Retatrutide vs Selegiline

Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.

RetatrutideSelegiline
CategoryPharmaceuticalsPharmaceuticals
Standard Dose
Timing
Cycle Duration
Evidence LevelEmerging (Phase 3 ongoing)Strong
A

Retatrutide

Pharmaceuticals

Mechanism

Triple incretin agonist (GIP/GLP-1/glucagon receptor). Combines appetite suppression and insulin sensitization of GLP-1 with the thermogenic and lipolytic effects of glucagon receptor activation. Produced the greatest weight loss of any anti-obesity agent in Phase 2 trials (~24% at 48 weeks).

Contraindications

  • Not FDA-approved
  • Presumed similar to GLP-1 class — MTC, pancreatitis, severe GI disease
B

Selegiline

Pharmaceuticals

Mechanism

Selective MAO-B inhibitor that raises dopaminergic tone at lower doses and is used clinically in Parkinson's disease and select mood protocols.

Contraindications

  • Do not combine casually with SSRIs or stimulants

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