Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

D-Ribose Ingredients & Drug Interactions

by Klaire Labs

D-Ribose label
See full label image
Powder Category: Fiber And Other Nutrients
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking D-Ribose against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

D-Ribose is a dietary supplement by Klaire Labs with 1 active ingredient. Its ingredients are commonly taken for energy and fatigue, athletic performance and recovery, fibromyalgia symptoms.Based on those ingredients, 86 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are D-Ribose. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against D-Ribose by Klaire Labs

Ask about any prescription or over-the-counter medication and we check it for interactions with D-Ribose by Klaire Labs — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
Prefer a human? Send your question to our licensed pharmacists — free, answered by email within 24 hours.

HelloPharmacist Scorecard of D-Ribose by Klaire Labs

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: D-Ribose, a five-carbon sugar your body makes naturally and uses in energy production. There are no inactive ingredients listed for this powder.

Does it work?

Leans against
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Leans against

The strongest graded evidence we hold for the stated purpose leans against a benefit.

Why this rating?
  • The label markets this product for: Energy and physical performance support.
  • We looked for evidence on: Athletic performance, Chronic fatigue syndrome (CFS), Fibromyalgia, Congestive heart failure (CHF), Coronary heart disease (CHD), Cardiac function — and 2 related terms.
  • The closest evidence on file: Ribose is rated "Possibly Ineffective" for Athletic performance (Natural Medicines).
  • Also on file: Ribose is rated "Insufficient Reliable Evidence To Rate" for Coronary heart disease (CHD), Chronic fatigue syndrome (CFS), Congestive heart failure (CHF), Fibromyalgia.

The evidence for D-Ribose is mixed and limited. It's rated possibly ineffective for athletic performance and McArdle disease.

For restless legs syndrome, muscle soreness, heart failure, and recovery after heart bypass surgery, there isn't enough reliable evidence to say whether it works or not.

The evidence, ingredient by ingredient Ribose

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

D-Ribose is generally well tolerated in short-term use (up to about a month), but long-term safety hasn't been well studied. The main caution is that it can lower blood sugar.

Common side effects when taken by mouth include diarrhea, stomach discomfort, headache, nausea, and low blood sugar itself. A small number of people have reported anxiety, lightheadedness, or increased appetite — and in some cases, lowering the dose resolved these issues.

There isn't enough safety information to recommend D-Ribose during pregnancy or while breastfeeding. Talk with your doctor or pharmacist before using it if you're pregnant, planning pregnancy, or nursing.

Side effects, ingredient by ingredient Ribose

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Ribose.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: diabetes medications.
  • For scale: 86 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking D-Ribose, double-check it with your doctor if you're on insulin or any antidiabetes drug (oral or injected). Both carry a moderate risk that ribose could lower your blood sugar too much.

Altogether, these interactions span 85 individual medications.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with graded evidence leaning against its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

D-Ribose may appeal to people exploring natural support for energy or heart health, but the evidence for its benefits is weak or not yet established. If you take insulin or any diabetes medication, this product isn't a good fit without your doctor's oversight — the risk of low blood sugar is real.

Check your medications with us first.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Dec 21, 2024.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about D-Ribose, straight from the product label.

Brand Klaire Labs
Barcode (UPC) 828054001046
Net contents 10.58 Ounce(s); 300 Gram(s)
Market status On market
Date entered into DSLD Dec 21, 2024
DSLD ID 322271
Product type Fiber And Other Nutrients
Supplement form Powder
Dietary claims / uses Nutrient, All Other
Intended target group(s) Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for D-Ribose by Klaire Labs, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
5 Gram(s)
Maximum serving Sizes:
5 Gram(s)
Servings per container
60
UPC/BARCODE
828054001046
IngredientAmount% DV
Calories20 Calorie(s)--
D-Ribose5 Gram(s)--
Added Sugars5 Gram(s)10%
Total Sugars5 Gram(s)--
Total Carbohydrate5 Gram(s)2%

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formulation

Free of the following common allergens: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, soybeans, and yeast. Contains no artificial colors, flavors, or preservatives.

Vegetarian

Produced under a strict quality management system in compliance with Good Manufacturing Practices (GMPs) and third-party quality certifications.

Suggested/Recommended/Usage/Directions

Suggested use: 1 scoop daily mixed with water, juice, food, or as directed by a healthcare professional.

Formula

D-Ribose is a naturally-occurring five carbon (pentose) sugar found in all living cells. D-Ribose is only found in small amounts in the diet. The body must synthesize D-Ribose from glucose.

Precautions

Do not use if shrinkwrap is broken or missing.

Caution: If you are pregnant, nursing, have a medical condition, or taking prescription drugs, consult your healthcare professional before using this product.

Keep out of reach of children.

Storage

Store in a cool, dry place (59 degrees F-85 degrees F) away from direct light.

FDA Statement of Identity

Dietary Supplement

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

D-Ribose by Klaire Labs label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

D-Ribose label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in D-Ribose by Klaire Labs

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size5 Gram(s) Dosage formPowder Servings per container60 Amounts shown are per serving.

D-Ribose

Interacts with
86 drugs
5 Gram(s) per serving

Ribose (D-ribose) is a simple sugar your body makes naturally and uses to build energy molecules like ATP. Some people take it for fatigue, fibromyalg...

D-Ribose monograph & interactions
Interaction report

D-Ribose by Klaire Labs Drug Interactions

Want to check YOUR meds against D-Ribose?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
86Drugs
86 Moderate

Ingredients driving the most interactions

D-Ribose 86

Individual Drug Interactions

The ingredients in D-Ribose interact with 86 drugs. Click any drug to see the details.

1 of the 1 ingredient in D-Ribose interact with drugs. Each result below shows which ingredient is responsible. D-Ribose

Each ingredient & the kinds of drugs it affects

For each ingredient in D-Ribose with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

D-Ribose2 drug types · 86 drugs

Antidiabetes Drugs

Theoretically, taking ribose in combination with antidiabetes drugs might increase the risk of hypoglycemia.
In clinical research, ribose decreases serum glucose levels in a dose-dependent manner.

Likelihood Probable Evidence B
Insulin

Theoretically, taking ribose with insulin could increase the hypoglycemic effect of insulin.
In clinical pharmacokinetic studies, oral administration of ribose modestly increased serum insulin levels.

Likelihood Possible Evidence B
D-Ribose full monograph & interactions
The maker

Brand information

Manufacturer and brand details for D-Ribose, from the product label.

Klaire Labs

See all Klaire Labs products
Name
SFI USA
City
Reno
State
NV
ZipCode
89521
Web Address
Klaire.com
Pharmacist Counseling Corner

D-Ribose by Klaire Labs: Common Questions

Does D-Ribose by Klaire Labs interact with any medications?
Yes. Based on its ingredients, D-Ribose has a known interaction with 86 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
D-Ribose contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I take D-Ribose if I'm on diabetes medication?
Not without talking to your doctor first. Ribose lowers blood glucose and can boost the effect of insulin and other diabetes drugs, raising your risk of low blood sugar. Your doctor may need to adjust your dose or monitor your blood sugar closely if you use both.
What are the most common side effects?
When taken by mouth, the most common are diarrhea, stomach discomfort, headache, and nausea. Some people have also reported low blood sugar, anxiety, lightheadedness, and increased appetite. In studies, lowering the dose resolved nausea and anxiety in some cases.
Does D-Ribose really help athletic performance?
The evidence suggests it's not effective for that use. It's rated possibly ineffective for improving athletic performance based on the research we have.
Is it safe to take long-term?
It's generally well tolerated for short-term use (up to about a month), but long-term safety hasn't been well studied. If you're thinking of using it regularly, check with your pharmacist or doctor.
Can I take D-Ribose during pregnancy or while breastfeeding?
There isn't enough safety information, so it's best to avoid it during pregnancy and breastfeeding. Talk with your doctor or pharmacist for personalized advice if you're considering it while pregnant or nursing.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if D-Ribose is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

D-Ribose label
Go deeper

The Full Monographs Behind D-Ribose’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Ribose

Interacts with 86 drugs

Ribose (D-ribose) is a simple sugar your body makes naturally and uses to build energy molecules like ATP. Some people take it for fatigue, fibromyalgia, exercise recovery, or heart conditio...

Read the full Ribose monograph →
Sources

Sources & How We Checked

D-Ribose's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 8 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Ribose 8 references
  1. Segal S, Foley J. The metabolism of D-ribose in man. J Clin Invest 1958;37:719-35. PubMed
  2. Perlmutter NS, Wilson RA, Angello DA, et al. Ribose facilitates thallium-201 redistribution in patients with coronary artery disease. J Nucl Med 1991;32:193-200.
  3. Hegewald MG, Palac RT, Angello DA, et al. Ribose infusion accelerates thallium redistribution with early imaging compared with late 24-hour imaging without ribose. J Am Coll Cardiol 1991;18:1671-81. PubMed
  4. Pliml W, von Arnim T, Stalein A, et al. Effects of ribose on excercise-induced ischaemia in stable coronary artery disease. Lancet 1992;340:507-10.
  5. Burke ER. D-Ribose What You Need To Know. Garden City Park, NY: Avery Publishing Group 1999;1-43.
  6. Gross M, Reiter S, Zollner N. Metabolism of D-ribose administered continuously to healthy persons and to patients with myoadenylate deaminase deficiency. Klin Wochenschr 1989;67:1205-13. PubMed
  7. Teitelbaum JE, Johnson C, St Cyr J. The use of D-ribose in chronic fatigue syndrome and fibromyalgia: a pilot study. J Altern Complement Med 2006;12:857-62. PubMed
  8. Thompson J, Neutel J, Homer K, Tempero K, Shah A, Khankari R. Evaluation of D-ribose pharmacokinetics, dose proportionality, food effect, and pharmacodynamics after oral solution administration in healthy male and female subjects. J Clin Pharmacol 2014;54 PubMed

See these in context on the Ribose monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring
Supplement interaction checker › Check any supplement or product against your medications Drug–drug interactions › Check two or more of your medications against each other Browse medications A–Z › Every drug we've checked against herbs & supplements NDC & pricing lookup › Find a drug’s NDCs, packaging and costs Ask a pharmacist › Free, personal answer from our licensed team