Thymosin Alpha-1 Dosage Calculator & Research Doses

1Set Up Your Mix

3.333 mg/mL · 3333 mcg/mL

1. Pick your peptide

2. How much peptide is in the vial? It's printed on the label — usually something like 5 mg

3. How much water are you adding? More water makes each dose easier to measure

4. How much do you want per dose?

All answers assume a standard 1 mL U-100 syringe, where 1 unit = 0.01 mL. That is the usual insulin syringe and the one every number here is based on.

Your Answer — Thymosin Alpha-1Your Answer

—

24Draw To This Line

0.24That's This Many mL

6Doses In The Vial

5 mg ÷ 1.5 mL = 3.333 mg/mL → 0.8 mg ÷ 3.333 mg/mL = 0.24 mL → × 100 = 24 units—

Looks good. Draw to 24 units on a 1 mL syringe. That is an easy amount to measure, and this vial gives you 6 doses.

2Week-By-Week Plan — Thymosin Alpha-1

Start low, work up

When	Dose	How Often	How Many mL	Draw To	Number Of Doses
Label dose	1.6 mg	2× weekly	0.48 mL	48 u	3 doses
Lower reported	0.8 mg	2× weekly	0.24 mL	24 u	6 doses
Higher reported	3.2 mg	2× weekly	0.96 mL	96 u	1 doses

Weeks until the top dose

4 weeks

Peptide used getting there

9.6 mg

Vials you'll need

2 × 5 mg

Once you're at the top dose

25.6 mg / 4 wk · 5.12 vials

Where this plan came from

Built from this peptide's dose range

Where this came from: Built from the doses listed for this peptide below — start at the lowest and step up, using the studies cited on this page. Nobody publishes a week-by-week plan for this peptide, so we built one: the doses are the researched ones shown below, and we simply put them in order from lowest to highest. Treat it as a starting point, not an official schedule.

3Common Doses — Thymosin Alpha-1

worked out for your mix

Level	Dose	How Often	How Many mL	Draw To	Doses In Vial
Weeks 1–2	0.8 mg	twice weekly	0.24 mL	24 u	4	3.2 mg
Weeks 3–4	1.6 mg	twice weekly	0.48 mL	48 u	4	6.4 mg
Week 5 onward per 4 weeks from here on	3.2 mg	twice weekly	0.96 mL	96 u	8	25.6 mg

Please read this. These numbers come from published research. They are here as reference, not as instructions. A lot of them come from lab studies rather than studies in people, and some of these peptides have never been given to a person at all.

About Thymosin Alpha-1About This Peptide

Immune & Anti-microbial

Also known as

Tα1, Thymalfasin, Zadaxin

Class

Immune & Anti-microbial

Route

Subcutaneous

Half-life

~2 h

Evidence tier

Clinical

A thymic peptide approved in a number of countries as an immunomodulator, principally as adjunct therapy in chronic hepatitis B and C. One of the better-evidenced compounds here, with a defined label dose.

Buy Thymosin Alpha-1this peptide

Opens optimal-pep.com in a new tab

Where These Numbers Come From

Clinical — Human trial or approved-label dosing published

Thymosin alpha 1 — biological activities and clinical applications Garaci E, et al. Annals of the New York Academy of Sciences / Expert Opinion, 2007–2012

Consolidated clinical review including the 1.6 mg twice-weekly standard.

Find on PubMed ↗

Thymalfasin in chronic hepatitis B — meta-analysis Various, Journal of Viral Hepatitis, 2000s

Aggregate efficacy data at the label dose.

Find on PubMed ↗

Newest Studies — —

—

Not reviewed by us. This list is pulled straight from Europe PMC as papers are published. Nobody has checked whether these are any good, or whether they change anything above. The dose numbers on this page only ever change after a person reviews the evidence.

Research Use Only — Confirm to Continue

Thymosin Alpha-1 Dosage & Reconstitution