TA-1
Monograph · BThymosin Alpha-1
28-amino acid peptide that primes T-cell maturation and rebalances innate immune response.
How it clearsHalf cleared in ~2h. Most (~96%) gone by ~10h.
Synthetic version of an endogenous thymic peptide. Approved as Zadaxin in 35+ countries for hepatitis B/C and as adjuvant therapy. Modulates TLR9 signaling, expands T-cell repertoires. Recovery use is off-label, framed around immune resilience after intense training or illness.
Strong tissue-level evidence — but the signal window almost always arrives later than expected. Most users anticipate change by week 2. Literature consistently places the first measurable marker at weeks 3–5. If nothing feels different by day 14, that's not failure — that's still inside the window.
Not FDA-approved as Zadaxin in the US. Dose for recovery off-label use is heuristic — clinical doses are for hepatitis indications.
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- BModerate evidence
Thymosin alpha-1 modulates T-cell function and is approved in several countries outside the US
1 supporting referencesVerified 23d ago
External links to PubMed searches, ClinicalTrials.gov, and FDA materials. We do not host papers — we point at canonical sources.
Pre-filled with this compound's published dose range: 1.6 mg · twice weekly, subcutaneous
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