Thymalin vs Thymosin Alpha-1
Thymalin: Thymus peptide extract (bioregulator). Thymosin Alpha-1: Thymic immune peptide (thymalfasin). Per milligram, Thymalin is cheaper right now (USD 0.480 vs USD 1.20 at the cheapest tested vendor). Thymosin Alpha-1 has stronger published evidence (grade B vs C). Prices per mg compare cost, not effect: the amounts used in studies differ between compounds.
Thymalin
A peptide complex extracted from calf thymus, used in Russia to support immune function, especially in older people.
- What it is
- Thymus peptide extract (bioregulator)
- Category
- Inflammation & immune
- Status
- Approved in Russia; not approved in the US.
- Cheapest
- USD 0.480 per mg (Huaian Dinglin Trading)
- Median price
- USD 2.70 per mg
- Vendors
- 22 independently tested, 2 with a lab report
- Research
- Grade C: Mostly animal studies (9 papers)
- Studied as
- studied in people
Thymosin Alpha-1
A 28-amino-acid peptide from the thymus that boosts T-cell function. Used clinically as an immune modulator for hepatitis B and C and as a vaccine adjuvant.
- What it is
- Thymic immune peptide (thymalfasin)
- Category
- Inflammation & immune
- Status
- Approved in several countries as Zadaxin; not FDA-approved.
- Cheapest
- USD 1.20 per mg (BeiBangAn)
- Median price
- USD 5.00 per mg
- Vendors
- 68 independently tested, 15 with a lab report
- Research
- Grade B: Some human evidence (8 papers)
- Studied as
- studied in people
Cheapest tested vendors for Thymalin and Thymosin Alpha-1
Lowest price per milligram at up to three independently tested vendors each. Rankings are by price only; open a vendor to see its lab results.
| Peptide | Vendor | Per mg |
|---|---|---|
| Thymalin | Huaian Dinglin Trading | USD 0.480 |
| BeiBangAn | USD 0.550 | |
| LN Peptides | USD 0.550 | |
| Thymosin Alpha-1 | BeiBangAn | USD 1.20 |
| LN Peptides | USD 1.20 | |
| Uther | USD 1.45 |
Questions people ask
What is the difference between Thymalin and Thymosin Alpha-1?
Thymalin: Thymus peptide extract (bioregulator). Thymosin Alpha-1: Thymic immune peptide (thymalfasin). Per milligram, Thymalin is cheaper right now (USD 0.480 vs USD 1.20 at the cheapest tested vendor). Thymosin Alpha-1 has stronger published evidence (grade B vs C). Prices per mg compare cost, not effect: the amounts used in studies differ between compounds.
Which is cheaper, Thymalin or Thymosin Alpha-1?
Thymalin is cheaper per mg: USD 0.480 for Thymalin vs USD 1.20 for Thymosin Alpha-1 at the cheapest independently tested vendor. The median listing is USD 2.70 per mg for Thymalin and USD 5.00 per mg for Thymosin Alpha-1.
Which is easier to find from a tested vendor, Thymalin or Thymosin Alpha-1?
Thymosin Alpha-1 is sold by more independently tested vendors: 22 list Thymalin (2 publish a lab report for it) and 68 list Thymosin Alpha-1 (15 with a lab report).
Which has more published research, Thymalin or Thymosin Alpha-1?
Thymalin is graded C (mostly animal studies) from 9 papers and Thymosin Alpha-1 is graded B (some human evidence) from 8 papers. Grades count studies of the exact compound only; they describe how much evidence exists, not which one is better.
Are Thymalin and Thymosin Alpha-1 FDA approved?
Thymalin: Approved in Russia; not approved in the US. Thymosin Alpha-1: Approved in several countries as Zadaxin; not FDA-approved.