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Dietary supplement

Phosphatidylserine Ingredients & Drug Interactions

by Karuna

Phosphatidylserine label
See full label image
Capsule Category: Fat/fatty Acid
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 Phosphatidylserine 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

Phosphatidylserine is a dietary supplement by Karuna with 1 active ingredient. Its ingredients are commonly taken for memory and cognitive support, age-related cognitive decline, attention and focus (adhd).Based on those ingredients, 219 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Phosphatidylserine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Phosphatidylserine by Karuna

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

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HelloPharmacist Scorecard of Phosphatidylserine by Karuna

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 Sep 3, 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: phosphatidylserine, a fatty compound found naturally in your brain and nerves. It's included in a vegetarian capsule along with rice flour and vegetable stearate as inactive ingredients.

Does it work?

Moderate evidence
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
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: Natural substance for age-associated memory impairment.
  • We looked for evidence on: Age-related cognitive decline, Cognitive function, Memory decline, Age-related dementia.
  • The strongest evidence on file: Phosphatidylserine is rated "Possibly Effective" for Age-related cognitive decline (Natural Medicines).
  • Also on file: Phosphatidylserine is rated "Insufficient Reliable Evidence To Rate" for Cognitive function, Dementia.

Phosphatidylserine is possibly effective for age-related cognitive decline and Alzheimer disease. For other uses—including athletic performance, ADHD, general cognitive function, and dementia—the evidence we hold is insufficient to rate it.

If you're considering this for a specific brain or memory concern, it's worth talking over with your doctor about what the current research actually shows for your situation.

The evidence, ingredient by ingredient Phosphatidylserine

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.

Phosphatidylserine is generally well tolerated in studies, though long-term safety hasn't been fully established. The most common side effects are flatulence, stomach upset, headache, insomnia, and nausea—particularly at higher doses.

Insomnia is more likely at 600 mg or higher; gastrointestinal upset can start at 200–300 mg per day. There isn't enough safety data to recommend this during pregnancy, so it's best to avoid it then.

Safety while breastfeeding is also unknown, so avoidance is recommended. Talk with your doctor or pharmacist about personalized advice if you're pregnant, planning to become pregnant, or breastfeeding.

Side effects, ingredient by ingredient Phosphatidylserine

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 — Phosphatidylserine.
  • The most serious interaction on file is rated Moderate.
  • For scale: 219 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.

Check with your doctor or pharmacist before starting this supplement if you take anticholinergic drugs (for overactive bladder, urinary problems, muscle spasms, or certain neurological conditions) or cholinergic drugs. Both are Moderate interactions.

Run your exact medications through the checker on this page to see if any of your prescriptions are affected.

Check your own medication Run your meds through the checker above

The bottom line

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

Phosphatidylserine may help with age-related cognitive decline and Alzheimer disease, though the evidence is modest. Before you start it, check with your doctor or pharmacist if you take anticholinergic or cholinergic drugs, since it can theoretically interfere with how they work.

Avoid it if you're pregnant or breastfeeding. It's generally well tolerated, but stomach upset and insomnia are possible, especially at higher doses.

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 Aug 23, 2013.

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 Phosphatidylserine, straight from the product label.

Brand Karuna
Barcode (UPC) 018647081085
Net contents 90 Vegetarian Capsule(s)
Market status On market
Date entered into DSLD Aug 23, 2013
DSLD ID 24804
Product type Fat/fatty Acid
Supplement form Capsule
Dietary claims / uses No Claim
Intended target group(s) Adult (18 - 50 Years), Dairy Free, Sugar 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 Phosphatidylserine by Karuna, 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:
3 Capsule(s)
Maximum serving Sizes:
3 Capsule(s)
Servings per container
30
UPC/BARCODE
018647081085
IngredientAmount% DV
Phosphatidylserine300 mg--

Other ingredients: vegetarian capsule, Rice Flour, Vegetable Stearate

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.
General

8108-LB4

Seals/Symbols

KARUNA(R) RESPONSIBLE NUTRITION(TM)

General Statements

Natural Substance for Age-associated Memory Impairment

This product is intended for professional use and is manufactured under strict quality control to ensure the optimum in purity, potency and reliability.

EXP12/2012 LOT9J738-0

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Suggested use for adults: Three capsules daily in divided doses, or as directed by your health care practitioner.

Formulation

This product contains no yeast, wheat, corn, milk, salt, sugar, artificial coloring, preservatives or flavoring.

Storage

Keep in a cool, dry place, tightly capped.

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

See for yourself

Phosphatidylserine by Karuna label

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

Phosphatidylserine 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 Phosphatidylserine by Karuna

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

Serving size3 Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.

Phosphatidylserine

Interacts with
219 drugs
300 mg per serving Form: Soy

Phosphatidylserine is a natural fat-like compound found in cell membranes, especially in the brain, and it is sold mainly to support memory and thinki...

Phosphatidylserine monograph & interactions

Other (inactive) ingredients: Vegetarian capsule, Rice Flour, Vegetable Stearate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Phosphatidylserine by Karuna Drug Interactions

Want to check YOUR meds against Phosphatidylserine?

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
219Drugs
219 Moderate

Ingredients driving the most interactions

Phosphatidylserine 219

Individual Drug Interactions

The ingredients in Phosphatidylserine interact with 219 drugs. Click any drug to see the details.

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

Each ingredient & the kinds of drugs it affects

For each ingredient in Phosphatidylserine 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.

Phosphatidylserine2 drug types · 219 drugs

Anticholinergic Drugs

Theoretically, phosphatidylserine might decrease the effectiveness anticholinergic drugs.
Phosphatidylserine is thought to increase acetylcholine levels, which could theoretically interfere with the activity of anticholinergic agents.

Likelihood Possible Evidence B
Cholinergic Drugs

Theoretically, phosphatidylserine might have additive effects with cholinergic drugs.
Phosphatidylserine is thought to increase acetylcholine levels, which could theoretically lead to additive cholinergic effects when used with cholinergic drugs.

Likelihood Possible Evidence B
Phosphatidylserine full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Phosphatidylserine, from the product label.

Karuna

See all Karuna products
Name
Karuna Corporation
Street Address
42 Digital Drive #7
City
Novato
State
CA
ZipCode
94949
Pharmacist Counseling Corner

Phosphatidylserine by Karuna: Common Questions

Does Phosphatidylserine by Karuna interact with any medications?
Yes. Based on its ingredients, Phosphatidylserine has a known interaction with 219 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Phosphatidylserine 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.
What is phosphatidylserine and what does it do in the body?
Phosphatidylserine is a fatty compound that's naturally present in your brain and nerve cells. It's thought to support brain function and communication between nerve cells, which is why it's used for cognitive concerns. But we don't fully understand all the ways it works in your body.
Can phosphatidylserine help with memory loss?
It's possibly effective for age-related cognitive decline and Alzheimer disease. For general memory or cognitive function, though, the evidence we hold is insufficient to rate. Your doctor can help you figure out whether it's worth trying for your specific situation.
What side effects might I experience?
Most commonly, you might notice flatulence, stomach upset, headache, insomnia, or nausea. Insomnia is more likely at higher doses (600 mg or more), and stomach issues can show up at 200–300 mg per day. If any of these bother you, your pharmacist can talk through dose adjustments or timing.
Is it safe to take this if I'm pregnant or breastfeeding?
There isn't enough safety data to recommend phosphatidylserine during pregnancy, so it's best to avoid it. Safety while breastfeeding is also unknown, and avoidance is recommended. Talk with your doctor or pharmacist if you're in either situation and want personalized guidance.
Will this supplement interact with my medications?
Phosphatidylserine has Moderate interactions documented with anticholinergic and cholinergic drugs. If you take medications for urinary problems, overactive bladder, muscle spasms, or any condition involving acetylcholine, check the interaction tool on this page or ask your pharmacist before you start.

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

Not sure if Phosphatidylserine 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.

Phosphatidylserine label
Go deeper

The Full Monographs Behind Phosphatidylserine’s Ingredients

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

Herb & supplement monograph

Phosphatidylserine

Interacts with 219 drugs

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 bene...

Read the full Phosphatidylserine monograph →
Sources

Sources & How We Checked

Phosphatidylserine'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 9 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.

Phosphatidylserine 9 references
  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

See these in context on the Phosphatidylserine 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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