Thymalin

A polypeptide complex extracted from calf thymus, believed to act via a core dipeptide (Glu-Trp) fragment to restore T-cell-mediated immune function.

Mechanism of action from published research — how the molecule behaves, not a claim about any product or any human-use effect.

Studied for immune restoration after illness, surgery, radiation exposure, and age-related immune decline.

• Immune & thymicStudied in immune-modulation and thymic-function research.
• Longevity & anti-agingStudied in aging, cellular-senescence, and mitochondrial-function research.

Limited human data — approved in the former Soviet Union in 1982 and used clinically in Russia, but large independent Western randomized trials are lacking.

Where the science stands — an approved drug is not the same as the research-grade material a vendor sells, which is unregulated regardless.

• Independent purity. Look for a third-party COA (Janoshik or MZ) showing a measured purity — not just a number the vendor typed.
• Batch match. The strongest evidence is a certificate for the exact batch you’ll receive, attributed to this vendor — check the cross-verification on the listing.
• Vendor reputation. See how the vendor is talked about in the community before trusting a new name.

Research context only — VialGrade never gives dosing, medical, or human-use guidance.