Peptide Schedule
Thymosin Beta-443 residuesSDKPDMAEIEKFDKSKLKKTETQEKNPLPSKETIEQEKQAGESEach bubble = one amino acid. Size = residue mass. Color = chemical class.

Thymosin Beta-4 Dosage Calculator

Healing & RecoveryInjectionResearch~2 hours half-life

Thymosin Beta-4 (Tb4) is the full-length 43-amino-acid protein and the primary G-actin sequestering peptide in the human body.

Full-spectrum tissue repair with all functional domains intactCardioprotective via Ac-SDKP domain (not present in TB-500)Promotes angiogenesis and new blood vessel formationReduces inflammation and fibrosis (scar tissue)4 weeks on / 2 weeks off

750mcg · Daily

100500
37.5 units
100 units (1mL)
Concentration
2,000
mcg/mL
Draw Volume
0.375
mL
Syringe Units
37.5
units
Doses / Vial
2
doses

Summary: Add 1mL BAC water to your 2mg vial. Draw to 37.5 units on a U-100 syringe for a 750mcg dose. This vial will last 2 doses.

Cycle Planner

Subcutaneous or Intravenous. Typical beginner frequency: daily.

Thymosin Beta-4 Pharmacokinetics

Pharmacokinetics — Active Dose Over Time

t½ = ~2 hours (IV)
50%25%12.5%100%75%50%25%0%02h4h6h8h10hTime after injectionDose remaining
After 1 half-life (2h): 50% remainsAfter 2 half-lives (4h): 25% remainsAfter 3 half-lives (6h): 12.5% remains
At a 1.5mg dose: 50% = 750mcg remaining after 2h. Recommended frequency: Daily.

Disclaimer: This curve is a simplified first-order exponential decay model. Actual pharmacokinetics vary based on injection site, individual metabolism, body composition, and other factors. Half-life values are approximate and based on available preclinical and clinical literature. Many research peptides lack formal human pharmacokinetic studies. This is for educational purposes only — not medical advice.

Thymosin Beta-4 Dosing Protocol

LevelDose / InjectionFrequency
Beginner750mcgDaily
Moderate1,500mcgDaily
Aggressive3mgDaily

Note: Full-length 43-amino-acid protein, distinct from TB-500 which is only the 7-amino-acid active fragment. Due to short half-life, daily dosing is standard. Loading phase of 2-4 weeks at higher dose, then reduce to maintenance. Store reconstituted vial refrigerated.

About Thymosin Beta-4

Thymosin Beta-4 (Tb4) is the full-length 43-amino-acid protein and the primary G-actin sequestering peptide in the human body. Unlike TB-500, which contains only the central actin-binding fragment (amino acids 17-23), full-length Tb4 retains additional functional domains including the Ac-SDKP sequence responsible for cardioprotective and anti-fibrotic effects. Tb4 promotes wound healing, angiogenesis, and tissue regeneration while reducing inflammation and scar formation. It is the first known molecule demonstrated to simultaneously initiate myocardial and vascular regeneration after systemic administration in preclinical models.

Frequently Asked Questions