The price tag on a GLP-1 medication tells you almost nothing about whether it’s a good deal. A $1,000-a-month drug that melts away 45 pounds can be a better value than a $300 option that nudges you down 15. The metric that cuts through the noise is simple: cost per pound lost — the total you spend divided by the weight you actually keep off. Here’s how to run that math for yourself, with real 2026 numbers.
The formula
Cost per pound = (Monthly cost × Months on treatment) ÷ Total pounds lost
A $130/lb result means every pound you dropped cost you about $130. Lower is better — but only if the weight stays off (more on that below).
Why sticker price lies
Two things drive the real value of a GLP-1, and price is only one of them. The other is efficacy — how much weight the medication actually produces in clinical trials. Because efficacy sits in the denominator of our formula, a more effective drug can deliver a lower cost per pound even at a higher monthly price.
Tirzepatide (Zepbound) produced roughly 20–22% total body-weight loss over 72 weeks in the SURMOUNT trials. Semaglutide (Wegovy) landed near 15% over 68 weeks in the STEP program. Older liraglutide (Saxenda) managed about 8%. That spread matters enormously: the same dollar buys very different results.
Cost per pound, by medication (2026)
The table below models a person starting at 220 lb over a 12-month course, using typical 2026 U.S. self-pay pricing. Ranges reflect the gap between manufacturer self-pay programs (the low end) and full cash retail (the high end).
| Option | Typical monthly (self-pay) | Avg. clinical loss | Est. lbs lost | Cost per pound |
|---|---|---|---|---|
| Zepbound (tirzepatide, branded) | $499–$1,086 | ~20–22% | ~46 lb | ~$130–$283 |
| Wegovy (semaglutide, branded) | $499–$1,349 | ~15% | ~33 lb | ~$181–$490 |
| Compounded tirzepatide | $200–$400 | ~15–20%* | ~38 lb | ~$63–$126 |
| Compounded semaglutide | $150–$300 | ~12–15%* | ~30 lb | ~$60–$120 |
| Saxenda (liraglutide) | $1,300+ | ~8% | ~18 lb | ~$867+ |
*Compounded products use the same active ingredients as their branded counterparts, but dosing consistency and clinical oversight vary by pharmacy, so we model a slightly wider efficacy range. Estimates are illustrative, not a guarantee of individual results.
The takeaway: the most expensive drug per month (Zepbound) often beats the mid-priced one (Wegovy) on cost per pound, because its higher efficacy does more work for each dollar. And the cheapest sticker price (compounded) usually wins outright on pure value — provided you can verify the pharmacy’s quality.
The hidden costs that change your math
The table is a starting point. Your real cost per pound shifts once you account for the line items that don’t show up on the prescription price:
- Dose titration. You start low and ramp up over months. Early months may cost less (lower doses are sometimes cheaper) but also produce less loss.
- Provider & membership fees. Many telehealth programs bundle the visit into the price; others charge a separate monthly membership. We break down the full fee stack here.
- Labs and follow-ups. Bloodwork and check-ins are occasionally extra.
- Side-effect management. Anti-nausea meds or the occasional missed work day are real, if small, costs.
- Insurance. If your plan covers a GLP-1, your out-of-pocket can drop to a copay — rewriting the entire equation. See our Medicare coverage guide for one major example.
The maintenance question nobody likes
Cost per pound assumes the pounds stay gone. They often don’t. In the STEP-1 extension, participants who stopped semaglutide regained about two-thirds of their lost weight within a year. That reframes the whole calculation: for many people, a GLP-1 is closer to an ongoing cost than a one-time purchase, and your true long-run number includes a lower-dose maintenance phase.
This is exactly why value — not just price — matters. A medication you can actually afford to stay on is worth more per pound than a cheaper one you have to abandon.
How to lower your own cost per pound
- Use manufacturer self-pay programs. Lilly and Novo Nordisk now sell several doses direct at a steep discount versus pharmacy retail — the low end of our table.
- Compare programs, not just drugs. The same molecule varies by hundreds of dollars across telehealth providers. See which programs come out cheapest and browse the full provider directory.
- Prioritize efficacy. A more effective drug lowers cost per pound automatically. Here’s how the top brands rank.
- Vet compounded options carefully. They’re the cheapest per pound on paper, but the 2026 FDA compounding rules narrowed who can legally provide them. Use a licensed, accredited pharmacy.
- Plan for maintenance. Ask your provider about the lowest effective dose once you hit your goal — it’s the single biggest lever on your long-term cost per pound.
Frequently asked questions
What’s a “good” cost per pound for a GLP-1?
For branded medication on a self-pay program, anything under ~$200/lb is competitive. Compounded options can dip below $100/lb. Above ~$400/lb, you’re likely overpaying for the efficacy you’re getting.
Is the cheapest option always the best value?
No. The lowest monthly price can still produce a high cost per pound if the drug is weak or if you can’t stay on it. Efficacy and adherence matter as much as price.
Does insurance change this?
Dramatically. A covered copay can take your cost per pound into single or double digits. Always check coverage before assuming self-pay.
Weighing your options? Our TrimRx cost and pricing covers pricing, clinical screening, and refund complaints.
Considering Peak Wellness? Read our Peak Wellness review for the full cost and safety breakdown.
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