Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Tirzepatide (Zepbound) and liraglutide (Victoza) are both injectable medications used to manage certain health conditions. They belong to the class of medications known as glucagon-like peptide-1 (GLP-1) agonists, which help control blood sugar levels and appetite. While both medications can aid in weight management, Zepbound is FDA-approved for weight loss and sleep apnea, whereas Victoza is approved for Type 2 diabetes and reducing heart-related risks in adults with diabetes. Zepbound is taken once a week, while Victoza is taken daily. Zepbound is a glucose-dependent insulinotropic polypeptide (GIP) and GLP-1 receptor agonist, while Victoza is solely a GLP-1 receptor agonist. Common side effects for both medications include nausea and diarrhea. Both medications carry a risk of thyroid cancer and pancreatitis, and they have similar interactions, which can include other diabetes medications, warfarin (Jantoven, Coumadin), and birth control pills. Zepbound is available only as a brand-name medication, while Victoza has a lower-cost generic available.
Zepbound (tirzepatide)
Victoza (liraglutide)
Zepbound (tirzepatide)
Victoza (liraglutide)
Summary of Zepbound vs. Victoza
Summary for GIP and GLP-1 agonist
Prescription only
Zepbound (tirzepatide) is an injectable medication that's used along with diet and exercise. It helps with weight loss in adults who meet criteria for weight management therapy. It's also approved to treat moderate-to-severe sleep apnea. This medication belongs to the drug class called GIP and GLP-1 agonists. The dosage is 1 injection under the skin once a week. Common side effects include nausea, diarrhea, and injection site reactions. Zepbound (tirzepatide) is only available as a brand-name medication.
Summary for GLP-1 agonist
Prescription only
Victoza (liraglutide) is a medication that's injected once a day. It helps lower blood sugar levels in people 10 years and older with Type 2 diabetes when used with a nutritious diet and regular exercise. It can also help lower the risk of heart-related problems in adults with Type 2 diabetes and heart disease. Victoza (liraglutide) belongs to the drug class called GLP-1 agonists. The medication comes as single-dose prefilled pens and is injected under the skin. It can cause side effects like nausea, vomiting, diarrhea, and constipation. Victoza (liraglutide) is available as both a brand-name and generic medication.