Wegovy vs Zepbound (June 2026): SURMOUNT-5 Head-to-Head, Wegovy HD, & Cost Comparison

Zepbound (tirzepatide) produces 20.9% body weight loss vs Wegovy's (semaglutide) 14.9% at 68 weeks, per the SURMOUNT-1 and STEP-1 trials. In the August 7 manufacturer-direct check, NovoCare listed the Wegovy pen at $199/month for the first two low-dose fills, then $349/month at standard strengths ($399 for HD) and oral pill from $149/month, prescription required and dose-dependent. LillyDirect listed Zepbound vials from $299/month, rising to $449 for higher doses under its stated refill terms. With eligible commercial insurance and a manufacturer savings card, either may cost as little as $25/month. Both are FDA-approved for chronic weight management (Wegovy: June 2021, Zepbound: November 2023). Both are eligible for $50/month Medicare Part D coverage via the Medicare GLP-1 Bridge program live as of July 1, 2026.

Quick answer by priority: Max weight loss → Zepbound (20.9% vs 14.9% in the separate pivotal trials; SURMOUNT-5 also favored tirzepatide head to head). Lower first-fill manufacturer offer → Wegovy pen at $199 for the first two low-dose fills vs Zepbound starter vial from $299; Wegovy then rises to $349 at standard strengths ($399 HD), while Zepbound follows its own dose/refill ladder. Better insurance coverage → check your formulary rather than assuming either brand wins. Switching mid-treatment → both work, but Zepbound's dual GIP/GLP-1 mechanism means escalation is different. For compounded alternatives, see cheapest GLP-1 providers; advertised price does not establish that a patient-specific prescription satisfies 503A, 503B, and state-law conditions. For tirzepatide-specific options, see cheapest tirzepatide online.

Does Wegovy or Zepbound Work Better for Weight Loss?

Zepbound, by 6.5 percentage points. At maximum tolerated doses it produced 20.2% average weight loss vs Wegovy's 13.7%, and nearly three times as many patients reached 30%+ loss. Wegovy HD at 7.2mg narrows that gap with 20.7% mean loss, and individual outcomes vary.

The most reliable comparison now comes from SURMOUNT-5, the first large-scale head-to-head randomized trial of tirzepatide vs. semaglutide, published in the New England Journal of Medicine and presented at the European Congress on Obesity 2025. 751 participants with obesity (no diabetes) were randomized to maximum-tolerated doses of either drug for 72 weeks. The pivotal solo trials, STEP 1 for Wegovy and SURMOUNT-1 for Zepbound, still provide useful dose-specific data but had different study populations and durations.

The SURMOUNT-5 head-to-head result is definitive: at maximum tolerated doses, Zepbound produced 20.2% body weight loss vs Wegovy's 13.7%, a 6.5 percentage point advantage. For a 250-pound person, that's losing 50.5 lbs on Zepbound vs 34.3 lbs on Wegovy. Nearly three times as many Zepbound patients (19.7%) achieved 30%+ weight loss compared to Wegovy (6.9%). At the individual trial level (SURMOUNT-1 at Zepbound's highest 15mg dose vs STEP 1 at Wegovy's 2.4mg dose), Zepbound produced 20.9% vs 14.9%, a similar gap via indirect comparison.

How Do Wegovy and Zepbound Work?

Wegovy (semaglutide) is a GLP-1 receptor agonist. It mimics the natural GLP-1 hormone your gut produces after eating, which slows gastric emptying, reduces appetite, and signals fullness to the brain. It's the same active ingredient as Ozempic (approved for diabetes at a lower dose).

Zepbound (tirzepatide) is a dual GIP/GLP-1 receptor agonist. It does everything semaglutide does, but also activates GIP (glucose-dependent insulinotropic polypeptide) receptors. GIP affects fat storage, energy expenditure, and appetite through different pathways than GLP-1 alone. This dual mechanism is believed to explain Zepbound's higher average weight loss in trials.

Tirzepatide is the same active ingredient as Mounjaro (approved for Type 2 diabetes). Zepbound is the weight-loss-specific brand approved in November 2023.

How Much Do Wegovy and Zepbound Cost in August 2026?

Between $25 and about $1,349 a month, depending on insurance, eligibility, product, and dose. Eligible commercially insured patients using a savings card may pay as little as $25/month. In the August 7 cash-pay check, NovoCare listed the Wegovy pen at $199/month for the first two low-dose fills, then $349/month at standard strengths ($399 for HD) and pill from $149/month; LillyDirect listed Zepbound from $299/month with higher-dose pricing.

Pricing depends heavily on whether you have insurance, which manufacturer programs you use, and how you access the medication. Here's the current landscape:

Pricing timeline: Novo Nordisk launched a multi-month Wegovy subscription on March 31, 2026 through participating telehealth providers at $329/month (3-month), $279/month (6-month), and $249/month (12-month). Those are historical launch terms. In the newer August 7 manufacturer-direct check, NovoCare listed the Wegovy pen at $199/month for the first two low-dose fills, then $349/month at standard strengths ($399 for HD) and pill from $149/month, prescription required and dose-dependent. LillyDirect listed Zepbound from $299/month, rising to $449 for higher doses under its stated refill terms. Eligible commercially insured patients may pay as little as $25/month with manufacturer savings cards. For Medicare beneficiaries, the Medicare GLP-1 Bridge program covers both drugs at a $50/month copay. Telehealth alternatives with compounded options include Sprout Health $199 first month, then $249/month and Enhance MD semaglutide from $49 first month or tirzepatide from $99 first month; advertised availability does not by itself establish the legal basis for a particular compounded prescription. For a full breakdown, see cheapest GLP-1 providers or cheapest tirzepatide online.

Available Formulations

Wegovy currently has more delivery options than Zepbound:

• •Wegovy injectable pen: 0.25 mg, 0.5 mg, 1.0 mg, 1.7 mg, 2.4 mg, weekly injection with pre-filled auto-injector
• •Wegovy HD (7.2mg) injectable pen: FDA-approved March 20, 2026, Novo Nordisk's highest-dose semaglutide injection. 20.7% mean weight loss at 72 weeks in clinical trials, comparable to Zepbound's highest-dose results. Available via NovoCare from April 2026
• •Oral Wegovy tablet: Approved December 2025, a semaglutide pill taken daily. Must be taken on an empty stomach with a small amount of water, then wait 30 minutes before eating. Available at starter doses through platforms like Ro
• •Zepbound injectable pen: 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, 15 mg, weekly injection with pre-filled auto-injector
• •Zepbound single-dose vials: Available through LillyDirect at lower prices than pen injectors, requires drawing into a syringe yourself

If you're needle-averse, Wegovy has a clear advantage with its oral tablet option. Zepbound is injection-only as of April 2026. However, Foundayo (orforglipron), a different GLP-1 pill by Eli Lilly, was approved April 1, 2026 with no fasting requirements, giving needle-averse patients another Lilly option.

Dose Escalation: How You Ramp Up

Both medications start at low doses and gradually increase to reduce GI side effects. Here's how the standard titration works:

Wegovy reaches its maximum dose in about 4-5 months. Zepbound has more flexibility at the top end, your provider can adjust between 10 mg, 12.5 mg, and 15 mg based on your response and tolerability. This flexibility can be useful if you hit a weight loss plateau.

Does Wegovy or Zepbound Have Worse Side Effects?

Wegovy, on the trial numbers. Nausea runs about 44% versus about 24-33% for Zepbound and vomiting about 24% versus about 6-13%, though those rates come from separate trial programs with different populations, so real-world tolerance varies.

Both medications cause similar GI side effects, primarily during dose escalation. The rates from the Wegovy and Zepbound prescribing information:

Wegovy has notably higher nausea and vomiting rates in clinical trials. Zepbound appears to be better tolerated overall, with lower GI side effect rates across the board. However, trial populations differ and real-world experiences vary. Both medications' side effects tend to improve after the first 4-8 weeks of each dose level. For a dose-by-dose breakdown of what to expect on Zepbound, including SURMOUNT data for each dose tier and management strategies, see our Zepbound side effects guide.

Are Wegovy and Zepbound Covered by Insurance?

Sometimes, depending on the plan. Commercial coverage of Wegovy and Zepbound varies dramatically and most insurers require prior authorization for both, though Medicare Part D now covers both at a $50 a month copay for eligible beneficiaries under the GLP-1 Bridge program, live as of July 2026.

Insurance coverage is one of the most important practical differences. Both face restrictions, but the landscape differs:

• •Commercial insurance: Coverage varies dramatically by plan. Some insurers prefer Wegovy (because of Novo Nordisk's rebate deals), others prefer Zepbound (Lilly's contracts). Check your formulary or ask your provider to run a benefits check for both
• •Medicare: Neither was covered for weight loss under Part D until the GLP-1 Bridge program live as of July 2026, which covers both Wegovy and Zepbound at a $50/mo copay for eligible beneficiaries
• •Prior authorization: Required by most insurers for both drugs. Typical requirements: BMI ≥30 (or ≥27 with comorbidity), documented failed diet/exercise attempts, and sometimes step therapy (trying cheaper medications first)
• •Wegovy cardiovascular indication: Wegovy has an additional FDA approval for cardiovascular risk reduction (based on the SELECT trial), which gives it coverage under some plans that exclude weight-loss-only medications

The cardiovascular indication is Wegovy's biggest insurance advantage. If your insurer denies coverage for weight loss, your provider may be able to prescribe Wegovy for cardiovascular risk reduction if you meet the criteria, this pathway isn't available for Zepbound.

Who Should Choose Wegovy

• •Your insurance covers Wegovy but not Zepbound, check your formulary first
• •You want an oral (pill) option and don't want injections
• •You have cardiovascular risk factors, Wegovy's SELECT trial data may help with insurance approval
• •You're already on Ozempic for diabetes and want to switch to the weight-loss dose
• •You prefer a longer track record, Wegovy has been on the market since June 2021
• •You want maximum weight loss at the highest dose, Wegovy HD (7.2mg, approved March 2026) delivers 20.7% weight loss, comparable to Zepbound's best results in SURMOUNT-5
• •You are comparing manufacturer-direct floors: NovoCare listed the Wegovy pen at $199/mo for the first two low-dose fills, then $349/mo at standard strengths ($399 for HD) in the August 7 check, below LillyDirect's $299/mo Zepbound starter vial; confirm your dose and checkout total before deciding

Who Should Choose Zepbound

• •You want the highest average weight loss based on clinical trial data
• •You're paying out-of-pocket month-to-month: LillyDirect vials start at $299/mo. Note: if you commit to a 12-month Wegovy subscription, Wegovy ($249/mo) is now cheaper than Zepbound's starter vial
• •You experienced significant nausea on semaglutide, Zepbound's GI side effects are generally milder
• •You want more dose flexibility at the maintenance level (10, 12.5, or 15 mg options)
• •Your insurance covers Zepbound or has it as a preferred formulary option

Our Recommendation

If weight loss results are your top priority and you're paying cash month-to-month, Zepbound wins on efficacy (20.2% vs 13.7% in SURMOUNT-5 head-to-head) with LillyDirect vials starting at $299/mo. If you're committing to at least 12 months of treatment, which clinical guidelines recommend for meaningful weight loss, Wegovy's annual subscription at $249/mo is now cheaper than Zepbound's starter vial, making it the better value for long-term self-pay patients.

If insurance coverage is your top priority, check your formulary for both drugs and go with whichever is covered. Wegovy's cardiovascular indication gives it an edge for insurance approval in cases where weight-loss-only coverage is denied.

If you hate needles, Wegovy is your only option among these two (oral tablet available). Though you should also consider Foundayo, a daily GLP-1 pill with no fasting requirements, or Embody's needle-free oral tirzepatide gum ($329/mo) if you'd rather stay on the dual-agonist tirzepatide.

Either way, both are effective, FDA-approved medications that produce significant weight loss when combined with diet and exercise. The "wrong" choice here is still a good choice, the biggest factor in your results will be consistency and how well you tolerate dose escalation, not which specific drug you choose.

Not sure which provider to use? Check our ranked list of GLP-1 telehealth providers or take the match quiz to get a personalized recommendation. You can also use the cost calculator to estimate what you'd actually pay based on your insurance and medication preference.