immune
Thymosin Alpha-1
Clinical immunomodulator
Cheapest offer
$4.00/mg
22 vendors tracked25 live pricesLast crawl: 2026-06-11 00:03 UTC
About
A 28-residue thymic peptide approved clinically (as thymalfasin) in many countries for hepatitis and cancer adjunct therapy. Modulates T-cell differentiation.
Also known as: Tα1, Thymalfasin
Reconstitution calculator
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For research purposes only. Not for human consumption. Always verify calculations independently.
Cost-per-dose recalculates as you adjust the calculator above.
Thymosin Alpha-1 · 5mg
6 vendors
B-
Watch$35.00
$7.00/mg· $1.75/dose
In stock◎ Best $/mg
Watch
$36.99
$7.40/mg· $1.85/dose
In stock▲ 5.7% vs best
Operational
$43.19
$8.64/mg· $2.16/dose
In stock▲ 23.4% vs best
B-
Operational$55.00
$11.00/mg· $2.75/dose
In stock▲ 57.1% vs best
Operational
$79.99
$16.00/mg· $4.00/dose
Out of stock▲ 128.5% vs best
Operational
$81.00
$16.20/mg· $4.05/dose
In stock▲ 131.4% vs best
| Vendor | Grade | Risk | Price | $/mg | Trend | $/dose at 0.25 mg | Stock | |
|---|---|---|---|---|---|---|---|---|
| Ameano Peptides US | B- | Watch | $35.00 ◎ Best $/mg | $7.00 | $1.75 | In stock | Buy with code → | |
| Modern Research Peptides (.net) US | B- | Watch | $36.99 ▲ 5.7% | $7.40 | $1.85 | In stock | Visit → | |
| Research Peptides Europe EU | A | Operational | $43.19 ▲ 23.4% | $8.64 | $2.16 | In stock | Visit → | |
| Peptide Hub US | B- | Operational | $55.00 ▲ 57.1% | $11.00 | $2.75 | In stock | Visit → | |
| Pure Lab Peptides US | B- | Operational | $79.99 ▲ 128.5% | $16.00 | $4.00 | Out | Visit → | |
| Core Peptides US | A | Operational | $81.00 ▲ 131.4% | $16.20 | $4.05 | In stock | Visit → |
Sort:
Last crawl 2026-06-11Sort:
2026-06-11Thymosin Alpha-1 · 10mg
19 vendors
B
Operational$39.99
$4.00/mg· $1.00/dose
In stock◎ Best $/mg
Watch
$44.00
$4.40/mg· $1.10/dose
In stockOn sale▲ 10.0% vs best
Operational
$55.00
$5.50/mg· $1.38/dose
In stock▲ 37.5% vs best
B
Operational$58.00
$5.80/mg· $1.45/dose
In stock▲ 45.0% vs best
B-
Watch$62.00
$6.20/mg· $1.55/dose
In stock▲ 55.0% vs best
Operational
$63.99
$6.40/mg· $1.60/dose
Out of stock▲ 60.0% vs best
B-
Operational$65.00
$6.50/mg· $1.63/dose
In stock▲ 62.5% vs best
Operational
$65.00
$6.50/mg· $1.63/dose
In stock▲ 62.5% vs best
Watch
$65.00
$6.50/mg· $1.63/dose
In stock▲ 62.5% vs best
B-
Operational$74.25
$7.42/mg· $1.86/dose
In stockOn sale▲ 85.7% vs best
Operational
$83.99
$8.40/mg· $2.10/dose
In stock▲ 110.0% vs best
Operational
$84.99
$8.50/mg· $2.12/dose
In stock▲ 112.5% vs best
B
Operational$88.99
$8.90/mg· $2.22/dose
In stockOn sale▲ 122.5% vs best
B-
Operational$89.00
$8.90/mg· $2.23/dose
In stock▲ 122.6% vs best
Operational
$90.00
$9.00/mg· $2.25/dose
In stockOn sale▲ 125.1% vs best
Operational
$102.59
$10.26/mg· $2.56/dose
In stock▲ 156.5% vs best
Operational
$119.99
$12.00/mg· $3.00/dose
Out of stock▲ 200.1% vs best
Operational
$129.97
$13.00/mg· $3.25/dose
In stock▲ 225.0% vs best
Operational
$199.99
$20.00/mg· $5.00/dose
In stockOn sale▲ 400.1% vs best
| Vendor | Grade | Risk | Price | $/mg | Trend | $/dose at 0.25 mg | Stock | |
|---|---|---|---|---|---|---|---|---|
| Welli Labs US | B | Operational | $39.99 ◎ Best $/mg | $4.00 | $1.00 | In stock | Buy with code → | |
| S1 Research (Step One Ventures) US | C | Watch | $44.00 On sale ▲ 10.0% | $4.40 | $1.10 | In stock | Visit → | |
| FITSKNS Research Group US | B- | Operational | $55.00 ▲ 37.5% | $5.50 | $1.38 | In stock | Visit → | |
| EZ Peptides US | B | Operational | $58.00 ▲ 45.0% | $5.80 | $1.45 | In stock | Visit → | |
| Ameano Peptides US | B- | Watch | $62.00 ▲ 55.0% | $6.20 | $1.55 | In stock | Visit → | |
| Glacier Aminos US | B | Operational | $63.99 ▲ 60.0% | $6.40 | $1.60 | Out | Visit → | |
| Atomik Labz US | B- | Operational | $65.00 ▲ 62.5% | $6.50 | $1.63 | In stock | Visit → | |
| Peptide Crafters US | A | Operational | $65.00 ▲ 62.5% | $6.50 | $1.63 | In stock | Visit → | |
| Solution Peptides US | B- | Watch | $65.00 ▲ 62.5% | $6.50 | $1.63 | In stock | Visit → | |
| Southern Aminos US | B- | Operational | $74.25 On sale ▲ 85.7% | $7.42 | $1.86 | In stock | Visit → | |
| Research Peptides US | B | Operational | $83.99 ▲ 110.0% | $8.40 | $2.10 | In stock | Visit → | |
| One Day Compounds US | B- | Operational | $84.99 ▲ 112.5% | $8.50 | $2.12 | In stock | Visit → | |
| MS Peptides US | B | Operational | $88.99 On sale ▲ 122.5% | $8.90 | $2.22 | In stock | Visit → | |
| Lab Sourced US | B- | Operational | $89.00 ▲ 122.6% | $8.90 | $2.23 | In stock | Visit → | |
| Ascension Peptides US | B | Operational | $90.00 On sale ▲ 125.1% | $9.00 | $2.25 | In stock | Visit → | |
| Research Peptides Europe EU | A | Operational | $102.59 ▲ 156.5% | $10.26 | $2.56 | In stock | Visit → | |
| Pure Lab Peptides US | B- | Operational | $119.99 ▲ 200.1% | $12.00 | $3.00 | Out | Visit → | |
| BioLongevity Labs US | B | Operational | $129.97 ▲ 225.0% | $13.00 | $3.25 | In stock | Visit → | |
| Nexus Peptides US | B | Operational | $199.99 On sale ▲ 400.1% | $20.00 | $5.00 | In stock | Visit → |
Sort:
Last crawl 2026-06-11Sort:
2026-06-11Research use only. The compounds listed on this page are not approved for human use through research-chemical channels. Nothing on this page is medical advice. Consult a qualified clinician before considering any peptide protocol. See affiliate disclosure and our scoring methodology.
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Vendors selling this peptide