Rabanal-Ruiz · Antioxidants (Basel, Switzerland) 2021 · narrative review · n=?

The Use of Coenzyme Q10 in Cardiovascular Diseases.

Cited 97 times in the scientific literature.

Level 5 - mechanism / opinion, no new human data

Narrative review summarizing mechanisms and clinical evidence without systematic review methodology

PubMed 34068578 · doi:10.3390/antiox10050755 · record verified 2026-08-26

What was done

This narrative review summarized the physiological role of coenzyme Q10 (CoQ10) in mitochondrial bioenergetics and antioxidant defense, along with clinical evidence supporting its therapeutic use in cardiovascular diseases, endothelial dysfunction, and coronary artery bypass graft surgery.

What was found

The abstract reports that prolonged CoQ10 supplementation is safe and significantly increases plasma CoQ10 concentration to 3–5 µg/mL. It states that CoQ10 reduces oxidative stress and cardiovascular mortality, improves clinical outcomes in bypass surgery, prevents oxidized LDL accumulation, decreases vascular stiffness and hypertension, and improves endothelial function by lowering reactive oxygen species and raising nitric oxide levels. Specific effect sizes, numerical comparisons, and confidence intervals are not provided in the abstract.

Why it matters

It provides a concise overview of the mechanistic rationale and reported clinical applications of CoQ10 supplementation in age-related cardiovascular conditions.

Limits

As a narrative review, it lacks a systematic search protocol, risk of bias assessment, and quantitative meta-analysis. The number of included studies, sample sizes, patient populations, and numerical effect sizes for clinical endpoints are not reported in the abstract.

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