- Formula
- C129H215N33O55
- Molecular weight
- 3108.3 g/mol
- CAS
- 62304-98-7
- PubChem CID
- 16130571 ↗

Vita Thymosin Alpha-1 10mg
Thymosin alpha-1 · Lyophilized powder (vial)
Add $204 more for free Xpresspost.
- Delivery guaranteeLost or seized: reshipped free
- Tracking in 72 hPacked in Vancouver
- Interace-TransferFrom any Canadian bank
- Plain packagingNo product names outside
Overview
Thymosin alpha-1 (thymalfasin) is a 28-amino-acid peptide from the thymus, approved in some countries to support the immune system in hepatitis B and C.
How it works
It promotes T-cell maturation and modulates immune signalling.
Chemistry
From PubChem, the US National Library of Medicine’s chemistry database.
Clinical reference
Where thymalfasin is approved, the amount is 1.6 mg under the skin twice a week. It is not approved in Canada.
Label and guideline amounts are shown for reference only. They are not a recommendation, and we never give cycle or performance amounts. Any use belongs under a doctor’s care, with bloodwork.
Measuring calculator
Converts an amount you enter into what to measure. It does not suggest an amount.
Strength used: 10 mg per vial
Injection sites
Thymosin Alpha-1 10mg is a freeze-dried powder. After mixing with bacteriostatic water, compounds like this are usually injected subcutaneously (subQ): into the fat just under the skin with a short insulin needle.
- Volume per site
- About 1 ml or less
- Needle
- 4 to 13 mm insulin needle, 29 to 31G
Finding it. Anywhere on the belly at least 5 cm from the navel, avoiding scars and the belt line. Pinch a fold of skin and inject into it.
Why it is used. The most-used subcutaneous site: easy to see, plenty of fat and steady absorption. Weekly GLP-1 pens list it first.
Watch out. Move each injection 2 to 3 cm from the last to avoid hard lumps.
- Volume per site
- About 1 ml or less
- Needle
- 4 to 13 mm insulin needle, 29 to 31G
Finding it. The middle of the front of the thigh, a hand-width below the hip and a hand-width above the knee.
Why it is used. Easy to reach seated and a good second site to rotate with the belly.
Watch out. Absorption can be a little slower than the belly.
- Volume per site
- About 1 ml or less
- Needle
- 4 to 13 mm insulin needle, 29 to 31G
Finding it. The fleshy back of the upper arm, halfway between shoulder and elbow.
Why it is used. A third site to rotate through so each spot rests longer.
Watch out. Hard to pinch and reach on yourself; a helper makes it easier.
Why these sites for Thymosin Alpha-1 10mg
Subcutaneous (subQ)- Belly first. The abdomen has the most fat and the steadiest absorption, and you can see what you are doing.
- Short needle, small volume. About 1 ml or less per spot with an insulin syringe. Pinch the skin if you are lean.
- Move every time. Keep each injection 2 to 3 cm from the last to avoid lumps.
Every time: wash your hands, wipe the vial stopper and skin with alcohol, use a new sterile needle and syringe, and never share. See a doctor for spreading redness, heat, swelling, pus, fever or numbness. This is general guidance from standard nursing practice, not medical advice; a pharmacist or nurse can show you in person.
Combinations and interactions
Prescribed or used alongside
- Needs bacteriostatic water and U-100 insulin syringes.
Drug interactions
- Immunosuppressants: may work against them.
Risks and bloodwork
The most common effect.
Caution with autoimmune disease or transplants.
Outside its approved uses, evidence is limited.
Use sterile technique.
Bloodwork doctors check
- No standard panel exists; a complete blood count and fasting glucose are a sensible baseline
Not for
People under 18, anyone pregnant or breastfeeding, anyone with active cancer or a history of cancer, and anyone with diabetes unless a doctor is involved.
Canadian legal status
Health Canada has not approved this compound for human use. It is sold for research purposes, and most sports bodies prohibit it. This is general information, not legal advice.
References
- Thymosin alpha 1: A comprehensive review of the literatureDominari A et al. · World J Virol, 2020 · PMID 33362999
- Thymosin alpha-1Ancell CD et al. · Am J Health Syst Pharm, 2001 · PMID 11381492
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FAQ
Is this thymosin beta-4?
No, that is TB-500. This is thymosin alpha-1.
Is it approved anywhere?
Yes, in several countries, not Canada.
How much is in the vial?
10 mg.
How fast will it arrive?
Orders ship from Vancouver by Canada Post Xpresspost. You get a tracking number within 72 hours of payment; delivery then takes 1 to 2 business days in BC, 3 to 4 in Ontario and 3 to 5 in Quebec.
What if my parcel is lost or seized?
We reship it free. Contact us with your order number.
Adults 18+. This page is general information, not medical advice. Talk to a licensed healthcare provider before using any compound.






