Thymosin Alpha-1
Zadaxin · Tα1 · Thymalfasin
Thymic peptide used as an immune modulator (Zadaxin in some countries).
A 28-amino-acid thymic peptide approved in several countries (not broadly in the US) as thymalfasin for immune support in viral hepatitis and as a vaccine adjuvant. Research use spans immune reconstitution.
Usual range
0.8–3.2 mg
Schedule
Twice weekly
Half-life
~2 hours
How it is used
Thymic peptide used as an immune modulator (Zadaxin in some countries).
Subcutaneous
Any consistent days (e.g. Mon/Thu).
4–12 weeks, or as a clinician directs around infection/vaccine.
How to mix this vial
Typical vial 1.6 mg · 1 mL BAC
1.6 mg kits are common. 1.6 mg + 1 mL → 1.6 mg/mL. 1.6 mg = 100 units.
Fridge.
Side effects
- Injection-site redness
- Feverish feeling
- Fatigue
Who should skip this
- Organ transplant / immunosuppressive therapy (discuss)
- Pregnancy
Nutrition note
Protein, sleep, and vitamin D matter more than an immune peptide alone.
Often paired with
Zadaxin/thymalfasin is approved in multiple countries. US availability is typically compounded, which is not the branded product.
Peptipedia is an educational calculator, not medical advice. Many catalog entries are unapproved for human use. Approved molecules have labels that outrank this app. Do not use this to self-prescribe. Consult a licensed clinician. Not for anyone under 18, pregnant, or being treated for cancer.