Compare peptides
Pick any two to see how they’re dosed, how they’re stored and how strong the evidence is.
Pick two
| Semaglutide | Tirzepatide |
|---|---|
| Evidence | |
| Approved drug. Sold as Ozempic and Wegovy. | Approved drug. Sold as Mounjaro and Zepbound. |
| Vial sizes | |
| 2, 3, 5, 10 mg | 5, 10, 15, 30 mg |
| Usual dose range | |
| 0.25–2.4 mg | 2.5–15 mg |
| How often | |
| Weekly | Weekly |
| Unmixed | |
| Freezer −20°C | Freezer −20°C |
| After mixing | |
| Fridge 2–8°C, use within 28 days | Fridge 2–8°C, use within 28 days |
There’s a full write-up of this pair: Semaglutide vs Tirzepatide
Written comparisons
The pairs people ask about most, with what the evidence actually shows.
- Semaglutide vs Tirzepatide
Semaglutide (Ozempic, Wegovy) vs tirzepatide (Mounjaro, Zepbound): how they work, trial weight loss, dose steps, side effects and how to measure each in units.
- BPC-157 vs TB-500
BPC-157 vs TB-500 compared: what each is, why one is measured in mcg and the other in mg, where people inject them, and what the evidence actually shows.
- CJC-1295 vs Ipamorelin
CJC-1295 vs ipamorelin: how each triggers growth hormone release, why they're sold as a blend, how blend doses are counted, and what the evidence shows.
- Semaglutide vs Retatrutide
Semaglutide vs retatrutide: one receptor vs three, trial weight loss, approval status, and why retatrutide sold online is not the trial drug.
- Sermorelin vs Tesamorelin
Sermorelin vs tesamorelin: approval status, what the trials showed, and why one is measured in mcg and the other in mg.
- GHK-Cu vs Epithalon
GHK-Cu vs epithalon: what each is claimed to do, what has actually been shown in people, and why one is measured in mcg and the other in mg.