○ Evidence tier 3 — Human RCT — functional endpoint

Record verify: source publication identified; see evidence and limitations

DesignRandomized, double-blind, placebo-controlled crossover trial (functional/vascular)
N24
RegistryNCT02597023
PMID29661838
DOI10.1161/HYPERTENSIONAHA.117.10787
Citation statusOriginal publication identity matched by title, author and DOI; relevant full-text sections, results and limitations examined 2026-10-14. The trial identifier is reported in the original source.

Identifiers: DOI verified; PMC verified; PMID verified; trial registry id reported, not independently verified. Record-level verification and identifier-level status are separate: a record can be verified against its primary publication on one identifier while another is simply not confirmed. No identifier is fabricated, and none is left in a “pending” state.

Five-qualifier claim

Species / population24 healthy adults aged 60–79 years with impaired endothelial function were randomized; 20 completed both six-week crossover periods.
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 establishThe primary functional endpoint was brachial-artery flow-mediated dilation, with a sample-size calculation targeting that measure. This small six-week crossover trial does not establish reduced clinical events, mortality or longer lifespan. The stiffness result was restricted to the elevated-baseline subgroup; mitochondrial ROS was not directly measured in this trial. Observed short-term tolerability does not establish broader or long-term safety.

Interventions

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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 names the source and the date. An identifier that is not confirmed is named as such in the identifier row above, never filled in from a secondary source.