Glutathione in cognitive performance and neuroprotection — evidence extract
The Institute's graded assessment of Glutathione for cognitive performance and neuroprotection, with the contributing trials and the domain-by-domain certainty reasoning.
§1Evidence extract: Cognitive performance and neuroprotection
§1.1Question and anchor outcome
- Population
- Domain-specific cognitive function or protection against cognitive decline, assessed by standardised neuropsychological batteries or clinical dementia rating.
- Intervention
- Glutathione, intravenous, nebulised, topical or oral; subcutaneous and intramuscular in research contexts
- Comparator
- As used in each contributing trial; reported per trial rather than pooled across comparator types
- Anchor outcome
- Domain-specific cognitive test scores
Additional outcomes the Institute extracts for this indication: Clinical Dementia Rating sum of boxes; Biomarker change (amyloid, tau, neurofilament light).
§1.2Contributing trials
Table 1. Trials contributing to the assessment of Glutathione in cognitive performance and neuroprotection.
| Trial | Phase | Design | Randomised | Duration | Year |
|---|---|---|---|---|---|
| GSH-PD-PH2 | 2 | Randomised, double-blind, placebo-controlled | 45 | 3 months | 2017 |
§1.3Certainty assessment
Table 2. Reasoning recorded against each certainty domain.
| Domain | Rating | Reasoning |
|---|---|---|
| Risk of bias | Very serious | Differential attrition exceeded the pre-specified threshold in one arm. |
| Inconsistency | No concern | No serious concern identified in this domain. |
| Indirectness | No concern | No serious concern identified in this domain. |
| Imprecision | No concern | No serious concern identified in this domain. |
| Publication bias | No concern | No serious concern identified in this domain. |
| Overall rating: Low certainty. Confidence in the effect estimate is limited. The true effect may be substantially different from the estimate. | ||
§1.4What this extract does not establish
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.
- D’Hondt M, Bracke N, Taevernier L, Gevaert B, Verbeke F, Wynendaele E, De Spiegeleer B. Related impurities in peptide medicines. Journal of Pharmaceutical and Biomedical Analysis 2014;101:2–30. doi:10.1016/j.jpba.2014.06.012 · PMID 25044089
- Manning MC, Chou DK, Murphy BM, Payne RW, Katayama DS. Stability of protein pharmaceuticals: an update. Pharmaceutical Research 2010;27(4):544–575. doi:10.1007/s11095-009-0045-6 · PMID 20143256
- 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
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.