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Is Zepbound better than Wegovy?

Reviewed by the WeighedHealth Editorial Team against primary clinical sources — FDA labeling, peer-reviewed trials, and specialty-society guidelines.
Content current as of July 2026; updated when guidance or availability changes.
Zepbound (tirzepatide) shows greater average weight loss than Wegovy (semaglutide) in clinical trials — roughly 20% body weight loss vs 15% over similar time periods, including the head-to-head SURMOUNT-5 study where Zepbound's edge was confirmed. By that single metric, Zepbound is more effective on average. But 'better' for any individual patient depends on multiple factors: insurance coverage (your plan may prefer one), side-effect tolerability (some patients tolerate Wegovy better, others Zepbound), cost (LillyDirect Self-Pay for Zepbound is often cheaper than NovoCare for Wegovy), and individual response (some patients respond better to one mechanism than the other). For a patient with no preference and broad insurance coverage, current evidence favors Zepbound. For patients constrained by plan formulary, the right answer is whichever the plan covers. Many patients try one, evaluate after 3-6 months, and switch if needed.

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Drugs referenced

Related questions

  • Wegovy vs Zepbound: which is more effective?

    In separate Phase 3 trials, Zepbound (tirzepatide 15mg) produced ~20% mean body weight loss vs Wegovy (semaglutide 2.4mg) at ~15%. A head-to-head trial (SURMOUNT-5) confirmed Zepbound's edge. That said, individual response varies widely: some patients lose more on semaglutide than tirzepatide, others tolerate one's side-effect profile better than the other.

  • Is Wegovy or Zepbound cheaper?

    At list price, Zepbound is slightly cheaper than Wegovy (~$1,060 vs ~$1,349/month). For cash-pay patients, Lilly's self-pay vials ($299-$449/month for Zepbound when refilled within 45 days) compare with Novo's NovoCare self-pay ($349/month for Wegovy pens). The 2.5 mg Zepbound vial is cheaper; from 5 mg up the vials cost more than Wegovy self-pay. Insurance

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