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.

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.

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