Head-to-head comparisons of medication uses, side effects, warnings, and more.
Foundayo (orforglipron)
Zepbound (tirzepatide)
Foundayo (orforglipron)
Zepbound (tirzepatide)
Summary of Foundayo vs. Zepbound
Summary for GLP-1 agonist
Prescription only
Foundayo (orforglipron) is an oral glucagon-like peptide-1 (GLP-1) receptor agonist. It's approved for weight loss in certain adults. This medication is meant to be used together with a reduced-calorie diet and exercise. Foundayo (orforglipron) comes as tablets and is taken by mouth once a day with or without food. The dose is slowly raised over several weeks. Common side effects include nausea, constipation, and diarrhea.
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.