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Dietary supplement

Phosphatidylserine Powder 300 mg Ingredients & Drug Interactions

by BulkSupplements.com

Phosphatidylserine Powder 300 mg label
See full label image
Powder 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 Powder 300 mg 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 Powder 300 mg is a dietary supplement by BulkSupplements.com 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 Powder 300 mg by BulkSupplements.com

Ask about any prescription or over-the-counter medication and we check it for interactions with Phosphatidylserine Powder 300 mg by BulkSupplements.com — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Phosphatidylserine Powder 300 mg by BulkSupplements.com

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 11, 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 at 300 mg per serving. Phosphatidylserine is a phospholipid — a fatty compound found naturally in cell membranes — that your body uses in brain cell structure and function.

The inactive ingredients are phospholipids.

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

This product doesn't appear to be marketed for a specific use, so we graded Phosphatidylserine's overall clinical evidence instead.

Moderate

Some clinical evidence supports Phosphatidylserine for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredient's overall clinical evidence instead.
  • On file: Age-related cognitive decline — rated "Possibly Effective" (Natural Medicines).
  • On file: Alzheimer disease — rated "Possibly Effective" (Natural Medicines).

Phosphatidylserine has possibly effective evidence for age-related cognitive decline and Alzheimer disease. For athletic performance, attention deficit-hyperactivity disorder (ADHD), general cognitive function, and dementia, the evidence isn't established well enough in our data to rate it.

If you're considering it for one of those other uses, talk with your pharmacist about what the current research actually shows.

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 isn't fully established. The most common side effects reported are flatulence, gastrointestinal upset, headache, insomnia, and nausea.

At your dose of 300 mg per day, gastrointestinal upset is possible. Insomnia is more likely at higher doses (around 600 mg), but headache has been reported too.

The safety data advises against use during pregnancy. Safety while breastfeeding is unknown, so avoidance is recommended.

Talk with your doctor or pharmacist for personalized guidance if you're pregnant, planning pregnancy, 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.

Before you start, check any anticholinergic medications (for overactive bladder, muscle spasms, or Parkinson's) and cholinergic medications (for myasthenia gravis or glaucoma) with the search tool on this page. Both have Moderate interactions documented.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.

Phosphatidylserine may help with age-related cognitive decline or Alzheimer disease, though the evidence is preliminary. If you take anticholinergic or cholinergic medications, check with us first.

Expect a possible upset stomach at this dose, and be aware that long-term safety data is limited.

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 Apr 24, 2025.

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 Powder 300 mg, straight from the product label.

Brand BulkSupplements.com
Barcode (UPC) X002LYK8VZ
Net contents 250 Gram(s); 8.8 Ounce(s)
Market status On market
Date entered into DSLD Apr 24, 2025
DSLD ID 330247
Product type Fat/fatty Acid
Supplement form Powder
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Dairy 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 Powder 300 mg by BulkSupplements.com, 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:
300 Milligram(s)
Maximum serving Sizes:
300 Milligram(s)
Servings per container
833
UPC/BARCODE
X002LYK8VZ
IngredientAmount% DV
Phosphatidylserine60 mg--

Other ingredients: Phospholipids

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.
Formula

Phosphatidylserine Powder 300 mg per serving

Brand IP Statement(s)

BulkSupplements.com Clean & pure bulk supplements

Formulation

Free of: Added sugar, dairy, yeast, gluten

Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, take 300 mg (about 1/10 tsp) once or twice daily, or as directed by a physician.

General Statements

Use an accurate milligram scale.

New

Storage

Contents are sold by weight, not volume. Settling may occur. Store in a dry, cool place

Precautions

Allergen information: Soy

Always consult a physician before taking any dietary supplement.

Keep out of reach of children.

FDA Disclaimer Statement

Warning: This product is not intended to diagnose, treat, cure, or prevent any disease.

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

See for yourself

Phosphatidylserine Powder 300 mg by BulkSupplements.com label

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

Phosphatidylserine Powder 300 mg 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 Powder 300 mg by BulkSupplements.com

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

Serving size300 Milligram(s) Dosage formPowder Servings per container833 Amounts shown are per serving.

Phosphatidylserine

Interacts with
219 drugs
60 mg per serving

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: Phospholipids. These complete the product’s ingredient list but are not active constituents.

Interaction report

Phosphatidylserine Powder 300 mg by BulkSupplements.com Drug Interactions

Want to check YOUR meds against Phosphatidylserine Powder 300 mg?

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 Powder 300 mg interact with 219 drugs. Click any drug to see the details.

1 of the 1 ingredient in Phosphatidylserine Powder 300 mg 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 Powder 300 mg 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 Powder 300 mg, from the product label.

BulkSupplements.com

See all BulkSupplements.com products
Name
BulkSupplements.com
Street Address
7511 Eastgate Rd
City
Henderson
State
NV
ZipCode
89011
Web Address
BulkSupplements.com
Pharmacist Counseling Corner

Phosphatidylserine Powder 300 mg by BulkSupplements.com: Common Questions

Does Phosphatidylserine Powder 300 mg by BulkSupplements.com interact with any medications?
Yes. Based on its ingredients, Phosphatidylserine Powder 300 mg 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 Powder 300 mg 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 (phospholipid) that's part of your cell membranes, especially in the brain. It's thought to support brain cell structure and may play a role in how brain cells communicate with each other.
Will this help with my memory or brain fog?
Phosphatidylserine has possibly effective evidence for age-related cognitive decline and Alzheimer disease. For general brain fog or other cognitive concerns, the evidence isn't established well enough in our data to say. Your pharmacist can tell you more about what the current research shows for your specific situation.
What side effects might I get at 300 mg a day?
The most common side effects are flatulence, gastrointestinal upset, headache, insomnia, and nausea. Gastrointestinal upset is possible at your dose of 300 mg per day. Insomnia is more likely at higher doses (around 600 mg).
Is it safe to take while pregnant or breastfeeding?
The safety data advises against use during pregnancy. Safety while breastfeeding is unknown, so avoidance is recommended. Talk with your doctor or pharmacist for personalized advice.
How long can I safely take this supplement?
Phosphatidylserine is generally well tolerated in studies, but long-term safety isn't fully established. If you're planning to take it long-term, mention that to your pharmacist so you can discuss what we do and don't know.

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

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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 Powder 300 mg label
Go deeper

The Full Monographs Behind Phosphatidylserine Powder 300 mg’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 Powder 300 mg'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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