Agonist
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ImmuneSubcutaneous

Thymulin

Also known as: Facteur Thymique Sérique · FTS · Zinc-thymulin

Zinc-dependent nonapeptide hormone produced by thymic epithelial cells. Promotes T-cell differentiation and maturation, modulates cytokine balance toward Th1, and has analgesic and anti-inflammatory activity in animal models.

At a glance

Half-life
1 hours
Common route
Subcutaneous
Typical dose range
100–500mcg
Stability (reconstituted)
30days refrigerated

Best timing

Daily or alternate-day dosing. Often cycled with thymosin alpha-1 in extended immune protocols.

Contraindications

  • Pregnancy
  • Active autoimmune disease without medical supervision
  • Organ transplant on immunosuppression

Watch symptoms

  • Injection site reactions
  • Mild fatigue or flu-like feeling early
  • Limited modern human safety data — most research dates to the 1980s

Citations

The primary literature.

  1. 01Thymulin: an overview of physiology and clinical applicationsPubMed
  2. 02Thymulin (zinc-FTS) modulates inflammatory and pain responsesPubMed
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