Drug & supplement interaction

N,n-dmpea + Piroxicam

Piroxicam brand names: Feldene, Feldene Gel.

No Known Interaction
Medically reviewed by · Updated June 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between N,n-dmpea and Piroxicam 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.

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Interaction report

N,n-dmpea and Piroxicam

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 Piroxicam and N,n-dmpea 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.

N,n-dmpea safety at a glance

N,n-dmpea overall Use caution Human safety data are very limited, and stimulant-like effects are possible.
Pregnancy Avoid No safety data exist, so it should be avoided during pregnancy.
Breastfeeding Avoid No safety data exist, so it should be avoided while breastfeeding.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Piroxicam and N,n-dmpea? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Piroxicam

Interactions in our licensed database are recorded against drug classes, not just single drug names. Piroxicam is filed under 9 classifications — including nonsteroidal anti-inflammatory drugs (nsaids), cytochrome p450 2c9 (cyp2c9) substrates, anticoagulant/antiplatelet drugs. N,n-dmpea has documented interactions with 1 drug class — the most serious being cytochrome p450 2d6 (cyp2d6) substrates (moderate) — and none of Piroxicam’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

N,n-dmpea Does Interact With Other Medications

N,n-dmpea has 193 moderate known drug interactions in our database — Piroxicam isn’t one of them. If you take anything else, check it against the full list below.

Moderate 193 No known interaction 2,637 (incl. Piroxicam)
Taking anything else?

Check Another of Your Medications Against N,n-dmpea

Covers the 2,830 medications we’ve checked against N,n-dmpea. Pick one to open its full report.

What to actually watch for

What Piroxicam’s Own FDA Label Lists

This is not an interaction — none of it involves N,n-dmpea. These are the most notable effects listed in the ADVERSE REACTIONS section of Piroxicam’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. 10 of them are worth acting on rather than waiting out — marked below.

  • Pain or burning when passing urine Worth acting on
  • Bleeding in the gut Worth acting on
  • High potassium Worth acting on
  • Low blood sugar Worth acting on
  • A heart attack Worth acting on
  • Hallucinations Worth acting on
  • Pancreatitis Worth acting on
  • Yellowing of the skin or eyes Worth acting on
  • Heart failure Worth acting on
  • An allergic reaction Worth acting on mentioned in 15.4% of FDA reports for Piroxicam

Showing the 10 most notable of 59 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Piroxicam. Read the label on DailyMed › Where a percentage is shown, it is the share of 6,275 voluntary FDA FAERS reports for Piroxicam that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. N,n-dmpea’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no N,n-dmpea side to compare — that is a limit of the record, not a statement that N,n-dmpea has no side effects.

From our Q&A

Questions About N,n-dmpea or Piroxicam

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers N,n-dmpea or Piroxicam, 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 Piroxicam

This page covers N,n-dmpea only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Piroxicam page lists 285 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 · 242 moderate · 36 minor.

From our pharmacist’s overview on the Piroxicam page

“Piroxicam (Feldene) is a potent, long-acting NSAID for arthritis pain, and since it already carries real stomach-bleeding risk on its own, my honest read is that this page calls for genuine caution rather than a quick skim. Most of the 285 interacting supplements share a single problem: they thin the blood or blunt platelets, stacking…”

Reviewed by 2 · Jul 18, 2026

Open the Piroxicam interaction page

How much people look this up

Where N,n-dmpea and Piroxicam 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 N,n-dmpea
Steady interest

#1,195 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Piroxicam
Steady interest

#1,469 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 N,n-dmpea reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The N,n-dmpea and Piroxicam records this page draws on were last updated June 22, 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 N,n-dmpea

What is N,n-dmpea?

  • Mood or energy support
  • Pre-workout or stimulant effect
  • Cognitive or focus support

N,N-DMPEA (N,N-dimethylphenethylamine) is a synthetic relative of phenethylamine sometimes marketed in stimulant or pre-workout supplements. There is very little reliable human research on its effects or safety, and it is not a well-established dietary ingredient, so it should be approached with real caution.

Powder, capsules, research chemical

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

N,n-dmpea: dosing

There is no established or standardized safe dose of N,N-DMPEA. Because it has not been properly studied in humans, no reliable dosing guidance exists.If a product contains it, follow the product label, but understand that label amounts may not be accurate or safe.

From our N,n-dmpea monograph — the full record covers uses, side effects and every documented interaction.

Read the full N,n-dmpea monograph & all interactions
Medication

About Piroxicam

What Is Piroxicam Used For?

Brand names: Feldene, Feldene Gel

Piroxicam capsules are used to relieve pain, swelling, and stiffness caused by osteoarthritis and rheumatoid arthritis. It targets inflammation at the source to help improve day-to-day comfort and movement.

Piroxicam is not a cure for either condition — it manages symptoms. Your prescriber will weigh the benefits against the risks and aim for the lowest effective dose for the shortest time needed.

Most-Reported Side Effects for Piroxicam

From FAERS, the FDA’s public side-effect reporting system (6,347 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Drug hypersensitivity 980 reports
Rash 921 reports
Arthralgia 915 reports
Rheumatoid arthritis 856 reports
Fatigue 855 reports
See full Piroxicam drug information
Keep checking

Other Drugs & N,n-dmpea

Browse every other medication we’ve checked against N,n-dmpea — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
193Moderate
0Minor
2,636No known interaction
193 Moderate 2,636 No interaction
Moderate

193 interactions

Showing 60 of 193 moderate interactions — see all 193 on the N,n-dmpea page.

No interaction 2,636 drugs checked — show the list

We also checked N,n-dmpea against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,636 medications checked with no known interaction — see the full N,n-dmpea list.

See the full N,n-dmpea interactions page
See every supplement checked against Piroxicam, ranked by severity
Evidence & sources

N,n-dmpea References

The 2 references that drive our N,n-dmpea 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. Liu Y, Santillo MF. Cytochrome P450 2D6 and 3A4 enzyme inhibition by amine stimulants in dietary supplements. Drug Test Anal. 2016;8(3-4):307-10. PubMed
  2. Schoenwald RD, Vidvauns S, Wurster DE, Barfknecht CF. Tear film stability of protein extracts from dry eye patients administered a sigma agonist. J Ocul Pharmacol Ther 1997;13(2):151-61. PubMed

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 N,n-dmpea and Piroxicam Together: Common Questions

Is it safe to take N,n-dmpea with Piroxicam?
We do not list a known interaction between N,n-dmpea and Piroxicam. 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.
How was the N,n-dmpea and Piroxicam combination checked?
Interactions in our licensed database are recorded against drug classes. Piroxicam is filed under 9 classifications, and N,n-dmpea has documented interactions with 1 drug class — none of Piroxicam'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 N,n-dmpea interact with any other medications?
Yes. N,n-dmpea has 193 documented drug interactions in our database — Piroxicam 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 Piroxicam interact with any supplements?
Yes. Piroxicam has documented interactions with 285 supplements in our database — N,n-dmpea is not one of them. The Piroxicam 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

N,n-dmpea monograph Uses, safety profile, and every drug interaction in one place Piroxicam drug information The full plain-English guide to this medication Piroxicam supplement interactions Every supplement checked against Piroxicam, 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 2 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Piroxicam and N,n-dmpea?

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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.