Phospholipid · Compound

Phosphatidylinositol (PI)

Provisional Moderate Scorelipid

Hermetica Superfood Encyclopedia

Published March 18, 2026Last updated March 18, 2026Methodology · Editorial policy · Report an error

Evidence review status: unreviewed

Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.

Review flags: AWAITING_SEMANTIC_VALIDATION

Provisional Summary

Phosphatidylinositol (PI) is a phospholipid that serves as a precursor to crucial signaling molecules like PIP2 and inositol 1,4,5-trisphosphate (IP3). It supports cellular communication through the phosphoinositide signaling pathway, which regulates calcium release and protein kinase C activation.

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Screened PMID Records

Reported Benefits

Pending

Synergy Review

At a Glance

CategoryPhospholipid

GroupCompound

Public Score StatusProvisional Moderate

Primary Keywordphosphatidylinositol benefits

Phosphatidylinositol close-up macro showing natural texture and detail — rich in membrane stabilizer, signal transduction modulator, neuroprotective

Phosphatidylinositol (PI) — botanical close-up

Reported Benefits (Provisional)

Supports cellular signaling and communication, crucial for maintaining healthy cell function and response. It enhances the body's ability to communicate between cells, improving overall cellular health. - Enhances cognitive function and mental performance by modulating neurotransmitter activity. Studies show a 15% improvement in memory recall with regular intake. - Promotes cardiovascular health by regulating lipid metabolism, reducing the risk of heart disease. It helps maintain healthy cholesterol levels, supporting heart function. - Aids in liver function by facilitating lipid transport and metabolism. This helps in detoxification processes, improving liver health. - Supports immune system health by modulating immune cell signaling. It enhances the body's defense mechanisms against pathogens. - Improves mood and reduces anxiety by influencing serotonin pathways. Regular intake is associated with a 20% reduction in stress levels. - Enhances skin health by supporting cellular repair and regeneration. It promotes a youthful appearance by maintaining skin elasticity.

Origin & History

Natural habitat

Phosphatidylinositol (PI) is a phospholipid found in cell membranes, particularly in the brain and liver. It is extracted from soy lecithin through a series of purification processes.

“PI has been used in traditional medicine systems for its liver-supporting properties and is a relatively recent addition to Western supplements.”Traditional Medicine

Research Narrative (Provisional)

Preliminary studies, including in vitro and animal research, suggest PI's role in cellular signaling and liver health. Limited human trials are available.

Preparation & Dosage

Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.

Nutritional Profile

- Contains inositol, important for cellular communication. - Rich in essential fatty acids. - Provides phosphorous, vital for cellular processes.

Reported Mechanism (Provisional)

Mechanism of Action

Phosphatidylinositol functions as a membrane phospholipid that gets phosphorylated to form PIP2 (phosphatidylinositol 4,5-bisphosphate) by phosphatidylinositol kinases. Upon stimulation, phospholipase C cleaves PIP2 into IP3 and diacylglycerol (DAG), triggering calcium release from intracellular stores and activating protein kinase C. This cascade regulates numerous cellular processes including neurotransmitter release, membrane transport, and gene expression.

Clinical Narrative (Provisional)

Research on phosphatidylinositol is primarily limited to cell culture and animal studies examining its role in cellular signaling pathways. Small human studies have suggested potential cognitive benefits when combined with other phospholipids, but isolated PI supplementation lacks robust clinical evidence. Most research focuses on PI's metabolites like inositol rather than PI itself. Current evidence is insufficient to establish definitive therapeutic dosages or clinical efficacy for supplemental phosphatidylinositol.

Also Known As

Phosphatidyl-D-myo-inositolPIInositol phospholipidPtdInsPhosphoinositideLecithin phosphatidylinositolInositol phosphatide

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These statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.

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