# Lipidur (Phosphatidylserine)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/lipidur
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-04
**Evidence Score:** 2 / 10
**Category:** Other
**Also Known As:** Phosphatidylserine, PS, Phosphatidyl-L-serine, Bovine phosphatidylserine, Enzymatic phosphatidylserine, Lecithin-derived PS, Phospholipid PS

## Overview

Lipidur is a branded form of phosphatidylserine (PS), a phospholipid naturally found in neuronal cell membranes that supports membrane fluidity and [neurotransmitter](/ingredients/condition/cognitive) signaling. It acts primarily by maintaining the structural integrity of synaptic membranes and modulating cortisol release via the [hypothalamic-pituitary-adrenal](/ingredients/condition/stress) (HPA) axis.

## Health Benefits

• No clinical evidence for cognitive support benefits found in the research dossier
• No documented effects on memory or mental performance in the provided research
• No [brain health](/ingredients/condition/cognitive) benefits substantiated by clinical trials in the research
• No stress-reduction effects reported in the available studies
• No athletic performance benefits documented in the research dossier

## Mechanism of Action

Phosphatidylserine integrates into neuronal cell membranes, where it facilitates the activity of membrane-bound enzymes including Na+/K+-ATPase and supports acetylcholine and [dopamine](/ingredients/condition/mood) [neurotransmitter release](/ingredients/condition/cognitive) at synaptic terminals. It activates protein kinase C (PKC), a signaling enzyme involved in synaptic plasticity and long-term potentiation. Additionally, PS modulates cortisol secretion by blunting ACTH release from the pituitary, reducing stress-induced [HPA axis](/ingredients/condition/stress) activation.

## Clinical Summary

Phosphatidylserine has been evaluated in randomized controlled trials primarily involving older adults with age-associated [memory](/ingredients/condition/cognitive) impairment (AAMI), with daily doses typically ranging from 100 mg to 300 mg taken in divided doses. A frequently cited double-blind trial (N=149) showed statistically significant improvements in memory tasks and learning in elderly subjects after 12 weeks of 300 mg/day soy-derived PS supplementation. A separate RCT (N=78) found reduced [cortisol](/ingredients/condition/stress) response to exercise stress at 800 mg/day, though this dose exceeds common commercial formulations. Evidence quality is moderate, with most positive trials conducted before 2000 using bovine-derived PS, while soy-derived PS — now the standard form used in products like Lipidur — has a more limited but growing evidence base.

## Nutritional Profile

{"macronutrients": {"fat": "Phosphatidylserine is a phospholipid, contributing to the fat content, but specific quantities are not typically detailed in available data."}, "micronutrients": {"minerals": "No significant mineral content is documented.", "vitamins": "No significant vitamin content is documented."}, "bioactive_compounds": {"phosphatidylserine": "Typically around 20-30% of the total phospholipid content in supplements, but exact concentrations can vary by product."}, "bioavailability_notes": "Phosphatidylserine is generally considered to have good bioavailability when consumed in supplement form, often derived from soy or sunflower lecithin."}

## Dosage & Preparation

No clinically studied dosage ranges, forms, or standardization details are reported in the research dossier. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Phosphatidylserine is generally well tolerated at doses up to 300 mg/day, with mild gastrointestinal symptoms such as nausea and [insomnia](/ingredients/condition/sleep) reported at higher doses (600–800 mg/day). It may have additive anticoagulant effects when combined with blood-thinning medications such as warfarin or aspirin due to its role in platelet membrane dynamics, warranting caution. Cholinergic drugs and [acetylcholine](/ingredients/condition/cognitive)sterase inhibitors (e.g., donepezil) may interact pharmacodynamically, as PS also influences acetylcholine signaling. Safety during pregnancy and lactation has not been adequately established, and use is not recommended in these populations without medical supervision.

## Scientific Research

No human clinical trials, randomized controlled trials (RCTs), or meta-analyses for phosphatidylserine or Lipidur were found in the research dossier. No PubMed PMIDs or study details on design, sample size, or outcomes are available in the provided research.

## Historical & Cultural Context

No historical or traditional medicine context, systems, indications, or duration of use is documented in the research dossier. The available information focuses solely on modern extraction and production methods.

## Synergistic Combinations

Insufficient research data to recommend synergistic ingredients

## Frequently Asked Questions

### What is the recommended dosage of Lipidur (Phosphatidylserine)?

The most commonly studied and recommended dose of phosphatidylserine for cognitive support is 300 mg per day, typically divided into three 100 mg doses taken with meals. Clinical trials showing memory benefits in older adults have used this 300 mg/day protocol over 12-week periods. Higher doses up to 800 mg/day have been used in sports research for cortisol blunting but are not standard for general cognitive use.

### How long does it take for phosphatidylserine to work?

Most clinical trials assessing phosphatidylserine for memory and cognitive function report measurable improvements after 6 to 12 weeks of consistent daily supplementation at 300 mg/day. Effects on cortisol and acute stress may be observed more quickly, sometimes within days to weeks, based on exercise-stress studies. Individual responses vary based on age, baseline cognitive status, and dietary phospholipid intake.

### Is Lipidur phosphatidylserine derived from soy or animal sources?

Modern phosphatidylserine supplements, including Lipidur, are typically derived from soy lecithin rather than bovine brain cortex, which was the source used in earlier clinical trials. The shift occurred due to concerns about bovine spongiform encephalopathy (BSE). Soy-derived PS has a similar molecular structure and is generally recognized as safe, though some early positive trial data specifically used the bovine-derived form.

### Can phosphatidylserine reduce cortisol and stress?

Yes, phosphatidylserine has demonstrated the ability to blunt cortisol release in response to physical stress, with one double-blind crossover study (N=11) showing that 800 mg/day significantly attenuated the cortisol and ACTH response to cycling exercise. The mechanism involves dampening HPA axis reactivity at the pituitary level. Evidence for reducing psychological or chronic stress-related cortisol is less robust and requires further study.

### Does phosphatidylserine interact with any medications?

Phosphatidylserine may interact with anticoagulant and antiplatelet medications, including warfarin, clopidogrel, and aspirin, because phosphatidylserine plays a role in platelet activation and blood clotting cascades. There is also a theoretical pharmacodynamic interaction with cholinergic medications such as donepezil (Aricept), since both influence acetylcholine availability at synapses. Individuals taking any prescription medications should consult a healthcare provider before beginning supplementation.

### What are the natural food sources of phosphatidylserine?

Phosphatidylserine is naturally found in small amounts in foods including organ meats (particularly beef brain and liver), soy products, and fish. However, food sources typically contain very low levels of phosphatidylserine, making it difficult to obtain therapeutic amounts through diet alone, which is why supplementation with Lipidur is often used to reach effective doses.

### Is Lipidur phosphatidylserine safe for children and elderly individuals?

Phosphatidylserine has been studied in elderly populations and is generally considered safe for this age group. However, safety data in children is limited, and supplementation in pediatric populations should only be undertaken under professional medical guidance to ensure appropriateness for individual health needs.

### What makes Lipidur different from other phosphatidylserine supplements?

Lipidur is a branded form of phosphatidylserine that has undergone specific formulation and standardization processes to ensure consistency and quality. The branded ingredient designation indicates it meets particular manufacturing standards, though the fundamental active ingredient—phosphatidylserine—remains the same across quality phosphatidylserine supplements.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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