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D-Ribose Dosage Guide

Evidence:Preliminary
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This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

General Dosage

5 g three times daily (15 g total) for therapeutic use; 3-5 g pre/post-exercise for athletes

Maximum dose: 20 g/day; higher doses may cause GI distress or transient hypoglycemia

Dosage Recommendations

General recommendation: 5 g three times daily (15 g total) for therapeutic use; 3-5 g pre/post-exercise for athletes

Timing: Take with meals or before/after exercise; spread throughout the day for therapeutic use • Take with food for best absorption.

Dosage by Condition

Heart failure support
5 g three times dailyModerate
Athletic recovery
3-5 g post-exercisePreliminary
Fibromyalgia / CFS
5 g three times dailyPreliminary

Upper limit: 20 g/day; higher doses may cause GI distress or transient hypoglycemia

Timing & Absorption

Take with meals or before/after exercise; spread throughout the day for therapeutic use

Best taken with food for optimal absorption.

Full D-Ribose Guide

References

  1. RCTOmran H, Illien S, MacCarter D, et al. (2003). D-Ribose improves diastolic function and quality of life in congestive heart failure patients. European Journal of Heart Failure. DOI PubMed
  2. RCTPliml W, von Arnim T, Stäblein A, et al. (1992). Effects of ribose on exercise-induced ischaemia in stable coronary artery disease. The Lancet. DOI PubMed
  3. ObservationalTeitelbaum JE, Johnson C, St Cyr J (2006). The use of D-ribose in chronic fatigue syndrome and fibromyalgia: a pilot study. Journal of Alternative and Complementary Medicine. DOI PubMed
  4. Song Y, Du Y, An Y, Zheng J, et al. (2022). A systematic review and meta-analysis of cognitive and behavioral tests in rodents treated with different doses of D-ribose.. Frontiers in aging neuroscience. DOI PubMed
  5. Petrov I, Stoichev K, Aliman O, Kashilska Y, et al. (2025). Effects of differing nutritional supplementation combined with high-intensity aerobic interval training on functional exercise capacity, cardiac function, and quality of life in patients with heart failure and reduced ejection fraction: a randomized trial.. American journal of physical medicine & rehabilitation. DOI PubMed
  6. Yu X, Chen Q, Xu Lou I (2024). Dietary strategies and nutritional supplements in the management of heart failure: a systematic review.. Frontiers in nutrition. DOI PubMed
  7. RCTPierce JD, Shen Q, Mahoney DE, Rahman F, et al. (2022). Effects of Ubiquinol and/or D-ribose in Patients With Heart Failure With Preserved Ejection Fraction.. The American journal of cardiology. DOI PubMed
Show 3 more references
  1. Xue Y, Shamp T, Nagana Gowda GA, Crabtree M, et al. (2022). A Combination of Nicotinamide and D-Ribose (RiaGev) Is Safe and Effective to Increase NAD+ Metabolome in Healthy Middle-Aged Adults: A Randomized, Triple-Blind, Placebo-Controlled, Cross-Over Pilot Clinical Trial.. Nutrients. DOI PubMed
  2. Verrilli AM, Leibman NF, Hohenhaus AE, Mosher BA (2021). Safety and efficacy of a ribose-cysteine supplement to increase erythrocyte glutathione concentration in healthy dogs.. American journal of veterinary research. DOI PubMed
  3. RCTCao W, Qiu J, Cai T, Yi L, et al. (2020). Effect of D-ribose supplementation on delayed onset muscle soreness induced by plyometric exercise in college students.. Journal of the International Society of Sports Nutrition. DOI PubMed