Drug & supplement interaction

Phosphatidylserine + Ketoprofen

Ketoprofen brand names: Orudis, Oruvail Gel, Powergel, Oruvail Injection.

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

We found no known interaction between Phosphatidylserine and Ketoprofen 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 label for Ketoprofen states a food rule worth keeping to, and 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

Phosphatidylserine and Ketoprofen

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 Ketoprofen and Phosphatidylserine 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.

Phosphatidylserine safety at a glance

Phosphatidylserine overall Use caution Generally well tolerated in studies, but long-term safety is not fully established.
Pregnancy Avoid There is not enough safety information, so it is best to avoid use during pregnancy.
Breastfeeding Avoid Safety while breastfeeding is unknown, so avoidance is recommended.

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

Still wondering about combining Ketoprofen and Phosphatidylserine? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Ketoprofen

Interactions in our licensed database are recorded against drug classes, not just single drug names. Ketoprofen is filed under 8 classifications — including nonsteroidal anti-inflammatory drugs (nsaids), anticoagulant/antiplatelet drugs, organic anion transporter 3 (oat3) substrates. Phosphatidylserine has documented interactions with 2 drug classes — the most serious being anticholinergic drugs (moderate) and cholinergic drugs (moderate) — and none of Ketoprofen’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

Phosphatidylserine Does Interact With Other Medications

Phosphatidylserine has 219 moderate known drug interactions in our database — Ketoprofen isn’t one of them. If you take anything else, check it against the full list below.

Moderate 219 No known interaction 2,611 (incl. Ketoprofen)
Taking anything else?

Check Another of Your Medications Against Phosphatidylserine

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

What to actually watch for

No Interaction Found — But Data Suggests Phosphatidylserine and Ketoprofen 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.

  • Bloating or gas / Stomach upset / Nausea reported in 6.1% of FDA reports for Ketoprofen Additional detail

    Phosphatidylserine

    “Orally, phosphatidylserine can cause gastrointestinal upset such as flatulence or nausea. Gastrointestinal upset can occur at doses of 200-300 mg/day.”

    Phosphatidylserine · Natural Medicines adverse-effect record, reported in flatulence.

    5 sources cited
    1. 7116. Pepping J. Phosphatidylserine. Am J Health-Syst Pharm 1999;56:2038,2043-4.
    2. 7121. Kidd PM. Phosphatidylserine; Membrane nutrient for memory. A clinical and mechanistic assessment. Altern Med Rev 1996;1:70-84.
    3. 15539. Schreiber S, Kampf-Sherf O, Gorfine M, et al. An open trial of plant-source derived phosphatydilserine for treatment of age-related cognitive decline. Isr J Psychiatry Relat Sci 2000;37:302-7.
    4. 68862. Monteverde, A., Gnemmi, P., Rossi, F., Monteverde, A., and Finali, G. C. Selegiline in the treatment of mild to moderate Alzheimer-type dementia. Clin.Ther 1990;12(4):315-322.
    5. 90711. Vakhapova V, Cohen T, Richter Y, Herzog Y, Kam Y, Korczyn AD. Phosphatidylserine containing omega-3 Fatty acids may improve memory abilities in nondemented elderly individuals with memory complaints: results from an open-label extension study. Dement Geri PubMed

    Ketoprofen

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

  • Trouble sleeping / Headache reported in 9.4% of FDA reports for Ketoprofen Additional detail

    Phosphatidylserine

    “Orally, phosphatidylserine can cause insomnia. Insomnia is more likely to occur with a higher dose of 600 mg. Headache has also been reported.”

    Phosphatidylserine · Natural Medicines adverse-effect record, reported in cluster headache.

    3 sources cited
    1. 7121. Kidd PM. Phosphatidylserine; Membrane nutrient for memory. A clinical and mechanistic assessment. Altern Med Rev 1996;1:70-84.
    2. 68844. Pepping, J. Phosphatidylserine. Am J Health Syst.Pharm. 10-15-1999;56(20):2038, 2043-2038, 2044.
    3. 90711. Vakhapova V, Cohen T, Richter Y, Herzog Y, Kam Y, Korczyn AD. Phosphatidylserine containing omega-3 Fatty acids may improve memory abilities in nondemented elderly individuals with memory complaints: results from an open-label extension study. Dement Geri PubMed

    Ketoprofen

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

Effects for Ketoprofen come from the ADVERSE REACTIONS section of its FDA label; effects for Phosphatidylserine come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 13,040 voluntary FDA FAERS reports for Ketoprofen 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.

How to take them

Some Ketoprofen Products Have a Food Rule — Phosphatidylserine Should Not Break It

At least one FDA label for a product containing Ketoprofen says to take it with food. If you take Phosphatidylserine on an empty stomach out of habit, keep them separate — and take Ketoprofen with a meal where the label says to.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Ketoprofen products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

Although food delays the absorption of both formulations (see CLINICAL PHARMACOLOGY ) in most of the clinical trials ketoprofen was taken with food or milk.

From the Dosage and Administration section of the FDA label we read for Ketoprofen — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

From our Q&A

Questions About Phosphatidylserine or Ketoprofen

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Phosphatidylserine or Ketoprofen, 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 Ketoprofen

This page covers Phosphatidylserine only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Ketoprofen page lists 252 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 · 217 moderate · 28 minor.

From our pharmacist’s overview on the Ketoprofen page

“Bleeding is what worries me most with ketoprofen (Orudis, Oruvail Gel). As an NSAID, it already irritates the stomach lining and slows clotting, and 202 of the 252 supplements and herbs on this page can push that bleeding risk further.”

Reviewed by 2 · Jul 18, 2026

Open the Ketoprofen interaction page

One more smart check

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

We hold 1,754 real supplement products containing Phosphatidylserine, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Phosphatidylserine. Even though Phosphatidylserine itself has no known interaction with Ketoprofen, 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 Phosphatidylserine and Ketoprofen 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 Phosphatidylserine
Top 10%

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

29 days ago today
Medication Ketoprofen
Top half

#762 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 Phosphatidylserine reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Phosphatidylserine and Ketoprofen 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 Phosphatidylserine

What is Phosphatidylserine?

Phosphatidylserine
  • Memory and cognitive support
  • Age-related cognitive decline
  • Attention and focus (ADHD)
  • Mental performance under stress
  • Exercise recovery

Phosphatidylserine is a natural fat-like compound found in cell membranes, especially in the brain, and it is sold mainly to support memory and thinking. Some research suggests possible benefits for age-related memory problems, but the evidence is limited and far from conclusive. It is generally well tolerated, but check with your pharmacist or doctor before using it, especially during pregnancy or breastfeeding.

Phospholipid derived from soy lecithin, sunflower lecithin, or (historically) bovine brain · Capsules, softgels, tablets, powders

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

Phosphatidylserine: dosing

There is no official standardized dose for phosphatidylserine. Amounts used in studies have varied, and the right amount for any individual is not well established.The safest approach is to follow the dose printed on the product label and not exceed it. Taking it earlier in the day may help reduce the chance of sleep problems.

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

Read the full Phosphatidylserine monograph & all interactions
Medication

About Ketoprofen

What Is Ketoprofen Used For?

Brand names: Orudis, Oruvail Gel, Powergel, Oruvail Injection

Ketoprofen capsules (including the brand Orudis) are used to manage the signs and symptoms of rheumatoid arthritis and osteoarthritis, to treat pain, and to treat primary dysmenorrhea (painful menstrual periods).

Ketoprofen extended-release capsules are approved for rheumatoid arthritis and osteoarthritis only. Because of the way they slowly release the drug, ketoprofen extended-release capsules are not recommended for treating acute (sudden) pain.

Most-Reported Side Effects for Ketoprofen

From FAERS, the FDA’s public side-effect reporting system (13,040 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Headache 1,232 reports
Fatigue 932 reports
Nausea 799 reports
Infusion site pain 764 reports
Fever 756 reports
See full Ketoprofen drug information
Keep checking

Other Drugs & Phosphatidylserine

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

0Major
219Moderate
0Minor
2,610No known interaction
219 Moderate 2,610 No interaction
Moderate

219 interactions

Showing 60 of 219 moderate interactions — see all 219 on the Phosphatidylserine page.

No interaction 2,610 drugs checked — show the list

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

Showing the 60 most looked-up of 2,610 medications checked with no known interaction — see the full Phosphatidylserine list.

See the full Phosphatidylserine interactions page
See every supplement checked against Ketoprofen, ranked by severity
Evidence & sources

Phosphatidylserine References

The 9 references that drive our Phosphatidylserine 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. Crook T, Petrie W, Wells C, Massari DC. Effects of phosphatidylserine in Alzheimer's disease. Psychopharmacol Bull 1992;28:61-6.
  2. Pepping J. Phosphatidylserine. Am J Health-Syst Pharm 1999;56:2038,2043-4.
  3. Kidd PM. Phosphatidylserine; Membrane nutrient for memory. A clinical and mechanistic assessment. Altern Med Rev 1996;1:70-84.
  4. Kim HY, Akbar M, Lau A, et al. Inhibition of neuronal apoptosis by docosahexaenoic acid (22:6n-3). Role of phosphatidylserine in antiapoptotic effect. J Biol Chem 2000;275:35215-23.. PubMed
  5. Zanotti A, Valzelli L, Toffano G. Chronic phosphatidylserine treatment improves spatial memory and passive avoidance in aged rats. Psychopharmacology (Berl) 1989;99:316-21.. PubMed
  6. Schreiber S, Kampf-Sherf O, Gorfine M, et al. An open trial of plant-source derived phosphatydilserine for treatment of age-related cognitive decline. Isr J Psychiatry Relat Sci 2000;37:302-7.
  7. Pepping, J. Phosphatidylserine. Am J Health Syst.Pharm. 10-15-1999;56(20):2038, 2043-2038, 2044.
  8. Monteverde, A., Gnemmi, P., Rossi, F., Monteverde, A., and Finali, G. C. Selegiline in the treatment of mild to moderate Alzheimer-type dementia. Clin.Ther 1990;12(4):315-322.
  9. Vakhapova V, Cohen T, Richter Y, Herzog Y, Kam Y, Korczyn AD. Phosphatidylserine containing omega-3 Fatty acids may improve memory abilities in nondemented elderly individuals with memory complaints: results from an open-label extension study. Dement Geri 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 Phosphatidylserine and Ketoprofen Together: Common Questions

Is it safe to take Phosphatidylserine with Ketoprofen?
We do not list a known interaction between Phosphatidylserine and Ketoprofen. 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 Phosphatidylserine and Ketoprofen have any of the same side effects?
Yes — our sources link each of them separately to 5 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.
Should I take Phosphatidylserine and Ketoprofen at the same time of day?
At least one FDA label for a product containing Ketoprofen says to take it with food. If you take Phosphatidylserine on an empty stomach out of habit, keep them separate and take Ketoprofen with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Ketoprofen products can differ — so check the directions on your own box. This is about absorption, not an interaction.
How was the Phosphatidylserine and Ketoprofen combination checked?
Interactions in our licensed database are recorded against drug classes. Ketoprofen is filed under 8 classifications, and Phosphatidylserine has documented interactions with 2 drug classes — none of Ketoprofen'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 Phosphatidylserine interact with any other medications?
Yes. Phosphatidylserine has 219 documented drug interactions in our database — Ketoprofen 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 Ketoprofen interact with any supplements?
Yes. Ketoprofen has documented interactions with 252 supplements in our database — Phosphatidylserine is not one of them. The Ketoprofen 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

Phosphatidylserine monograph Uses, safety profile, and every drug interaction in one place Ketoprofen drug information The full plain-English guide to this medication Ketoprofen supplement interactions Every supplement checked against Ketoprofen, 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 9 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Ketoprofen and Phosphatidylserine?

Our pharmacists answer your medication & supplement questions — free.

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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.