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
Independent evidence synthesis · established 2023 · cycle 2026 Q3

Evidence, graded and dated.

The Compound Evidence Institute publishes graded assessments of compounds, trials, analytical methods and supply documentation. It sells nothing, prescribes nothing and recommends nothing. Every surface is a dated document with a stated certainty, and where the Institute extrapolates rather than reports, the document says so at the point where it does it.

Certainty across 141 assessed outcomes
Distribution of certainty ratingsShare of assessed outcomes at each certainty level.141outcomes
High 17 Moderate 46 Low 30 Very low 48
1,621 documents in the registry 51 compound monographs 700 trial abstracts 140 evidence syntheses 18 standards 20 supplier dossiers 120 comment periods
Current cycle

Assessment cycle 2026 Q3

All cycles

The Institute ratifies documents quarterly. 554 documents carry 2026 Q3 as the cycle in which their current version was ratified. 11 public comment periods are open.

Documents ratified by assessment cycleCount of documents ratified in each quarterly assessment cycle.5182023 Q182023 Q292023 Q392023 Q41092024 Q1252024 Q2432024 Q3372024 Q4932025 Q1252025 Q2332025 Q3382025 Q4822026 Q1382026 Q25542026 Q3
Figure 1. Documents ratified in each quarterly assessment cycle since the Institute opened. The first cycle carries the founding backfill, in which the existing trial literature was admitted to the register in a single sitting. The current cycle carries the annual re-examination of the bibliography, the glossary and the register, which fall due together.
The document set

Series

51 documents

Compound monographs

Identification, pharmacology, graded clinical evidence, safety, regulatory status, analytical characterisation, supply considerations and a numbered record of evidence gaps. Eight parts per compound with a per-indication evidence extract for each assessed outcome.

700 documents

Trial abstracts

Structured abstracts with a field-by-field provenance table distinguishing extracted figures from Institute reconstructions, a design and population section, results, a domain-by-domain certainty assessment and the documents that cite each record.

140 documents

Evidence syntheses

Registered PICO frames, reproduced searches, included and excluded studies with reasons, summary-of-findings tables with a certainty rating per outcome, and an amendment log recording every change made after registration.

18 documents

Methodological standards

Scope, principle, apparatus, procedure, system suitability and acceptance criteria, and a worked example. Each states the performance a procedure must achieve rather than prescribing a fixed procedure.

20 documents

Supplier dossiers

Assessment of published documentation against a six-criterion weighted rubric with anchored scales. The Institute performs no independent testing and every dossier says so on its face.

31 documents

Indication assessments

One anchor outcome per indication so that estimates for different compounds are reported on a common measure, with the certainty of the evidence for every compound assessed in it.

Recently ratified

New in the registry

The full registry
What the evidence supports

Headline assessments

All syntheses
  • CEI-ES-001Intervention review12 contributing studies

    High certainty evidence indicates that glucagon-like peptide-1 receptor agonists reduce body weight substantially more than placebo over 56 to 104 weeks, with a placebo-subtracted effect that differs by agent and by dose across roughly a threefold range. The certainty is high for the existence and…

    High
  • CEI-ES-002Network meta-analysis24 contributing studies

    Moderate certainty evidence indicates that multi-receptor agonists produce a larger mean weight reduction than single glucagon-like peptide-1 receptor agonists. One head-to-head trial supports the comparison directly for tirzepatide against semaglutide; the remainder of the network is indirect. The…

    Moderate
  • CEI-ES-003Intervention review11 contributing studies

    High certainty evidence indicates that the class as a whole reduces major adverse cardiovascular events relative to placebo in the enrolled populations. The Institute nonetheless declines to describe the effect as a class effect: the neutral result of the lixisenatide trial and the borderline…

    High
  • CEI-ES-004Intervention review17 contributing studies

    Moderate certainty evidence from two randomised withdrawal trials indicates that a substantial proportion of the weight lost during treatment is regained after withdrawal, and that continued treatment is required to maintain the effect. The Institute regards this as the single most…

    Moderate
  • CEI-ES-005Safety review24 contributing studies

    High certainty evidence indicates that nausea, vomiting, diarrhoea and constipation are substantially more frequent with incretin receptor agonists than with placebo, that they are dose- and titration-rate-dependent, and that they attenuate with continued exposure in most but not all participants…

    High
  • CEI-ES-007Network meta-analysis24 contributing studies

    Moderate certainty evidence indicates that oral presentations can achieve efficacy in the range of injectable glucagon-like peptide-1 receptor agonists when sufficient doses are achieved, and that the bioavailability constraint of oral peptide delivery is overcome by dose escalation rather than by…

    Moderate
Consultation

Open comment periods

All consultations
  • Open until 07 Aug 2026series15 submissions so far

    Consultation on the draft certainty index, a cross-cutting finding aid that lists every assessed outcome in the document set by its certainty rating. The index makes it possible to see, in one place, how much of the Institute's output…

  • Open until 13 Aug 2026synthesis12 submissions so far

    Consultation on the draft of this intervention review, which registers the question: What randomised evidence supports mitochondria-targeted peptides in primary mitochondrial disease and in age-related functional decline?

  • Open until 15 Aug 2026monograph16 submissions so far

    Consultation on the draft monograph for SS-31 (elamipretide), which the assessment committee released for public comment before ratification. The draft grades the compound's principal assessed outcome at moderate certainty and states the…

  • Open until 15 Aug 2026standard13 submissions so far

    Consultation on the draft of CEI-MS-13, which specifies the performance a determination must achieve for method validation and states what the resulting figure does not establish. The draft states performance rather than prescribing a…

Working tools

Calculators

All tools

Reconstitution and insulin units

Concentration, injection volume, syringe units and doses per vial, with the graduation-error range stated.

Purity against peptide content

The arithmetic of delivered peptide mass, and whether a certificate permits a mass balance to be closed.

Certificate minimum-data checker

Score a certificate against the Institute’s minimum data standard, critical fields weighted separately.

Incretin dose equivalence

Illustrative equivalence anchored on placebo-subtracted weight change, refusing to extrapolate past each programme ceiling.

Nothing published by the Institute is medical advice, a diagnosis, a prescription, a treatment recommendation or a purchasing recommendation. Compounds supplied for research use are not approved for human or veterinary use in any jurisdiction, and a favourable analytical assessment of a supplier is not a statement that any product is safe or effective. The Institute publishes certainty ratings and never recommendations. No telephone number, messaging handle or ordering channel appears anywhere on this site.