Drug & supplement interaction

Nicotinamide Riboside + Diclofenac Sodium

Diclofenac Sodium brand names: Voltaren XR, Voltaren, Voltaren SR, Diclo, Difenac, and others.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 27, 2026
The bottom line No known interaction

We found no known interaction between Nicotinamide Riboside and Diclofenac Sodium in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Nicotinamide Riboside and Diclofenac Sodium

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Diclofenac Sodium and Nicotinamide Riboside in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Nicotinamide Riboside safety at a glance

Nicotinamide Ribos... overall Use caution Appears well tolerated in short-term studies, but long-term safety is not fully known.
Pregnancy Possibly Safe When nicotinamide riboside chloride is used orally and appropriately. The European Food Safety Authority has determined that taking nicotinamide riboside chlori... Read the full pregnancy detail
Breastfeeding Possibly Safe When nicotinamide riboside chloride is used orally and appropriately. The European Food Safety Authority has determined that taking nicotinamide riboside chlori... Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Diclofenac Sodium and Nicotinamide Riboside? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Diclofenac Sodium

Interactions in our licensed database are recorded against drug classes, not just single drug names. Diclofenac Sodium is filed under 11 classifications — including nonsteroidal anti-inflammatory drugs (nsaids), cytochrome p450 2c9 (cyp2c9) substrates, anticoagulant/antiplatelet drugs. Nicotinamide Riboside has documented interactions with 1 drug class — the most serious being antihypertensive drugs (minor) — and none of Diclofenac Sodium’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Nicotinamide Riboside Does Interact With Other Medications

Nicotinamide Riboside has 172 minor known drug interactions in our database — Diclofenac Sodium isn’t one of them. If you take anything else, check it against the full list below.

Minor 172 No known interaction 2,658 (incl. Diclofenac Sodium)
Taking anything else?

Check Another of Your Medications Against Nicotinamide Riboside

Covers the 2,830 medications we’ve checked against Nicotinamide Riboside. Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests Nicotinamide Riboside and Diclofenac Sodium May Share Several of the Same Side Effects

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do.

  • Flushing / A skin rash reported in 7.0% of FDA reports for Diclofenac Sodium Additional detail

    Nicotinamide Riboside

    “Orally, mild cases of flushing, skin rash, pruritus, and excessive sweating have been reported in clinical trials for some patients taking nicotinamide riboside (Niagen, ChromaDex). However, flushing and skin rash were reported at the same rate in patients receiving placebo.”

    Nicotinamide Riboside · Natural Medicines adverse-effect record, reported in pruritus.

    2 sources cited
    1. 94744. Martens CR, Denman BA, Mazzo MR, et al. Chronic nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults. Nat Commun 2018;9(1):1286. PubMed
    2. 94745. Dollerup OL, Christensen B, Svart M, et al. A randomized placebo-controlled clinical trial of nicotinamide riboside in obese men: safety, insulin-sensitivity, and lipid-mobilizing effects. Am J Clin Nutr 2018;108(2):343-53. PubMed

    Diclofenac Sodium

    Listed in the ADVERSE REACTIONS section of the FDA label for Diclofenac Sodium, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

  • Bloating or gas / Nausea reported in 6.1% of FDA reports for Diclofenac Sodium Additional detail

    Nicotinamide Riboside

    “Orally, mild cases of nausea, bloating, and transient changes in stools have been reported in clinical trials for some patients taking nicotinamide riboside (Niagen, ChromaDex).

    Other gastrointestinal adverse effects such as abdominal discomfort, diarrhea, and dyspepsia have been reported with oral use of a combination product (Basis, Elysium Health) containing nicotinamide riboside and pterostilbene.”

    Nicotinamide Riboside · Natural Medicines adverse-effect record, reported in diarrhea.

    4 sources cited
    1. 94744. Martens CR, Denman BA, Mazzo MR, et al. Chronic nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults. Nat Commun 2018;9(1):1286. PubMed
    2. 94745. Dollerup OL, Christensen B, Svart M, et al. A randomized placebo-controlled clinical trial of nicotinamide riboside in obese men: safety, insulin-sensitivity, and lipid-mobilizing effects. Am J Clin Nutr 2018;108(2):343-53. PubMed
    3. 102035. Conze D, Brenner C, Kruger CL. Safety and metabolism of long-term administration of NIAGEN (nicotinamide riboside chloride) in a randomized, double-blind, placebo-controlled clinical trial of healthy overweight adults. Sci Rep 2019;9(1):9772. PubMed
    4. 94747. Dellinger RW, Santos SR, Morris M, et al. Repeat dose NRPT (nicotinamide riboside and pterostilbene) increases NAD+ levels in humans safety and sustainably: a randomized, double-blind, placebo-controlled study. NPJ J Aging Mech Dis 2017;3:17.

    Diclofenac Sodium

    Listed in the ADVERSE REACTIONS section of the FDA label for Diclofenac Sodium, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

  • Stomach upset / Diarrhea reported in 6.2% of FDA reports for Diclofenac Sodium Additional detail

    Nicotinamide Riboside

    Recorded for Nicotinamide Riboside in the same Natural Medicines adverse-effect record shown under Bloating or gas / Nausea above.

    Diclofenac Sodium

    Listed in the ADVERSE REACTIONS section of the FDA label for Diclofenac Sodium, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

  • Sweating / Itching Additional detail

    Nicotinamide Riboside

    Recorded for Nicotinamide Riboside in the same Natural Medicines adverse-effect record shown under Bloating or gas / Nausea above.

    Diclofenac Sodium

    Listed in the ADVERSE REACTIONS section of the FDA label for Diclofenac Sodium. Read the label on DailyMed ›

  • Muscle pain Additional detail

    Nicotinamide Riboside

    “Orally, leg cramps were reported in one clinical trial for one patient taking nicotinamide riboside (Niagen, ChromaDex). Some patients taking this specific nicotinamide riboside product in another clinical trial have reported mild muscle pain or soreness.”

    Nicotinamide Riboside · Natural Medicines adverse-effect record, reported in pain.

    2 sources cited
    1. 94744. Martens CR, Denman BA, Mazzo MR, et al. Chronic nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults. Nat Commun 2018;9(1):1286. PubMed
    2. 102035. Conze D, Brenner C, Kruger CL. Safety and metabolism of long-term administration of NIAGEN (nicotinamide riboside chloride) in a randomized, double-blind, placebo-controlled clinical trial of healthy overweight adults. Sci Rep 2019;9(1):9772. PubMed

    Diclofenac Sodium

    Listed in the ADVERSE REACTIONS section of the FDA label for Diclofenac Sodium. Read the label on DailyMed ›

Effects for Diclofenac Sodium come from the ADVERSE REACTIONS section of its FDA label; effects for Nicotinamide Riboside come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 155,962 voluntary FDA FAERS reports for Diclofenac Sodium that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Special populations

Nicotinamide Riboside in Pregnancy & Breastfeeding

Pregnancy And Lactation Possibly Safe

When nicotinamide riboside chloride is used orally and appropriately. The European Food Safety Authority has determined that taking nicotinamide riboside chloride in doses of up to 230 mg daily is safe when pregnant or breastfeeding.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

From our Q&A

Questions About Nicotinamide Riboside or Diclofenac Sodium

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Nicotinamide Riboside or Diclofenac Sodium, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Diclofenac Sodium

This page covers Nicotinamide Riboside only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Diclofenac Sodium page lists 308 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Asarabacca (major), Beer (major), Danshen (major) and Piracetam (major).

By severity: 7 major · 266 moderate · 35 minor.

From our pharmacist’s overview on the Diclofenac Sodium page

“Diclofenac (Voltaren), a daily mainstay for arthritis and joint pain, comes with a supplement list that calls for real vigilance. Of the 308 ingredients on file, 7 rate major, and roughly two hundred entries share a single theme: anything with blood-thinning activity adds to diclofenac's own bleeding risk, especially in the stomach.”

Reviewed by 2 · Jul 18, 2026

Open the Diclofenac Sodium interaction page

One more smart check

Taking Nicotinamide Riboside as Part of a Dietary Supplement Product? Check It for Interactions

We hold 162 real supplement products containing Nicotinamide Riboside, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Nicotinamide Riboside. Even though Nicotinamide Riboside itself has no known interaction with Diclofenac Sodium, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Nicotinamide Riboside and Diclofenac Sodium Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Nicotinamide Riboside
Top half

#455 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Diclofenac Sodium
Top 10%

#184 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Nicotinamide Riboside reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 27, 2026. The Nicotinamide Riboside and Diclofenac Sodium records this page draws on were last updated July 10, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Nicotinamide Riboside

What is Nicotinamide Riboside?

  • Healthy aging
  • Boosting cellular energy
  • Supporting metabolism
  • General wellness
  • Athletic recovery

Nicotinamide riboside (NR) is a form of vitamin B3 that the body converts into NAD+, a molecule involved in cellular energy and repair. Early human studies show it can reliably raise NAD+ levels and appears generally well tolerated, but solid evidence that it improves aging, energy, or specific health conditions is still limited. Talk with your pharmacist or doctor before starting it.

Not applicable (a form of vitamin B3) · Capsules, tablets, powders

An interaction check asks whether these two react with each other — it does not ask whether Nicotinamide Riboside is a good idea for someone in your situation. Here is what our Nicotinamide Riboside record says about it on its own.

Nicotinamide Riboside: dosing

There is no official, standardized dose of nicotinamide riboside for any health condition. Research studies have used a range of amounts, but these are not formal recommendations.The safest approach is to follow the dose printed on the product label and not exceed it without professional guidance. They can help you decide whether NR is appropriate for you and what amount makes sense.

From our Nicotinamide Riboside monograph — the full record covers uses, side effects and every documented interaction.

Read the full Nicotinamide Riboside monograph & all interactions
Medication

About Diclofenac

What Is Diclofenac Used For?

Brand names: Voltaren XR, Voltaren, Voltaren SR, Diclo, Difenac, Diclo SR, Voltarol, Acoflam, Defenac, Dicloflex, Diclovol, Diclozip, Fenactol, Flamrase, Volraman, Diclomax SR, Diclomax Retard, Motifene 75 mg, Voltarol 75 mg SR, Acoflam 75 SR, Defenac SR, Dexomon 75 SR, Dicloflex 75 SR, Diclovol SR, Fenactol 75 mg SR, Flamatak 75 MR, Flamrase SR, Flexotard MR 75, Rheumatac Retard 75, Rhumalgan CR, Slofenac SR, Volsaid Retard 75, Voltarol Retard, Acoflam Retard, Defenac Retard, Dexomon Retard 100, Dicloflex Retard, Diclovol Retard, Fenactol Retard 100 mg, Flamatak 100 MR, Volsaid Retard 100, Voltarol Ophtha Multidose, Voltarol Ophtha, Pennsaid, Voltaren Emulgel, Dyloject

Diclofenac sodium topical gel is used to treat actinic keratoses (AK) — rough, scaly skin patches that form after years of sun exposure. These patches are considered precancerous, meaning they can develop into skin cancer if left untreated.

This is a topical gel, meaning it is applied directly to the skin over the affected area rather than taken by mouth. It belongs to the NSAID (nonsteroidal anti-inflammatory drug) family.

Most-Reported Side Effects for Diclofenac Sodium

From FAERS, the FDA’s public side-effect reporting system (155,962 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Fatigue 13,844 reports
Arthralgia 11,333 reports
Rash 10,855 reports
Rheumatoid arthritis 10,744 reports
Abdominal discomfort 9,636 reports
See full Diclofenac drug information
Keep checking

Other Drugs & Nicotinamide Riboside

Browse every other medication we’ve checked against Nicotinamide Riboside — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
0Moderate
172Minor
2,657No known interaction
172 Minor 2,657 No interaction
Minor

172 interactions

Showing 60 of 172 minor interactions — see all 172 on the Nicotinamide Riboside page.

No interaction 2,657 drugs checked — show the list

We also checked Nicotinamide Riboside against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,657 medications checked with no known interaction — see the full Nicotinamide Riboside list.

See the full Nicotinamide Riboside interactions page
See every supplement checked against Diclofenac Sodium, ranked by severity
Evidence & sources

Nicotinamide Riboside References

The 7 references that drive our Nicotinamide Riboside monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Martens CR, Denman BA, Mazzo MR, et al. Chronic nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults. Nat Commun 2018;9(1):1286. PubMed
  2. Dollerup OL, Christensen B, Svart M, et al. A randomized placebo-controlled clinical trial of nicotinamide riboside in obese men: safety, insulin-sensitivity, and lipid-mobilizing effects. Am J Clin Nutr 2018;108(2):343-53. PubMed
  3. Dellinger RW, Santos SR, Morris M, et al. Repeat dose NRPT (nicotinamide riboside and pterostilbene) increases NAD+ levels in humans safety and sustainably: a randomized, double-blind, placebo-controlled study. NPJ J Aging Mech Dis 2017;3:17.
  4. Conze D, Brenner C, Kruger CL. Safety and metabolism of long-term administration of NIAGEN (nicotinamide riboside chloride) in a randomized, double-blind, placebo-controlled clinical trial of healthy overweight adults. Sci Rep 2019;9(1):9772. PubMed
  5. Remie CME, Roumans KHM, Moonen MPB, et al. Nicotinamide riboside supplementation alters body composition and skeletal muscle acetylcarnitine concentrations in healthy obese humans. Am J Clin Nutr. 2020;112(2):413-426. PubMed
  6. Turck D, Castenmiller J, de Henauw S, et al. Safety of nicotinamide riboside chloride as a novel food pursuant to Regulation (EU) 2015/2283 and bioavailability of nicotinamide from this source, in the context of Directive 2002/46/EC. EFSA J. 2019;17(8):e0
  7. EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA), Turck D, et al. Extension of use of nicotinamide riboside chloride as a novel food pursuant to Regulation (EU) 2015/2283. EFSA J 2021;19(11):e06843.

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Nicotinamide Riboside and Diclofenac Sodium Together: Common Questions

Is it safe to take Nicotinamide Riboside with Diclofenac Sodium?
We do not list a known interaction between Nicotinamide Riboside and Diclofenac Sodium. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Do Nicotinamide Riboside and Diclofenac Sodium have any of the same side effects?
Yes — our sources link each of them separately to 9 of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
How was the Nicotinamide Riboside and Diclofenac Sodium combination checked?
Interactions in our licensed database are recorded against drug classes. Diclofenac Sodium is filed under 11 classifications, and Nicotinamide Riboside has documented interactions with 1 drug class — none of Diclofenac Sodium's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Nicotinamide Riboside interact with any other medications?
Yes. Nicotinamide Riboside has 172 documented drug interactions in our database — Diclofenac Sodium is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Diclofenac Sodium interact with any supplements?
Yes. Diclofenac Sodium has documented interactions with 308 supplements in our database — Nicotinamide Riboside is not one of them. The Diclofenac Sodium interaction page linked on this page lists every one, ranked by severity.

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

Where next

Keep Exploring

Nicotinamide Riboside monograph Uses, safety profile, and every drug interaction in one place Diclofenac drug information The full plain-English guide to this medication Diclofenac Sodium supplement interactions Every supplement checked against Diclofenac Sodium, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 7 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Diclofenac Sodium and Nicotinamide Riboside?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.