Teitelbaum, Jacob E, Johnson, Clarence, St Cyr, John · Journal of alternative and complementary medicine (New York, N.Y.) · 2006 · DOI
Researchers gave 41 patients with ME/CFS or fibromyalgia a natural sugar called D-ribose to see if it could help their symptoms. Two-thirds of patients reported feeling noticeably better, with improvements in energy, sleep, mental clarity, pain, and overall well-being. The supplement was well-tolerated with no serious side effects reported.
Energy metabolism dysfunction is a proposed mechanism in ME/CFS, making interventions targeting cellular ATP synthesis of interest. This study provides preliminary evidence that D-ribose may offer symptomatic benefit across multiple key domains affected by ME/CFS, warranting further investigation.
This study does not prove D-ribose is an effective treatment because it lacks a placebo control group, making it impossible to distinguish true drug effects from placebo response. The open-label design also introduces bias, as patients' expectations could influence symptom reporting. Additionally, a small pilot study cannot establish safety or efficacy for general use.
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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