Barletta, Maria Angela, Marino, Gerardo, Spagnolo, Barbara et al. · Clinical and experimental medicine · 2023 · DOI
This study tested whether a combination of two supplements—coenzyme Q10 and alpha lipoic acid—could help people with chronic COVID syndrome who experience fatigue, muscle pain, and sleep problems. Researchers compared 116 people who took these supplements with 58 people who received no treatment. More than half of the people taking the supplements saw significant improvement in their fatigue, while only a small percentage of the untreated group improved.
ME/CFS and chronic COVID syndrome share core features of disabling fatigue and mitochondrial dysfunction, making mitochondrial-targeted interventions potentially relevant to both populations. This is the first published study examining this specific supplement combination for chronic COVID, providing preliminary evidence for a low-cost, accessible intervention that ME/CFS patients also commonly use. Positive findings warrant rigorous placebo-controlled trials to clarify whether observed benefits reflect specific nutrient effects or placebo response.
This observational study cannot establish causation—the treatment group's improvement could reflect selection bias, placebo effect, natural recovery, or regression to the mean rather than direct effects of the supplements. The lack of blinding and randomization means patients and clinicians knew who received treatment, potentially inflating perceived benefit. Baseline differences between groups and confounding variables (diet, activity, concurrent treatments) were not reported or controlled for.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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