Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Trulicity (dulaglutide) and Januvia (sitagliptin) are both prescription medications used to treat Type 2 diabetes, but they work in different ways and are taken differently. Trulicity is a GLP-1 agonist that you inject once a week. It helps your body release more insulin, slows down digestion, and stops the release of extra sugar into your bloodstream. Trulicity also lowers the risk of major heart events in adults with Type 2 diabetes who have heart disease or risk factors for heart disease. On the other hand, Januvia is a DPP-4 inhibitor taken by mouth once daily. It works by blocking a protein that breaks down hormones responsible for insulin production, allowing insulin to stay in your body longer and reducing sugar production. Trulicity can cause side effects like nausea and stomach pain, while Januvia might cause a runny nose, sore throat, and headache. Trulicity is also linked to a risk of thyroid cancer and pancreatitis, whereas Januvia has warnings about potential kidney problems and severe joint pain.
Trulicity (dulaglutide)
Januvia (sitagliptin)
Trulicity (dulaglutide)
Januvia (sitagliptin)
Summary of Trulicity vs. Januvia
Summary for GLP-1 agonist
Prescription only
Trulicity (dulaglutide) is a glucagon-like peptide-1 (GLP-1) agonist that helps control blood sugar in people 10 years and older with Type 2 diabetes. It's also approved to lower the risk of heart problems like heart attacks, strokes, and heart-related death in certain adults with Type 2 diabetes. The medication is injected under the skin once a week. Common side effects include nausea, vomiting, diarrhea, and stomach pain. When taken with certain diabetes medications like insulin, there's a higher risk of low blood sugar (hypoglycemia).
Summary for DDP-4 inhibitor
Prescription only
Januvia (sitagliptin) is a prescription medication used along with a healthy diet and exercise to treat Type 2 diabetes. It belongs to the drug class dipeptidyl peptidase-4 (DPP-4) inhibitor, also known as gliptins. Januvia (sitagliptin) is taken by mouth, typically once daily. Most people don't experience many side effects from this medication, but possible ones include stuffy or runny nose, sore throat, and headache.
Indications of Trulicity vs. Januvia
Indications for
•Manage Type 2 diabetes in people 10 years and older, along with diet and exercise
•Lower the risk of heart problems like heart attack, stroke, or death in adults with Type 2 diabetes who have heart disease or heart-related risk factors