Semaglutide vs Tirzepatide vs Retatrutide 2026: Full Comparison
Single vs dual vs triple agonist — how semaglutide (~15%), tirzepatide (~21%), and retatrutide (~24-28%) stack up on mechanism, approval, cost, and choice.
Medically reviewed by Dr. Sarah Chen, MDLose 15-22% body weight with doctor-backed GLP-1s
Compounded semaglutide & tirzepatide from $350/mo $119/mo. Free online consultation with a US-licensed provider. If approved, medication ships to your door in 3-5 days. No insurance needed.
⚡ Limited spots this month — 50,000+ patients already started
See if I qualify — Free consultationAvailable online · Shipped to your door anywhere in the US
Paid partnership · Prescription product requiring a physician consultation · Not everyone qualifies · Results vary
Short answer
It's a single → dual → triple progression, and efficacy scales with it: semaglutide ~15%, tirzepatide ~21%, retatrutide ~24-28% average weight loss in trials. The catch is availability — semaglutide and tirzepatide are approved and cheap through telehealth; retatrutide is the most potent but still in Phase 3, likely 2+ years from market.
The mechanism ladder
| Semaglutide | Tirzepatide | Retatrutide | |
|---|---|---|---|
| Receptors hit | GLP-1 only | GLP-1 + GIP | GLP-1 + GIP + glucagon |
| Trial weight loss | ~15% | ~21% | ~24-28% (Phase 2) |
| FDA approved | Yes (Ozempic, Wegovy) | Yes (Mounjaro, Zepbound) | No — Phase 3, ~2027+ |
| Compounded available | Yes, $69-$299/mo | Yes, $119-$399/mo | No |
| Brand list price | ~$1,350/mo | ~$1,060/mo | TBD |
| Extra benefit | Longest safety record | Best available efficacy | Direct fat-burning via glucagon |
Why each added receptor buys efficacy
Semaglutide's single GLP-1 hits appetite suppression + gastric slowing. Tirzepatide's added GIP brings insulin-sensitizing and a stronger central appetite effect — the ~6-point jump to ~21%. Retatrutide adds glucagon, which does something different: it directly increases metabolic expenditure and fat oxidation, not just appetite suppression. That's why its Phase 2 numbers (~24-28%) sit above even tirzepatide — it's attacking weight on three fronts.
What to actually do today
Tirzepatide is the strongest drug you can legally get right now — and compounded telehealth makes it the practical choice for most people at $119-$399/mo vs $1,060+ brand list. Semaglutide is the fallback with the longest safety record and cheapest compounded entry ($69-$299/mo). Retatrutide isn't a real option yet — don't buy "retatrutide" from peptide websites; it's unverified research chemical, not pharmaceutical product.
The wait-vs-start math
Should you hold out for retatrutide? Almost certainly not — it's 2+ years out, and the ~3-5% efficacy edge over tirzepatide isn't worth two years of waiting when you could be losing now. Weight management compounds: a year on tirzepatide beats a year of delay. Retatrutide will still exist when it launches.
Related guides
Lose 15-22% body weight — GLP-1s from $119/month
Compounded semaglutide & tirzepatide prescribed online by US-licensed providers. No insurance needed — medication shipped to your door in 3-5 days.
⚡ Limited spots this month — 50,000+ patients already started
See if I qualify — Free consultationFrom $119/month · No insurance needed · Ships nationwide in 3-5 days · Paid partnership · Results vary
Doctor-backed GLP-1 weight loss from $119/month
Compounded semaglutide & tirzepatide. Online consultation with a US-licensed provider. No insurance needed.
⚡ Limited spots this month — 50,000+ patients already started
Paid partnership · Prescription product · Not everyone qualifies · Results vary
Real patients. Real results.
Join 50,000+ patients who transformed their lives with GLP-1 medications
"I tried everything — keto, intermittent fasting, gym memberships. Nothing worked long-term. GLP-1 changed everything. I lost 47 pounds in 8 months and finally feel like myself again. The online process was so easy — I had my prescription in 2 days."
Jessica M., 38
Texas
-47 lbs
in 8 months
Compounded semaglutide
"At 52, my doctor said I was heading toward diabetes. I started tirzepatide through a telehealth program and lost 62 pounds. My A1C is back to normal, my blood pressure dropped, and I'm off two medications. Wish I'd done this years ago."
David R., 52
Florida
-62 lbs
in 11 months
Tirzepatide (Zepbound)
"I was skeptical about doing this online, but the whole process was professional and easy. My provider answered all my questions, and the medication arrived in 4 days. I've lost 38 pounds and finally have energy to play with my kids again."
Aisha K., 34
California
-38 lbs
in 6 months
Compounded semaglutide
Results vary. These testimonials reflect individual experiences and are not typical. Weight loss depends on diet, activity, and adherence to medication.
How it works — 3 simple steps
Take the 60-second quiz
Answer a few questions about your health, weight goals, and medical history. It's free and confidential.
1 min
Meet your US-licensed provider
A board-certified clinician reviews your profile and prescribes the right GLP-1 medication for you — entirely online.
24-48 hrs
Get medication shipped to your door
Your prescription is filled by a US pharmacy and delivered in discreet packaging in 3-5 business days.
3-5 days
What's your #1 weight loss goal?
This helps us match you with the right medication type.