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What is thymalin?

Thymalin explained in plain English: what it is, what the research shows, side effects, legal status and dosage. There is no validated human dose, and this page doesn't invent one. Also called Timalin, Thymus peptide extract.

Thymalin is used as a medicine in Russia but is not approved by the FDA or in Europe. This page is educational; talk with a qualified healthcare professional before using any substance.

What is thymalin?

Thymalin is a mixture of small peptides extracted from the thymus glands of calves. It was developed in the Soviet Union in the 1970s and 1980s by Vladimir Khavinson’s group and is used as an immune medicine in Russia.

It is one of the “peptide bioregulators”, a family of thymus, pineal and organ peptides from the same research school. See peptide bioregulators for the whole family.

What is thymalin used for?

In Russia it is used to support the immune system after infections, surgery, radiation and chemotherapy. Online it is sold for immunity and anti-aging.

What does the research on thymalin show?

Russian studies reported that elderly people given repeated yearly courses of thymalin, sometimes with epitalon, had better immune markers and lower death rates over many years. Those studies were small, often not randomized and haven’t been repeated by independent groups.

It is a different product from thymosin alpha-1, a single purified thymus peptide with much larger trials.

Thymalin side effects and risks

Few side effects are reported in Russian use, mainly injection-site reactions and allergy. Because it comes from animal tissue, purity and source matter, and products bought online may not be genuine.

Thymalin is not approved by the FDA or the European Medicines Agency, so it can’t be legally marketed in the US.

Thymalin dosage

Thymalin is dosed by its Russian labeling, which this site can't verify from an official English source, and it is not FDA-approved. There is no validated dose for anti-aging use.

There is no approved or validated human dose. This site does not repeat doses from forums, sellers or animal studies.

Medical disclaimer: this dosage information is for education only and comes from the source shown for each row. It is not medical advice and not a recommendation for you. Only a licensed prescriber who knows your health can decide whether Thymalin is right for you and at what dose. Don't start, change or stop a medicine based on this page, and don't use research peptides or unapproved drugs based on trial doses.

Frequently asked questions

What is the difference between thymalin and thymosin alpha-1?

Thymalin is a mixture of peptides extracted from calf thymus. Thymosin alpha-1 is one specific, purified thymus peptide that is approved in over 30 countries.

Does thymalin extend lifespan?

Russian studies in elderly people reported lower death rates with repeated courses, but those studies were small and haven't been repeated independently.

Is thymalin legal in the US?

It is not FDA-approved, so it can't be legally marketed in the US.

Sources

  1. Wikipedia, Vladimir Khavinson (thymalin research history)
  2. Empire Medical Training, Peptide bioregulators: Khavinson peptides and what the evidence shows

Last updated .

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