What is TB-500?

What is TB-500?

TB-500 is a synthetic fragment of thymosin beta-4 (Tβ4), a naturally occurring protein involved in cell migration and wound healing. It is not approved by any regulatory agency.

Key Facts

Fact	Detail
Approved	No
Parent Compound	Thymosin beta-4
Evidence Level	Low
WADA Status	Prohibited

TB-500 vs Thymosin Beta-4

Aspect	TB-500	Thymosin Beta-4
Structure	Fragment	Full protein
Human Trials	None (TB-500)	Some Phase 2
Research	Limited	More extensive

What’s Claimed?

TB-500 is marketed for:

• Muscle and tendon healing
• Wound recovery
• Flexibility improvement

The Evidence Problem

• TB-500 specifically has no human clinical trials
• Research on the parent compound (Tβ4) cannot be directly applied
• The fragment may behave differently than the full protein

Important Warnings

• Products are unregulated with unknown purity
• Safety is not established
• Banned in competitive sports
• Gained attention from horse racing scandals

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This guide is for educational purposes only. TB-500 is not approved for any medical use.