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

Thymalin — safety

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

Document identifier
CEI-MN-041/4
Series
Compound monograph
Version
4.1
Published
15 Oct 2025
Last reviewed
15 Jul 2026
Next review
15 Jul 2028
Identifier
10.71829/cei.mono.41
Certainty
Very low
Cycle
2025 Q4

§4Safety

§4.1Adverse events reported in controlled trials

Table 4. Adverse events for Thymalin 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
Allergic reactionA bovine-derived extract carries an inherent immunogenicity and allergy risk that a synthetic peptide does not
Transmissible agent riskAny bovine-tissue-derived product carries a theoretical transmissible spongiform encephalopathy risk requiring documented sourcing controls
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

  • As stated in the Russian labelling
  • Known hypersensitivity to bovine protein

§4.3Warnings and precautions

  • Bovine-derived; sourcing and viral- and prion-safety documentation are essential and are not part of any research-supply certificate the Institute has assessed
  • Composition is undefined, so batch consistency cannot be verified analytically
  • Approval in one jurisdiction is not assessable efficacy evidence

§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. United States Pharmacopeial Convention. General Chapter ⟨85⟩ Bacterial Endotoxins Test. United States Pharmacopeia — National Formulary (USP–NF) 2024;USP 2024 Issue 1. identifier not held by the Institute
  2. United States Pharmacopeial Convention. General Chapter ⟨71⟩ Sterility Tests. United States Pharmacopeia — National Formulary (USP–NF) 2024;USP 2024 Issue 1. identifier not held by the Institute

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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