TB-500
Also known as Thymosin Beta-4 fragment, TB4
Synthetic fragment related to Thymosin Beta-4 studied for tissue repair.
- Category
- healing
- Route
- subq
- Documented dose
- 2000–5000 mcg
- Typical frequency
- Twice weekly loading, then weekly
- Cycle
- 6 weeks on, 4 off
- Half-life
- ~2-3 days (estimated)
- Common vial sizes
- 2 mg, 5 mg, 10 mg
- Regulatory status
- Not approved for human use; banned by WADA.
What it does
A synthetic version of an active piece of Thymosin Beta-4, a protein involved in cell movement and repair. It helps cells migrate into damaged areas and encourages new blood vessels to grow there. What people look into it for: • Muscle, tendon and ligament recovery after injury or hard training • Better flexibility and less scar-tissue stiffness • Wound healing and reduced inflammation • Heart tissue repair in animal research It is often paired with BPC-157: TB-500 works more systemically throughout the body while BPC-157 works strongly at the site of injury.
Mechanism
Binds G-actin and promotes actin polymerisation, cell migration and angiogenesis.
Storage — lyophilised
Refrigerate 2-8C, protect from light.
Storage — reconstituted
Refrigerate 2-8C, use within ~28 days.
Reconstitution notes
Add 2 ml bacteriostatic water to a 5 mg vial for 25 mcg per unit.
Commonly stacked with
- BPC-157
Commonly reported side effects
- Fatigue after dosing
- Head rush
- Injection-site irritation
Contraindications noted
- Active malignancy (theoretical)
- Pregnancy or breastfeeding
Research notes
Human data limited; most claims extrapolated from animal wound-healing models.
Track this properly
Work out syringe units with the free calculator, or set up a full schedule in about a minute.
Reference information only, not medical advice. See our medical disclaimer.