Any new or unusual symptom after dosing. Because this compound has little or no human safety data, there is no established list of 'expected' effects to reassure you against — treat anything abnormal as a signal.
Stop at the first clearly abnormal reaction and reassess. Keep the vial and lot number in case you need to describe what you actually took.
Any severe or fast-worsening symptom — difficulty breathing, chest pain, fainting, severe pain — is a 911 call regardless of the compound.
Allergic reaction: hives, swelling of the lips, tongue or throat, wheezing or dizziness can escalate to anaphylaxis within minutes — call 911 immediately. Site infection: spreading redness, heat, swelling, pus or fever is not wait-and-see; an abscess or cellulitis can need drainage or IV antibiotics. Unverified product: grey-market vials are frequently mislabelled or contaminated, so a reaction may be to endotoxin or the wrong contents, not the named compound.
A bovine thymic extract rather than a synthetic peptide, developed in the Soviet Union. Because the preparation is a mixture with no defined active constituent, no mechanism can be stated with precision — claims centre on general T-cell maturation effects inherited from thymic hormone biology.
Reports of immune restoration and even lifespan effects originate from Russian institutional research, largely outside mainstream peer review and without independent replication. Compositional variability alone makes the results difficult to interpret: different batches are not necessarily the same substance.
Not FDA-approved. Registered in Russia. Animal-derived biological material carries additional regulatory and contamination considerations.
No meaningful modern safety data. Animal-sourced, undefined composition — an unusual risk profile even by the standards of this library.
No standardised dose — it is an undefined thymic extract. Russian clinical reports use variable regimens that cannot be reproduced precisely between batches.
Reported from clinical trials or FDA labelling as a matter of record. It is not a recommendation, and for unapproved compounds no dose has been shown safe or effective in humans.
Above is what was administered in trials or on FDA labels, reported as fact. We do not convert it into a personal protocol, calculate a dose for your body weight, or tell you what to inject or how to reconstitute it — that decision belongs with a licensed physician. See our editorial policy.
Regulatory status changes. This page reflects our reading of public sources as of July 2026 and should be independently verified before it is relied upon.