Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Selegiline | Tirzepatide | |
|---|---|---|
| Category | Pharmaceuticals | Pharmaceuticals |
| Standard Dose | — | — |
| Timing | — | — |
| Cycle Duration | — | — |
| Evidence Level | Strong | Strong (FDA-approved) |
Selective MAO-B inhibitor that raises dopaminergic tone at lower doses and is used clinically in Parkinson's disease and select mood protocols.
Dual GIP/GLP-1 receptor agonist. Enhances insulin secretion, reduces glucagon, slows gastric emptying, and acts on hypothalamic appetite centers. Produces greater weight loss than semaglutide in head-to-head trials. Also improves cardiovascular risk markers.
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