TB-500 vs Thymosin Alpha-1

A detailed comparison to help you understand the differences and choose the right peptide for your research goals.

TB-500

Thymosin Beta-4 (TB-500) is a naturally occurring peptide present in almost all human and animal cells. It plays a crucial role in tissue repair and regeneration.

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Thymosin Alpha-1

Thymosin Alpha-1 is a peptide naturally produced by the thymus gland that plays a crucial role in immune system modulation. It is approved in over 35 countries for various conditions including hepatitis B and C.

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Side-by-Side Comparison

Aspect	TB-500	Thymosin Alpha-1
Dose Range	2 mg–2.5 mg	1.6 mg–3.2 mg
Frequency	Less than daily	Less than daily
Cycle Length	4–8 weeks	4–12 weeks
Route	subcutaneous	subcutaneous
Mechanism	TB-500 promotes cell migration and differentiation, regulates actin (a cell-building protein), and reduces inflammation. It supports the formation of new blood vessels and wound healing.	Enhances T-cell function and maturation, stimulates dendritic cell activity, and modulates cytokine production. Promotes the differentiation of stem cells into mature T lymphocytes.
Typical Dosage	Research protocols typically use 2-2.5mg twice weekly during the loading phase, followed by maintenance dosing of 2mg every 2 weeks.	Clinical dosing typically ranges from 1.6mg to 6.4mg administered subcutaneously 2-3 times weekly. Research protocols may vary.
Administration	Administered via subcutaneous or intramuscular injection. Some protocols suggest injection near injury sites.	Subcutaneous injection. Often used in cycles or as part of comprehensive immune support protocols.
Side Effects	May cause temporary fatigue, headache, or localized irritation at injection sites.	Generally well-tolerated. Rare side effects include injection site reactions, mild flu-like symptoms, and temporary fatigue.
Best For	Muscle Growth Recovery & Healing	Recovery & Healing