Two Heavyweights
Semaglutide and tirzepatide are the two most effective weight loss medications available. Both work through incretin pathways but they are different molecules with meaningful differences.
How They Differ
Semaglutide is a pure GLP-1 receptor agonist activating one pathway. Tirzepatide is a dual GIP/GLP-1 agonist activating two pathways simultaneously, giving it a theoretical and clinical advantage.
Clinical Results
| Metric | Semaglutide | Tirzepatide |
|---|---|---|
| Average weight loss | ~15-17% | ~20-22% |
| Patients losing >20% | ~32% | ~57% |
| HbA1c improvement | Significant | Superior |
For a 230-pound man: semaglutide loses ~37 lbs, tirzepatide loses ~48 lbs. Both transformative.
Side Effects
Similar GI profiles. Tirzepatide may cause slightly more GI symptoms at highest doses. Both improve with slow titration and stabilize over time.
Cost and Access
Brand-name versions: $800-1,300/month without insurance. Compounded semaglutide through telehealth: $199-399/month. Compounded tirzepatide availability varies. Insurance coverage inconsistent for both.
Which to Choose
Compounded semaglutide offers the best combination of efficacy, availability, and cost for most men. If you have significant insulin resistance or need to lose more than 20% body weight, tirzepatide may offer incremental benefit.