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Longevity & immune system

Thymalin: Effects, Evidence and Risks

Research use only: Thymalin is not approved as a medicine in Germany or the EU (approvals exist only in individual countries outside the EU). It is offered as a research substance labelled “for research purposes only – not for use in humans or animals”. This page summarises the state of research and is not a recommendation to use it.

Also known as Thymalin, timalin, thymus peptide complex.

StatusApproved outside the EU only
EvidenceSmall human studies
Drug classPeptide extract from calf thymus (“immunomodulator”) · injection
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We only show doses for approved medicines according to the prescribing information – in the calculator.

What is Thymalin?

Thymalin is a mixture of peptides extracted from the thymus of calves. It is claimed to regulate cellular immunity and was originally developed in Soviet military medicine.

How well studied is Thymalin?

The studies come almost exclusively from the developer group around Vladimir Khavinson, including a study of 266 older people that reported lower mortality. Independent confirmation and large studies by today's standards are lacking.

What side effects and risks does Thymalin have?

The claim that it has no side effects comes from the developers themselves; systematic, independent safety data are lacking. As an extract from animal tissue, allergic reactions and batch variability are to be expected; grey-market products add sterility and contamination risks.

Is Thymalin approved in Germany?

In short: no – only outside the EU. Approved as a medicine in Russia and some CIS countries, not in the EU/Germany. Import and use are subject to the German Medicines Act (AMG); in sport, unapproved substances fall under WADA S0. High quality risk with online products.

Sources

Note: We deliberately do not list any doses here. For approved medicines, your doctor sets the dose; for unapproved substances there is no reliable information.