
Summary for Sulfonylurea / Biguanide
Prescription only
Glyburide/metformin is used to manage blood sugar levels in adults with Type 2 diabetes. It works best when taken with a healthy diet and regular exercise. This medication combines a sulfonylurea (glyburide) and a biguanide (metformin). You take it by mouth, typically once or twice daily with meals. Since glyburide/metformin can cause hypoglycemia (low blood sugar), it's important to carry fast-acting sugars like gummy candy or fruit juice to quickly raise your blood sugar if needed. Other common side effects include diarrhea, headache, and nausea. Brand name Glucovance has been discontinued.