Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Januvia (sitagliptin) and Actos (pioglitazone) are both medications used to treat Type 2 diabetes, but they work in different ways and belong to different drug classes. Januvia is a DPP-4 inhibitor that helps increase insulin levels and reduce sugar production in your body, while Actos is a thiazolidinedione that improves your body's ability to use insulin. Januvia is typically taken once daily and doesn't usually affect body weight, whereas Actos can cause weight gain and may take several weeks to show its full effect. Actos has additional benefits like raising "good" cholesterol and lowering the risk of heart attack or stroke, but it also carries risks such as fluid build-up, bone fractures, and a potential increase in bladder cancer risk. Januvia, on the other hand, can cause severe joint pain and has a rare risk of causing pancreatitis and sudden kidney problems. Both medications can be taken with or without food.
Januvia (sitagliptin)
Pioglitazone (Actos)
Januvia (sitagliptin)
Pioglitazone (Actos)
Summary of Januvia vs. Actos
Summary for DDP-4 inhibitor
Prescription only
Januvia (sitagliptin) is a prescription medication that helps lower blood sugar in adults with Type 2 diabetes. It works best when you also follow a balanced diet and exercise regularly. It belongs to the drug class called dipeptidyl peptidase-4 (DPP-4) inhibitors, or gliptins. Januvia (sitagliptin) comes as a tablet you take by mouth once a day. Side effects include stuffy or runny nose and headache. Januvia (sitagliptin) is a brand-name medication only; the generic version isn't available yet.
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.