Thymosin Alpha-1
Thymalin / Zadaxin
Mechanism of Action
Naturally occurring thymic peptide. Activates T-lymphocytes, NK cells, and dendritic cells, enhances cytokine production (IL-2, IFN-γ), and modulates the Th1/Th2 balance.
Key Benefits
- Potent immune system activation
- Antiviral activity (hepatitis B/C)
- Cancer immunotherapy support
- Post-COVID immune restoration
Dosing Protocol
FDA-approved in 35+ countries for hepatitis B/C and cancer immunotherapy support.
Ideal Candidates
Immune deficiency, chronic viral infections, cancer support, post-COVID.
Side Effects & Safety
Generally very well-tolerated. Mild injection site reactions.
Regulatory Status
RestrictedFDA Category 2 — on the do-not-compound list. Approved in 35+ countries as Zadaxin.
Frequently asked
What is Thymosin Alpha-1?+
Thymosin Alpha-1 (Thymalin / Zadaxin) is a peptide studied for immune activation and antiviral activity. Naturally occurring thymic peptide. Activates T-lymphocytes, NK cells, and dendritic cells, enhances cytokine production (IL-2, IFN-γ), and modulates the Th1/Th2 balance.
What is the dosing protocol for Thymosin Alpha-1?+
Literature commonly references 0.8 mg 2x/wk (low) to 1.6 mg 2x/wk (maintenance) via SubQ, on a 4–6 weeks cycle. Educational reference only — a licensed Stackhaus Health provider sets any personalized protocol.
What is the regulatory status of Thymosin Alpha-1?+
FDA Category 2 — on the do-not-compound list. Approved in 35+ countries as Zadaxin.
Where can I access Thymosin Alpha-1?+
Research-grade Thymosin Alpha-1 is available through Stackhaus Research. For a personalized, provider-reviewed protocol, consult a licensed clinician through Stackhaus Health.
More in Immune & Gut Health
Used in these stacks
Thymosin Alpha-1 appears in 2 research protocols in the Stackhaus Academy library.