Peptide library / Immune & defense / Thymulin
Thymulin
A nine amino acid thymus hormone that needs zinc to work.
Effects studied or claimed
What it is used or promoted for, and where each effect has actually been seen
- T cell maturationAnimals
- Pain and inflammationAnimals
How it is thought to work
Thymulin is made by thymic epithelial cells and promotes T cell differentiation. Its levels fall with age.
What the evidence shows
Evidence is mostly from animal studies and experimental work.
Safety and unknowns
Human safety data are limited.
Regulatory status
Not approved. Research use.
Regulatory status changes quickly. This entry was last reviewed on 27 October 2026. Confirm current status with the FDA before relying on it.
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General information, not medical advice. Do not buy or inject unregulated peptides.