Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Glipizide (Glucotrol XL) and Janumet (sitagliptin/metformin) are both used to treat Type 2 diabetes, but they have several differences between them. Glipizide helps lower blood sugar by prompting your pancreas to release more insulin. It is available in both immediate-release and extended-release forms, with the extended-release version taken once daily. On the other hand, Janumet combines two medications: sitagliptin and metformin. Sitagliptin helps insulin stay in your body longer, while metformin reduces the amount of sugar your liver releases and helps your body respond better to insulin. Janumet is taken either twice daily in its immediate-release form or once daily in its extended-release form. While glipizide can cause low blood sugar and weight gain, Janumet is less likely to cause these issues but carries risks like lactic acidosis and kidney problems. Additionally, glipizide is available as a lower-cost generic, whereas Janumet is not yet available in a generic form.
Glipizide
Janumet (sitagliptin / metformin)
Glipizide
Janumet (sitagliptin / metformin)
Summary of Glucotrol vs. Janumet
Summary for Sulfonylurea
Prescription only
Glipizide is a sulfonylurea medication used to treat Type 2 diabetes in adults. It lowers blood sugar levels by telling your pancreas to release more insulin. Glipizide is taken by mouth, typically once or twice daily. Some side effects of this medication include dizziness and diarrhea. Taking glipizide can also put you at risk for dangerously low blood sugar, so it's important to take this medication with meals.
Summary for DPP-4 inhibitor / Biguanide
Prescription only
Janumet (sitagliptin / metformin) is a medication for adults with Type 2 diabetes. It contains two different diabetes medications that work together to help control blood sugar. One is sitagliptin, a DPP-4 inhibitor, and the other is metformin, a biguanide. The Janumet immediate-release tablets are taken by mouth twice a day. It works best when used with a balanced meal plan and exercise routine. Some side effects are diarrhea, upper respiratory tract infection, and headache. There's only a brand-name version of Janumet; there's no generic version yet.