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Dietary supplement

D-Ribose 5 g Unflavored Ingredients & Drug Interactions

by Nutricost

D-Ribose 5 g Unflavored label
See full label image
Powder Category: Fiber And Other Nutrients
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking D-Ribose 5 g Unflavored 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 5 g Unflavored is a dietary supplement by Nutricost 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.

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Check Your Meds Against D-Ribose 5 g Unflavored by Nutricost

Ask about any prescription or over-the-counter medication and we check it for interactions with D-Ribose 5 g Unflavored by Nutricost — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of D-Ribose 5 g Unflavored by Nutricost

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 23, 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.

Nutricost D-Ribose is a single-ingredient powder: each serving contains 5 grams of D-ribose, a naturally occurring sugar that your cells use to make energy. There are no inactive ingredients listed.

Does it work?

Couldn't assess
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
Not assessable

This is a single-ingredient Ribose product and its label doesn't state a use — see Ribose's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

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, congestive heart failure, and recovery after coronary artery bypass surgery, we don't have enough reliable evidence to rate it either way — studies are either too small or results are inconclusive.

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 for up to one month. The most common side effects when taken orally are diarrhea, gastrointestinal discomfort, headache, nausea, and low blood sugar (hypoglycemia).

Some people report lightheadedness, increased appetite, mild anxiety, or a hyperanxious feeling — lowering the dose has resolved anxiety and nausea in some studies. Long-term safety isn't well studied, so caution is warranted with extended use.

There isn't enough safety data to use this during pregnancy or while breastfeeding — talk with your doctor or pharmacist for personalized advice.

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 this product, check your insulin and antidiabetes medications with your doctor or pharmacist. Ribose can lower blood sugar further, raising the risk of low blood sugar (hypoglycemia).

Both interactions are Moderate in severity.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

D-ribose might be worth considering if you're exploring it for athletic performance or heart-related conditions, but the evidence for those uses is thin. The main caution is blood sugar — if you take insulin or antidiabetes medication, you'll need to check your specific drugs and talk it over with your doctor or pharmacist before starting.

Stick to short-term use unless you've cleared it with them.

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 Jun 24, 2020.

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 5 g Unflavored, straight from the product label.

Brand Nutricost
Barcode (UPC) 702669932196
Net contents 250 Gram(s); 0.55 Pound(s)
Market status On market
Date entered into DSLD Jun 24, 2020
DSLD ID 223127
Product type Fiber And Other Nutrients
Supplement form Powder
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten 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 5 g Unflavored by Nutricost, 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:
2.5 Gram(s)
Maximum serving Sizes:
5 Gram(s)
Servings per container
50
UPC/BARCODE
702669932196
IngredientAmount% DV
D-Ribose5 Gram(s)--

Other ingredients: None

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.
Suggested/Recommended/Usage/Directions

Recommended Use: As a dietary supplement, mix 1/2 - 1 scoop with 8-12 oz of water 1-3 times daily, or as directed by your physician. On workout days, consume 1/2 - 1 scoop before exercise.

Precautions

Warning: Consult your physician prior to use if you are pregnant or nursing.

Consult your physician prior to use if you are taking any medications or have any medical condition.

Do not exceed recommended use.

Keep out of reach of children.

Do not use if safety seal is broken or missing.

Storage

Notice: Store in a cool, dry place.

General Statements

Contents are sold by weight, not volume. Some settling may occur.

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Formula

D-Ribose 5 g per serving Unflavored

FDA Statement of Identity

Dietary Supplement

Seals/Symbols

Nutricost Quality guaranteed 3rd party tested

Formulation

Non GMO Gluten free product

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

See for yourself

D-Ribose 5 g Unflavored by Nutricost label

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

D-Ribose 5 g Unflavored 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 5 g Unflavored by Nutricost

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

Serving size2.5 Gram(s) Dosage formPowder Servings per container50 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

Other (inactive) ingredients: None. These complete the product’s ingredient list but are not active constituents.

Interaction report

D-Ribose 5 g Unflavored by Nutricost Drug Interactions

Want to check YOUR meds against D-Ribose 5 g Unflavored?

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 5 g Unflavored interact with 86 drugs. Click any drug to see the details.

1 of the 1 ingredient in D-Ribose 5 g Unflavored 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 5 g Unflavored 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 5 g Unflavored, from the product label.

Nutricost

See all Nutricost products
Name
Nutricost
Street Address
351 E 1750 N
City
Vineyard
State
UT
ZipCode
84059
Phone Number
(866) 438-3694
Web Address
www.nutricost.com
Pharmacist Counseling Corner

D-Ribose 5 g Unflavored by Nutricost: Common Questions

Does D-Ribose 5 g Unflavored by Nutricost interact with any medications?
Yes. Based on its ingredients, D-Ribose 5 g Unflavored 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 5 g Unflavored 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 have diabetes or take insulin?
Not without checking first with your doctor or pharmacist. Ribose lowers blood sugar and can increase insulin levels, so combined with your diabetes medication it could push your blood sugar too low. Talk it over before you start.
What's the most common side effect?
Diarrhea, nausea, and gastrointestinal discomfort are the most common complaints when taking it by mouth. Headache and low blood sugar can also happen. In some cases, lowering the dose resolved nausea and anxiety.
Is D-ribose safe to use long-term?
It's generally well tolerated for up to a month, but long-term safety hasn't been well studied. If you're thinking of using it beyond that, check with your doctor or pharmacist first.
Does D-ribose actually improve athletic performance?
The evidence suggests it's probably not effective for that use. Studies have been inconsistent or unconvincing on this front.
Can I take this while pregnant or breastfeeding?
There isn't enough safety data either way, so it's best avoided during pregnancy and breastfeeding. Talk with your doctor or pharmacist about your individual situation before deciding.

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

Not sure if D-Ribose 5 g Unflavored is safe with your meds?

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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 5 g Unflavored label
Go deeper

The Full Monographs Behind D-Ribose 5 g Unflavored’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 5 g Unflavored'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

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