Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Glipizide/metformin (formerly known as Metaglip) and Actos (pioglitazone) are used to treat type 2 diabetes. Both medications help lower your blood sugar, but they have several differences between them. Glipizide/metformin is a combination of two medications: glipizide, a sulfonylurea that stimulates insulin release from the pancreas, and metformin, a biguanide that reduces sugar production and absorption while improving insulin sensitivity. Pioglitazone, on the other hand, is a thiazolidinedione that improves the body's response to insulin. Glipizide/metformin must be taken with meals to avoid low blood sugar, while pioglitazone can be taken with or without food. Pioglitazone may take several weeks to show its full effect, while glipizide/metformin starts working within 30 minutes. Additionally, pioglitazone has an increased risk of bladder cancer and fluid build-up, which can worsen or cause heart failure. Serious side effects of glipizide/metformin include an increased risk of lactic acidosis and low vitamin B12 levels
Glipizide/metformin
Pioglitazone (Actos)
Glipizide/metformin
Pioglitazone (Actos)
Summary of Metaglip vs. Actos
Summary for Sulfonylurea / Biguanide
Prescription only
Glipizide/metformin combines two diabetes medications into one tablet: glipizide (a sulfonylurea) and metformin (a biguanide). It's approved to treat Type 2 diabetes in adults along with diet and exercise. This medication is typically taken by mouth once or twice a day. Some common side effects of glipizide/metformin can include diarrhea and headache; it isn't likely to cause weight gain or weight loss.
Summary for Thiazolidinedione
Prescription only
Pioglitazone (Actos) is an oral medication used to treat Type 2 diabetes in adults, along with diet and exercise. It's a thiazolidinedione, which works by helping your body respond better to insulin. This medication is taken by mouth once a day and is available in both brand and generic forms. Side effects include headache, swelling in the body, and weight gain. There's also a serious warning that it can cause or worsen heart failure.