Immune & Antimicrobial
Thymalin
The thymus schools the immune system's T cells and then shrinks with age, and thymalin is an attempt to bottle what it does: not a single molecule but an extract of thymus tissue, a mixture of short peptides given for immune restoration after illness. Because it is a mixture rather than a defined compound, the corpus can hold no molecular formula, no registry number and no sequence for it, and those fields are recorded as absent for a stated reason rather than left blank. The human evidence on file is one study comparing non-randomised treatment groups of severely ill COVID-19 patients. The rest is two rat experiments on healing jaw bone and a single computer modelling paper.
Last updated
Mechanism
Short thymic peptides associated with transcription and hematopoietic signaling.
Reported effects
What sources associate with this compound. Reported categories, not outcomes we have graded — each would need its own citation and rung.
- Immune restoration
- Autoimmune-baseline support
- Acute illness recovery
Dosing on file unverified
5-20 mg daily
| Reported dose | Volume | Draw |
|---|---|---|
| Low — 5 mg | 1 mL | 100 units |
| High — 20 mg | 4 mL | 400 units |
What that assumes. Assumes 10 mg in 2 mL (5000 mcg/mL) drawn on a U-100 barrel — the preset on this record, not a recommendation and not the only way to mix it. Change the vial mass, the diluent or the barrel and every number in this table changes. Run your own.
Carried from a source that labels it unverified, and reproduced with that label attached. A record of what is reported, not a recommendation. No citation on this page establishes it.
Reconstitution
| Vial | Diluent | Concentration | Typical dose | Draw |
|---|---|---|---|---|
| 10 mg | 2 mL | 5000 mcg/mL | 5000 mcg | 100 units |
mass ÷ diluent = concentration; dose ÷ concentration = volume; volume × the syringe factor = units on the barrel (100 for U-100, 40 for U-40). Run your own numbers.
Literature on file 5
-
review or editorial
Targeting Leukopoiesis: Pharmacological and Biotechnological Strategies for the Treatment of Leukopenia. graded on: indexed as "review-article" - secondary literature, not a study — “review-article”
-
animal in vivo
Reparative osteogenesis in mandible in cases of filling a bone defect with hydroxyapatite-containing osteotropic material and injecting the surrounding soft tissues with thymalin: experimental and morphological study. graded on: an animal model — read from the indexed abstract — “rats”
-
animal in vivo
Expression features of T-lymphocytes, B-lymphocytes and macrophages in the post-traumatic regenerate of the mandible rats under conditions of filling a bone defect with hydroxyapatite-containing osteotropic material and thymalin injecting the surrounding soft tissues. graded on: an animal model — “rats”
-
in vitro
The Influence of KE and EW Dipeptides in the Composition of the Thymalin Drug on Gene Expression and Protein Synthesis Involved in the Pathogenesis of COVID-19. graded on: an in-vitro system — read from the indexed abstract — “in vitro”
-
human observational
[Morphological compound and indicators of the blood clotting system in severe COVID-19 patients of middle aged and elderly during treatment of Tocilizumab and Thymalin.] graded on: comparison of three non-randomised treatment groups of severe COVID-19 patients — read from the abstract — “abstract review”
Identity
Classified as
- Thymic Immune Modulationmechanism
- This holds some of the oldest peptide literature on the site, much of it decades old and to standards that would not pass review today. The rung is doing real work here rather than decorating an already strong record.
Also called
- Thymalin
Not on file 10
8 of the 8 fields we track hold nothing on this record, and each says why. 2 further absences are named below. A blank field is a bug; a named absence is a finding.
- molecular weightnothing we hold supplies it
- molecular formulanothing we hold supplies it
- CAS registry numberthe reference database returned nothing for it
- PubChem identifierno source on file holds this
- amino-acid sequenceno source on file holds this
- SMILES stringthe reference database returned nothing for it
- InChInothing we hold supplies it
- InChI keynothing we hold supplies it
- half-lifenothing we hold supplies it
- route of administrationnothing we hold supplies it
Each field links to every other record missing the same thing. The full ledger holds 765 gaps across 163 records.
Listed prices 83
What 49 shops we track listed for Thymalin, read from their own public catalogues on 2026-09-14. We take no commission on these and they are not ranked by any payment — how vendors are scored.
Compare prices83 listings from 49 shops
| Vendor | Size | Price | Per mg |
|---|---|---|---|
| Soma - | 100 mg | $152.00 USD |
$1.52/mg |
| research1peptides | 20 mg | $35.00 USD | $1.75/mg |
| Peptide Works | 20 mg | $35.60 USD | $1.78/mg |
| Peptide Works | 100 mg | $190.76 USD | $1.91/mg |
| aminousa | 20 mg | $39.99 USD |
$2.00/mg |
| Evolve BioPep | 12 mg | $24.99 USD | $2.08/mg |
| Novaglo Research | 10 mg | $25.00 USD |
$2.50/mg |
| Peptide Pros ships worldwide | 50 mg | $131.60 USD |
$2.63/mg |
| Fusion Peptide | 13 mg | $42.99 USD | $3.31/mg |
| Pure Health Peptides (GLP Supplies) | 10 mg | $36.00 USD | $3.60/mg |
| Verified Peptides | 10 mg | $36.00 USD | $3.60/mg |
| peaklabpeptides.com | 10 mg | $37.00 USD |
$3.70/mg |
| Pure Health Peptides (GLP Supplies) | 5 mg | $19.00 USD | $3.80/mg |
| Hero Peptides | 10 mg | $39.00 USD | $3.90/mg |
| Fusion Peptide | 10 mg | $39.99 USD | $4.00/mg |
| Paramount Peptides | 20 mg | $80.75 USD | $4.04/mg |
| Penguin Peptides - | 10 mg | $45.00 USD | $4.50/mg |
| Peptide Crafters | 10 mg | $45.00 USD | $4.50/mg |
| Biotech Peptides | 25 mg | $114.00 USD | $4.56/mg |
| Umbrella Labs | 20 mg | $96.00 USD | $4.80/mg |
| Trulab Peptides | 10 mg | $49.00 USD | $4.90/mg |
| Pure Peptide Labs | 10 mg | $49.95 USD | $5.00/mg |
| AminoVault | 10 mg | $51.00 USD |
$5.10/mg |
| Oath Peptides | 20 mg | $110.00 USD | $5.50/mg |
| Oath Research | 20 mg | $110.00 USD | $5.50/mg |
| Core Peptides | 25 mg | $138.00 USD | $5.52/mg |
| Raw Amino | 25 mg | $138.00 USD | $5.52/mg |
| Ion Peptide | 10 mg | $59.00 USD | $5.90/mg |
| Peptira | 10 mg | $59.00 USD | $5.90/mg |
| Southern Aminos | 10 mg | $59.25 USD |
$5.92/mg |
| USA Peptide Sciences | 20 mg | $120.00 USD | $6.00/mg |
| Behemoth Labz | 20 mg | $120.97 USD | $6.05/mg |
| PureRawz ships worldwide | 20 mg | $121.47 USD | $6.07/mg |
| Behemoth Labz | 50 mg | $319.19 USD | $6.38/mg |
| atomiklabz | 10 mg | $65.00 USD | $6.50/mg |
| Oath Peptides | 10 mg | $65.00 USD | $6.50/mg |
| Oath Research | 10 mg | $65.00 USD | $6.50/mg |
| BulkGLP | 10 mg | $68.00 USD | $6.80/mg |
| Pure Lab Peptides | 10 mg | $69.99 USD | $7.00/mg |
| LIVV | 25 mg | $249.00 USD | $9.96/mg |
| Behemoth Labz | 5 mg | $78.98 USD | $15.80/mg |
| Royal Peptides | 10 mg | $390.00 USD | $39.00/mg |
| Eternal Peptides | size not listed | $23.99 USD |
— |
| Cosmic Peptides | size not listed | $34.99 USD | — |
| Nootropic Source | size not listed | $138.95 USD | — |
| Vendor | Size | Price | Per mg |
|---|---|---|---|
| Direct Peptides Canada | 20 mg | £20.57 GBP | £1.03/mg |
| Direct Peptides USA | 20 mg | £20.57 GBP | £1.03/mg |
| Pharma Lab Global Canada | 20 mg | £20.94 GBP | £1.05/mg |
| Direct Peptides Canada | 100 mg | £110.24 GBP | £1.10/mg |
| Direct Peptides USA | 100 mg | £110.24 GBP | £1.10/mg |
| Pharma Lab Global Canada | 100 mg | £110.61 GBP | £1.11/mg |
| Direct Peptides Canada | 100 mg | £119.22 GBP | £1.19/mg |
| Direct Peptides USA | 100 mg | £119.22 GBP | £1.19/mg |
| Pharma Lab Global Canada | 100 mg | £119.59 GBP | £1.20/mg |
| Direct Peptides Canada | 20 mg | £29.55 GBP | £1.48/mg |
| Direct Peptides USA | 20 mg | £29.55 GBP | £1.48/mg |
| Pharma Lab Global Canada | 20 mg | £29.92 GBP | £1.50/mg |
| Pharma Lab Global Canada | 20 mg | £32.95 GBP | £1.65/mg |
| Direct Peptides Canada | 20 mg | £33.59 GBP | £1.68/mg |
| Direct Peptides USA | 20 mg | £33.59 GBP | £1.68/mg |
| Pharma Lab Global Canada | 20 mg | £59.20 GBP | £2.96/mg |
| Direct Peptides Canada | 20 mg | £59.84 GBP | £2.99/mg |
| Direct Peptides USA | 20 mg | £59.84 GBP | £2.99/mg |
| Pharma Lab Global Canada | 20 mg | £65.90 GBP | £3.29/mg |
| Direct Peptides Canada | 20 mg | £67.18 GBP | £3.36/mg |
| Direct Peptides USA | 20 mg | £67.18 GBP | £3.36/mg |
| Pharma Lab Global Canada | 20 mg | £88.96 GBP | £4.45/mg |
| Direct Peptides Canada | 20 mg | £90.63 GBP | £4.53/mg |
| Direct Peptides USA | 20 mg | £90.63 GBP | £4.53/mg |
| Pharma Lab Global Canada | size not listed | £20.01 GBP | — |
| Direct Peptides Canada | size not listed | £24.24 GBP | — |
| Direct Peptides USA | size not listed | £24.24 GBP | — |
| Pharma Lab Global Canada | size not listed | £44.53 GBP | — |
| Direct Peptides Canada | size not listed | £44.99 GBP | — |
| Direct Peptides USA | size not listed | £44.99 GBP | — |
| Vendor | Size | Price | Per mg |
|---|---|---|---|
| Particle Peptides Canada | 20 mg | $51.25 CAD | $2.56/mg |
| Canada Steroid Depot | 10 mg | $50.00 CAD | $5.00/mg |
| Amino Peptides | 10 mg | $59.99 CAD | $6.00/mg |
| Polar Peptides | 10 mg | $59.99 CAD | $6.00/mg |
| Core Peptides Canada | 25 mg | $170.15 CAD | $6.81/mg |
| VPeptide Canada | 10 mg | $69.99 CAD | $7.00/mg |
| Pacific Peptides | 10 mg | $90.00 CAD | $9.00/mg |
| Toronto Peptides | size not listed | $70.00 CAD |
— |
None of these shops lists your destination. Choose “Show all” to see every listing we hold.
Prices are the vendor's own listing, reproduced with the date we read it — never converted between currencies, and compared per milligram only where the vendor states the vial size.