○ Evidence tier 3 — Human RCT — functional endpoint

Record verify: primary source pending

DesignRandomized, double-blind, placebo-controlled crossover trial (functional/vascular)
N20
RegistryNCT02597023
DOI10.1161/HYPERTENSIONAHA.117.10787
Citation statusdoi verified via Crossref 2026-07-12 (Hypertension 2018;71(6):1056-1063, Rossman et al., 'Chronic Supplementation With a Mitochondrial Antioxidant (MitoQ) Improves Vascular Function in Healthy Older Adults'); NCT02597023 confirmed in the article's Clinical Trial Registration statement. PMID: needs_primary_fulltext.

Five-qualifier claim

Species / population20 healthy older adults (60-79 y) with impaired endothelial function.
Exposure, route, scheduleOral MitoQ 20 mg/day for 6 weeks.
Comparator / durationPlacebo-controlled, double-blind, randomized crossover.
Endpoint / numeric resultBrachial-artery flow-mediated dilation ~42% higher after MitoQ vs placebo; lower aortic stiffness (in those with elevated baseline) and lower plasma oxidised LDL.
What it did NOT establishSmall, short crossover with surrogate vascular endpoints — no clinical-outcome or lifespan evidence.

Interventions

Primary reference

https://doi.org/10.1161/HYPERTENSIONAHA.117.10787

Exact identifier confirmed against the primary record via Crossref/ClinicalTrials.gov where stated in the citation status; anything marked needs_primary_fulltext is not yet confirmed.