Independent · non-commercial · publishes on a quarterly cycle|Current cycle 2026 Q3
Compound Evidence InstituteEvidence synthesis · established 2023Graded assessments of compounds, trials, methods and supply
Document set current to 30 July 2026
Compound monograph · §4

TB-500 — safety

Adverse events as reported, contraindications, warnings, and an explicit statement of what the safety evidence does not establish.

Document identifier
CEI-MN-031/4
Series
Compound monograph
Version
4.1
Published
13 Oct 2025
Last reviewed
13 Oct 2025
Next review
13 Oct 2027
Identifier
10.71829/cei.mono.31
Certainty
Very low
Cycle
2025 Q4

§4Safety

§4.1Adverse events reported in controlled trials

Table 4. Adverse events for TB-500 as reported in the trial safety tables the Institute holds. Percentages are of randomised participants in the stated trial and arm.

EventActive, %Comparator, %Difference, ppSource
Injection-site reactionReported anecdotally
No controlled human safety datasetNone exists for the fragment
Angiogenic mechanismIf the proposed angiogenic mechanism operates, consequences in occult neoplasia are unstudied
A difference column is computed by the Institute from the two reported percentages and is not itself a published figure. Confidence intervals for adverse-event differences are not reported in the contributing trials and are not constructed here.

§4.2Contraindications

  • Not established — no marketing authorisation

§4.3Warnings and precautions

  • No human data exist for the fragment as supplied
  • Trials of the full-length parent protein are frequently cited as though they supported the fragment; they do not
  • Prohibited in competitive sport at all times

§4.4What this section does not establish

Related assessments: tolerability of incretin receptor agonists · acute pancreatitis · the rodent thyroid C-cell signal.[1,2]

References cited on this page

References are numbered in order of first citation in this document. Each superscript in the text links to its entry below.

  1. Goldstein AL, Hannappel E, Sosne G, Kleinman HK. Thymosin β4: a multi-functional regenerative peptide. Basic properties and clinical applications. Expert Opinion on Biological Therapy 2012;12(1):37–51. doi:10.1517/14712598.2012.634793 · PMID 22074294
  2. Thevis M, Thomas A, Schänzer W. Detecting peptidic drugs, drug candidates and analogs in sports doping: current status and future directions. Expert Review of Proteomics 2019;11(6):663–673. doi:10.1586/14789450.2014.965158

Identifiers are reproduced only where the Institute holds them. Where a digital object identifier or PubMed identifier is not shown, the Institute has recorded the journal and year and has not constructed an identifier.

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