Retatrutide vs Thymulin

A detailed comparison to help you understand the differences and choose the right peptide for your research goals.

Retatrutide

Retatrutide is an investigational triple agonist targeting GIP, GLP-1, and glucagon receptors. Phase 2 trials showed unprecedented weight loss of up to 24% at 48 weeks, making it potentially the most effective obesity treatment studied.

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Thymulin

Thymulin (Facteur Thymique Sérique) is a zinc-dependent nonapeptide hormone produced by thymic epithelial cells. It plays important roles in T-cell differentiation and immune system maturation.

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Side-by-Side Comparison

AspectRetatrutideThymulin
MechanismTriple receptor activation provides complementary metabolic effects: GLP-1 and GIP reduce appetite and improve insulin sensitivity, while glucagon receptor activation increases energy expenditure and promotes hepatic fat oxidation.Requires zinc for biological activity. Promotes T-cell differentiation, modulates cytokine production, and influences neuroendocrine function. Levels decline significantly with age.
Typical DosageClinical trials used doses from 1mg to 12mg weekly. Optimal dosing still being determined in ongoing Phase 3 trials.Research protocols vary. Often studied alongside zinc supplementation. Typical research doses in the microgram range.
AdministrationSubcutaneous injection once weekly. Currently only available through clinical trials - not yet FDA approved.Subcutaneous or intramuscular injection in research settings. Requires adequate zinc status for activity.
Side EffectsSimilar GI effects to other incretin-based therapies: nausea, diarrhea, vomiting, constipation. Dose-dependent severity.Limited data on exogenous administration. Theoretical effects on immune function require monitoring.
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Key Differences

Unique to Retatrutide:

Unique to Thymulin:

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