✓
No active regulatory warnings
Sources: FDA MedWatch, EMA EudraVigilance, WHO VigiBase, WADA Prohibited List · 2026-05-29
Updated: 2026-05-29 · v2.0 · Prof. G. Pkhakadze, MD, MPH, PhD📎 Cite 📄 PDF
1 Identity

D-Ribose

D-Ribose
Generally SafeEvidence: LimitedOther
D-Ribose is a pentose sugar that is a structural component of ATP (adenosine TRI-phosphate), RNA, and NADH. It accelerates ATP resynthesis in ischemic or energy-depleted tissues (heart, skeletal muscle) [1]. Some evidence supports use in heart failure (improved diastolic function) and fibromyalgia/CFS (improved energy), though trials are small [2]. It is marketed as an 'energy supplement' but works through ATP synthesis, not stimulation [1].
1
D-Ribose
D-Ribose
Generally SafeEvidence: LimitedOther
Clinical verdict: D-Ribose is the sugar backbone of ATP — accelerates ATP resynthesis in energy-depleted tissues. Small trials positive for heart failure diastolic function and CFS/fibromyalgia energy. NOT a stimulant (metabolic, not neurological). May lower blood glucose. 5 g TID [1] [2].
RDA
Typical 5–15 g
Target range
Monitor for hypoglycemia
Upper limit
No UL
Evidence
Limited
Population dosing — click to filter
🔗 Best with: CoQ10, L-Carnitine, Creatine✅ USP Verified, NSF Contents Certified, ConsumerLab Approved
2 Risk self-assessment
Not applicable — not an essential nutrient [1]
Select factors above to see your risk level
Clinical pearl for practitioners
SupplementIndex
D-Ribose
D-Ribose · Generally Safe · Evidence: Limited
RDA
Typical 5–15 g
Upper limit
No UL
Evidence
Limited
Clinical bottom line
D-Ribose is the sugar backbone of ATP — accelerates ATP resynthesis in energy-depleted tissues. Small trials positive for heart failure diastolic function and CFS/fibromyalgia energy. NOT a stimulant (metabolic, not neurological). May lower blood glucose. 5 g TID [1] [2].
Do not miss
⚠ May cause hypoglycemia — monitor glucose in diabetics [1]
⚠ NOT a stimulant — works through ATP resynthesis, not CNS [1]
⚠ Small trial base — needs larger RCTs [2]
Pregnancy
No data [1].
4 Dietary sources
mg
Endogenously synthesized. Not a significant food component [1].
5 Lab interpreter

Blood glucose

<12 Deficient
12–20 Insufficient
20–50 Optimal
50–100 Excess
>150 Toxic
Your level:
Enter a value above
⚕ For healthcare professionals. Does not replace clinical judgment.
6 Quick facts
CategoryOther
Safety levelGenerally Safe
EvidenceLimited
RDATypical 5–15 g
Upper limit (UL)No UL
Scientific nameD-Ribose
Chemical classPentose sugar (5-carbon monosaccharide) [1]
ATP roleStructural component of ATP, RNA, NADH, FADH2 [1]
MechanismAccelerates ATP resynthesis in ischemic/depleted tissue [1]
Heart failureSmall trials: improved diastolic function [2]
CFS/fibromyalgiaSmall pilot positive for energy/well-being [2]
Typical dose5–15 g/day in divided doses [2]
7 Dosage by population

Adults Moderate

See product label

Elderly Moderate

See product label
Consider reduced renal/hepatic clearance. Start at lower end of range.

Pregnancy Moderate

See guidance
No data [1].

Pediatric Moderate

See guidance
No data [1].

Athletes Limited

Standard dose

Obesity Limited

Standard dose
Fat-soluble compounds may require dose adjustment in obesity.

Renal Limited

Consult specialist
Dose adjustment may be needed in renal impairment.

Vegan Moderate

Standard dose
5 g TID for heart failure/CFS. 3–5 g pre-workout for exercise. Sweet taste — dissolves in beverages. May lower blood glucose (it IS a sugar but enters pentose pathway, not glycolysis) [1] [2].
8 Form comparison
FormBioavailabilityVeganCost/day
['D-Ribose powder', 'common', 'Sweet taste. 5 g per tsp. 5–15 g/day divided [1].']StandardCheck label
9 Clinical evidence

Strong evidence

ATP structural component: basic biochemistry [1]. Accelerates ATP resynthesis post-ischemia: confirmed in animal and cell models [1]. HIGH

Moderate evidence

Heart failure: small trials showed improved diastolic function and exercise tolerance [2]. CFS/fibromyalgia: one pilot (n=41) — 66% reported significant improvement in energy and well-being [2]. MODERATE

Insufficient evidence

Exercise performance in healthy athletes [1]. Cognitive function [1]. Post-surgical recovery [1]. LOW
10 Safety

🚩 Red flags — when to stop and refer

● Diabetic patient — hypoglycemia risk [1]

Pregnancy

No data [1].

Pediatric

No data [1].
11 Toxicity and overdose

12 Drug interactions
Insulin/diabetes medications Moderate
Mechanism: D-ribose may lower blood glucose. [1]
Effect: Hypoglycemia. [1]
Action: Monitor glucose [1].
13 Supplement interactions

Best combined with

CoQ10 + L-Carnitine · 100–200 mg CoQ10 + 500–1,000 mg carnitine
Mitochondrial energy triad: ribose (ATP backbone) + CoQ10 (electron transport) + carnitine (fatty acid transport) [1].
14 Laboratory monitoring
Blood glucose Primary
Target: Monitor for hypoglycemia · If diabetic [1].
D-ribose may lower glucose [1].
15 Deficiency and prevalence
0%
[1]

Risk factors

• Not applicable — not an essential nutrient [1]
16 Frequently asked questions
Does D-ribose give energy like caffeine? ▼
No — completely different mechanism. Caffeine blocks adenosine (stimulant). D-ribose provides the sugar backbone for ATP resynthesis (metabolic). No stimulatory 'buzz' — it supports cellular energy production [1].
Can D-ribose lower blood sugar? ▼
Yes — it has been reported to cause hypoglycemia in some individuals. Monitor glucose, especially in diabetics [1].
17 Regulatory status
United States: GRAS. Dietary supplement [1].
18 References
[1]Shecterle LM, et al. The patented uses of D-ribose in cardiovascular diseases. Recent Pat Cardiovasc Drug Discov. 2010;5(2):138-142. doi:10.2174/157489010791515241 REVIEW
[2]Teitelbaum JE, et al. The use of D-ribose in chronic fatigue syndrome and fibromyalgia: a pilot study. J Altern Complement Med. 2006;12(9):857-862. doi:10.1089/acm.2006.12.857 REVIEW
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20 Cite this page
Vancouver
Pkhakadze G. D-Ribose — safety profile [Internet]. Tbilisi: Public Health Institute of Georgia; 2026 [cited 2026 May 30]. Available from: https://supplement.ge/ingredients/d-ribose/
APA 7th
Pkhakadze, G. (2026). D-Ribose — Safety profile. Public Health Institute of Georgia. https://supplement.ge/ingredients/d-ribose/
CC BY 4.0
🛡 SupplementIndex receives no funding from supplement manufacturers. All content independently authored by PHIG.
GP
Reviewed by Prof. G. Pkhakadze, MD, MPH, PhD
Editor-in-Chief, Georgian Medical Journal · Chair, PHIG
Last reviewed: May 2026 · Next: November 2026
This entry is provided for educational and public health purposes under CC BY 4.0. Consult your healthcare provider before starting any supplement. For corrections: info@accreditation.ge.
Publisher: PHIG · Editor-in-Chief: Prof. Giorgi Pkhakadze, MD, MPH, PhD