Wegovy vs. Zepbound: Comparing Your Options

Wegovy vs. Zepbound: The Two Brand Names

Wegovy and Zepbound are the brand names for the two leading GLP-1 weight-loss medications: Wegovy is semaglutide, and Zepbound is tirzepatide. If you have already narrowed your choice to "a GLP-1," the brand-name question is really about which drug your insurance covers and which your provider prescribes most. If you are here looking into weight management clinic, the detail below covers scope, timing and what to check before you commit.

How they compare

• Mechanism: Wegovy targets the GLP-1 receptor only. Zepbound targets both GLP-1 and GIP receptors, which is believed to drive its larger average results.
• Average weight loss: ~15% for Wegovy vs. ~20–22% for Zepbound in their respective registration trials (STEP and SURMOUNT).
• Dosing: Both are once-weekly injections with gradual dose escalation; Wegovy tops out at 2.4 mg, Zepbound at 15 mg.
• Side effects: The profiles are similar (nausea, GI upset), with Zepbound's higher efficacy accompanied by somewhat higher GI rates in trials.
• Insurance: Wegovy has been on the market longer (2021 vs. 2023), so some plans have broader coverage or fewer prior-authorization steps for it — but this varies by plan and changes over time.
• Cost: List prices are similar (~1,300–1,400/month); your out-of-pocket cost depends on your plan and manufacturer savings programs.

Choose Wegovy if…

• Your insurance covers it (or covers it more easily than Zepbound).
• You or your provider prefer a medication with more years of real-world weight-loss use.
• You tend to be sensitive to GI side effects and want the gentler dose schedule.

Choose Zepbound if…

• You are looking for the largest average weight loss in the clinical data.
• Your plan covers it and you accept a somewhat higher chance of GI side effects.
• Your provider recommends the dual-agonist mechanism for your situation.

Not sure?

Coverage often settles this question before anything else — check your formulary and prior-authorization requirements first, then discuss the clinical trade-offs with a qualified provider who knows your history.