Research reference only. Not medical advice. Most compounds are not FDA-approved. Consult a qualified clinician before any human use.

Immune Support

Crystagen

Khavinson immune bioregulator; Kristagen; T-38

Classification: Khavinson short peptide bioregulator

Mechanism: Tissue-specific gene expression in lymphoid/thymic cells; normalizes T-cell and macrophage activity; doubles HSPA1A heat-shock expression and modulates IL-6

Benefits: Immunomodulation; thymic function support; reduced respiratory infection rates in athletes; convalescence/recovery support

Evidence tier: Russian Research · Availability: Research

Primary sources

  1. Khavinson VK et al. Peptide regulation of gene expression — a systematic review. Molecules 2021. PMID 34834147
  2. Khavinson V et al. Peptide regulation of cell differentiation. Stem Cell Rev Rep 2020. PMID 31808038
  3. Note: Crystagen (also Kristagen, T-38) is one of three short peptides isolated from Thymalin alongside Thymogen (Glu-Trp) and Vilon (Lys-Glu); primary literature is published largely in Russian gerontology journals and English-indexed sources are limited to Khavinson-laboratory reviews — entry confidence is correspondingly lower.

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