Thymosin Alpha-1 vs Thymalin: price per mg, identity and regulatory status (2026)
Thymosin Alpha-1 and Thymalin are compared here as separately listed products. Thymalin's exact identity is not resolved to a public chemical record here, so this page does not state how the two relate chemically; Thymosin Alpha-1 is a 28-amino-acid peptide (C129H215N33O55). Check each supplier's specification and certificate of analysis. Lowest current in-stock prices: Thymosin Alpha-1 10mg from $59.99 ($6.00/mg) at LA Peptides; Thymalin 20mg from $39.99 ($2.00/mg) at Amino USA. Thymosin Alpha-1 has no Drugs@FDA application.
Thymosin Alpha-1 vs Thymalin: current prices and packages
| Compared property | Thymosin Alpha-1 | Thymalin |
|---|---|---|
| Category | Longevity | Bioregulators |
| Compared package | 10mg · Vial | 20mg · Vial |
| Lowest current price | $59.99 at LA Peptides, checked Oct 31, 2026 | $39.99 at Amino USA, checked Oct 31, 2026 |
| Price per labelled mg | $6.00/mg | $2.00/mg |
| Package sizes | 5mg, 10mg | 10mg, 20mg, 25mg, 100mg |
| Vendors with current prices | 3 (5 tracked) | 2 |
| Form at this package | Vial | Vial |
| Stock | In stock | In stock |
Prices exclude shipping. The price per labelled mg is always given per mg, so different package sizes compare directly; it is shown only for single-compound vials and powders with a labelled mass. Blends, capsules, liquids and IU-labelled packages are compared by package total.
Identity, regulatory status and registered research
| Compared property | Thymosin Alpha-1 | Thymalin |
|---|---|---|
| Molecular formula | C129H215N33O55 | Not resolved |
| Molecular weight | 3108.3 g/mol | — |
| Sequence | Ac-Ser-Asp-Ala-Ala-Val-Asp-Thr-Ser-Ser-Glu-Ile-Thr-Thr-Lys-Asp-Leu-Lys-Glu-Lys-Lys-Glu-Val-Val-Glu-Glu-Ala-Glu-Asn-OH (28 residues) | — |
| CAS Registry Number | 62304-98-7 | — |
| Registered clinical trials | 38 (9 active) · Phase 4: 3, Phase 3: 5, Phase 2: 23 | None recorded |
| Human intervention studies | 3 | 5 |
| US regulatory status | No Drugs@FDA application (checked October 7, 2026) · Drugs@FDA search | No reviewed Drugs@FDA record |
Identity data: PubChem, FDA GSRS and EPA records; registry counts: ClinicalTrials.gov; status: Drugs@FDA. A matching name does not verify the contents of a supplier's lot.
Key human studies
Thymosin Alpha-1
- Thymosin alpha 1 is associated with improved cellular immunity and reduced infection rate in severe acute pancreatitis patients in a double-blind randomized control study. Inflammation, 2011
- A randomized, controlled, clinical study of thymosin alpha-1 versus interferon-alpha in [corrected] patients with chronic hepatitis B lacking HBeAg in China [corrected]. Journal of the Chinese Medical Association : JCMA, 2005
- Polyethylene glycol-modified interleukin-2 and thymosin alpha 1 in human immunodeficiency virus type 1 infection. The Journal of infectious diseases, 1996
Thymalin
- Chrono- and Immunocorrection of Inflammatory Disorders of Internal Reproductive Organs in Women of Reproductive Age. Bulletin of experimental biology and medicine, 2015
- Peptides of pineal gland and thymus prolong human life. Neuro endocrinology letters, 2003
- [Prevention of postoperative complications in diffuse purulent peritonitis in children]. Khirurgiia, 1994
Studies are listed as records, newest first; they are not evidence that a research product is safe or effective.
Where to buy each compound
Thymosin Alpha-1
Thymosin Alpha-1 is a catalogue entry whose compound-specific reference review has not yet been completed.
$59.99 · 10mg · $6.00/mg · LA Peptides
View at LA Peptides, Thymosin Alpha-1 10mg, opens in a new tabPeptideTech does not sell or fulfill products. Some outgoing links can earn a commission, which does not determine price order. How we rankThymosin Alpha-1 prices →Price history →Thymalin
Thymalin is a catalogue entry whose compound-specific reference review has not yet been completed.
$39.99 · 20mg · $2.00/mg · Amino USA
View at Amino USA, Thymalin 20mg, opens in a new tabPeptideTech does not sell or fulfill products. Some outgoing links can earn a commission, which does not determine price order. How we rankThymalin prices →Price history →Related comparisons
Questions
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