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Cheapest · 10mg
$34.99
$3.50/mg at Welli Labs
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peptide39 sources in stock

TB-500

Thymosin Beta-4

Synthetic analog of naturally-occurring thymosin beta-4. Present in nearly all human cells.

Tissue repairCardiac healingInflammation reduction
↓ Prices↓ Dosing↓ Research

For research use only · Not for human consumption

/ compare by size

Every source for TB-500

Affiliate disclosure: purchases through links below may earn us a commission. Rankings are never sold — methodology · full disclosure

Size:
18 sources for 5mg·cheapest $24.30 at Ascension Peptides (with code)·$10.80/mg
#1
Ascension PeptidesBEST
★ 4.8
$54.00
$24.30
with code
Buy at Ascension Peptides →
#2
RefillPen
★ 4.5· price unverified
$34.32
$6.86/mg
Buy at RefillPen →
#3
One Day Compounds
★ 4.6· price unverified
$34.58
$6.92/mg
Buy at One Day Compounds →
#4
Solyn Peptides
★ 4.5· price unverified
$35.13
$7.03/mg
Buy at Solyn Peptides →
#5
Glacier Aminos
★ 4.6· price unverified
$38.48
$7.70/mg
Buy at Glacier Aminos →
#6
Felix Chemical Supply
★ 4.5· price unverified
$38.94
$7.79/mg
Buy at Felix Chemical Supply →
#7
Peptira
★ 4.6· price unverified
$39.90
$7.98/mg
Buy at Peptira →
#8
Throne
★ 4.7· price unverified
$41.45
$8.29/mg
Buy at Throne →
#9
Omegamino
★ 4.5· price unverified
$43.43
$8.69/mg
Buy at Omegamino →
#10
Modified Aminos
★ 4.5· price unverified
$49.22
$9.84/mg
Buy at Modified Aminos →
#11
Valor Peptides
★ 4.8· price unverified
$50.00
$10.00/mg
Buy at Valor Peptides →
#12
Solution Peptides
★ 4.6· price unverified
$55.44
$11.09/mg
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#13
Renova Peptides
★ 4.6· price unverified
$72.85
$59.20
$11.84/mg
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#14
Peptidology
★ 4.8· price unverified
$79.81
$64.56
$12.91/mg
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#15
Southern Aminos
★ 4.6· price unverified
$71.01
$14.20/mg
Buy at Southern Aminos →
#16
Good Labs
★ 4.7· price unverified
$71.66
$14.33/mg
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#17
Lab Sourced
★ 4.7· price unverified
$72.06
$14.41/mg
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#18
Molecular Solutions
★ 4.7· price unverified
$72.07
$14.41/mg
Buy at Molecular Solutions →
#19
Purus Peptides
★ 4.7· price unverified
$40.86
$8.17/mg
Out of stock
#20
Biocase Innovations
★ 4.6· price unverified
$41.10
$8.22/mg
Out of stock
#21
LA Peptides
★ 4.6· price unverified
$48.32
$9.66/mg
Out of stock
🏆Our pick for TB-500
Ascension Peptides
5mg · USA · Card / Crypto / Zelle
  • ✓Third-party tested (Janoshik)
  • ✓COAs provided — Per-batch core, quarterly bonus
  • ✓Highest verification tier in stock
  • ✓4.8★ community rating
$60.00$54.00
$4.86/mg
Buy at Ascension Peptides →
Affiliate link · disclosure
Also solid
AMP Peptides
10mg · $7.50/mg
$75.00
Buy →
Double R Labs
10mg · $4.67/mg
$54.99
Buy →
Welli Labs
10mg · $3.50/mg
$34.99
Buy →
How we pick sources →
/ research index

The research base

Research Maturity
★★★★☆
4/5 — Volume of studies
Evidence Strength
★★★★☆
4/5 — Quality of evidence

80+ studies. Strong evidence for tissue repair, cardiac regeneration, anti-inflammatory effects.

/ mechanism of action

How it works

Increases β-actin polymerization. Promotes cell migration and differentiation. Anti-inflammatory via IL-10 upregulation.

/ research dosing

Common research protocols

Range
2.5-5 mg/week (loading) → 2-2.5 mg/week (maintenance)
Frequency
1-2x weekly during loading; weekly thereafter
Route
Subcutaneous
Cycle
Loading 4 weeks at 5mg/week, then maintenance 2-2.5mg/week for 4-8 weeks
Research notes

Often stacked with BPC-157 in 1:1 ratio for recovery research. Loading phase builds tissue concentration; maintenance preserves effect. Animal models support faster tendon and ligament healing.

References
PMID: 18403709 →PMID: 23386757 →
FOR RESEARCH USE ONLY. Doses listed are compiled from published research literature, FDA-approved drug labels, and well-documented research community practice. Not medical advice.
/ standalone use

As a solo compound

Effective standalone for tissue repair research. Strong data on solo administration.

Common pairings
+ BPC-157+ GHK-Cu
/ side effects

What to know

Minimal. Some report mild headache. Very low toxicity profile.

/ timeline

Realistic expectations

2-6 weeks for observable effects in research

FOR RESEARCH USE ONLY. TB-500 is intended for laboratory research and not for human consumption.