Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Januvia (sitagliptin) and Ozempic (semaglutide) are both medications used to treat Type 2 diabetes, but they belong to different drug classes. Januvia is a dipeptidyl peptidase-4 (DPP-4) inhibitor, while Ozempic is a glucagon-like peptide-1 (GLP-1) receptor agonist. Januvia is taken orally once a day, whereas Ozempic is injected under the skin once a week. Januvia is available in a generic form, but Ozempic only available as a brand-name medication. Common side effects of Januvia include a runny nose and headache, while Ozempic often causes nausea, vomiting, and diarrhea. Both medications can cause low blood sugar when taken with other diabetes medications. Ozempic also has additional FDA-approved indications for lowering the risk of heart attack, stroke, and death in adults with Type 2 diabetes and heart disease, while Januvia does not.
Januvia (sitagliptin)
Ozempic (semaglutide)
Januvia (sitagliptin)
Ozempic (semaglutide)
Summary of Januvia vs. Ozempic
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 GLP-1 agonist
Prescription only
Ozempic (semaglutide) is a GLP-1 agonist used with diet and exercise to help adults manage Type 2 diabetes. It can also lower the risk of heart attack, stroke, and heart-related death in some people with Type 2 diabetes. It comes as a once-weekly injection under the skin and as a tablet taken by mouth once a day. The injection is also approved to help slow worsening kidney problems in people with Type 2 diabetes and chronic kidney disease (CKD). Common side effects include nausea, vomiting, and diarrhea.