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Everything you need to know about TB-500 (Thymosin Beta-4) dosing — protocols, safety, and where to buy.
Dose Range
2,000–5,000 mcg (2–5 mg) per injection
Frequency
2x per week during loading; 1x per week maintenance
Cycle Length
4–8 weeks loading, then 2–4 weeks maintenance
Half-Life
~2–3 hours
Calculate syringe units instantly
Syringe Draw
10.0 units
2500 mcg/ml · 0.100 ml draw
Contraindications
Active cancer (theoretical concern with tissue growth promotion). Pregnancy or breastfeeding. Known hypersensitivity to thymosin beta-4 fragments.
Reconstitute with bacteriostatic water. A 5mg vial with 1mL BAC water = 5mg per mL. TB-500 is systemic and does not need to be injected near the injury site. Store reconstituted vials refrigerated (2–8°C) and use within 3–4 weeks.
Where to Buy TB-500 (Thymosin Beta-4)
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The typical dose range for TB-500 (Thymosin Beta-4) is 2,000–5,000 mcg (2–5 mg) per injection. It is usually administered 2x per week during loading; 1x per week maintenance. Always start with the lowest effective dose.
2x per week during loading; 1x per week maintenance
Yes, typical cycle length is 4–8 weeks loading, then 2–4 weeks maintenance.
Generally well-tolerated. Occasional mild headache, nausea, or lethargy. Localized irritation at injection site. Rare: flu-like symptoms, temporary fatigue during initial use.
Compare 4 listings from 4 vendors on our price comparison page — starting from $34.99.
TB-500 (Thymosin Beta-4) Full Profile
Research data, mechanisms, and pricing
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