Roll Call

“Phosphatidylinositol?”Here!

Biotech

Hasn’t appeared in a scanned product yet.

As a supplement

Talk to your doctor or pharmacist.

Roll Call does not check drug interactions or assess personal safety.

Phosphatidylinositol is a phospholipid, a fat-based molecule that is a normal structural component of cell membranes throughout the body. It also serves as a starting material for certain cell-signaling molecules.

Why it’s used

Included in some supplements as a source of dietary phospholipids, sometimes marketed for cellular or cognitive support.

What the evidence says

There is no NIH ODS fact sheet for phosphatidylinositol, and direct human supplementation research on this specific phospholipid, as distinct from related compounds like phosphatidylserine or phosphatidylcholine, is very limited.

Where we looked

There was no paper to cite here, so this is the search instead — run it yourself and see what we saw.

  • PubMed: 7211 records · searched September 2026"Phosphatidylinositol"[Title/Abstract] AND (review[pt] OR "safety assessment"[Title/Abstract] OR "risk assessment"[Title/Abstract] OR toxicology[Title/Abstract] OR toxicity[Title/Abstract] OR characterization[Title/Abstract] OR characterisation[Title/Abstract])
  • PubMed: 9 records · searched September 2026"Phosphatidylinositol"[Title/Abstract] AND ("dietary supplements"[MeSH] OR supplementation[Title/Abstract] OR supplement[Title/Abstract] OR supplements[Title/Abstract] OR "oral administration"[Title/Abstract]) AND (randomized controlled trial[pt] OR clinical trial[pt] OR meta-analysis[pt] OR systematic review[pt]) AND humans[MeSH]
  • PubMed: 51962 records · searched September 2026"Phosphatidylinositol"[Title/Abstract]

This says what this database holds under these terms. It is not a finding that no research exists.

Context

Available research is largely at the level of basic cell biology rather than human supplementation trials, so no established oral dosing protocol exists in the published literature.

Insufficient dataToo little has been studied to say either way.

Rumors

  1. Phosphatidylinositol supports brain and neurological health.

    We haven’t found evidence strong enough to support this or rule it out.

    What was measured is not yet noted.

    Who’s saying this

    • BodyBio — a brand: makes and sells science-backed supplements and vitamins
      How we know who this is
      • “In 1998, Ed Kane founded BodyBio when he created the first batch of e-lyte in his bathtub.” (their page)
      • “Passed down through three generations, our mission remains steadfast: create high-quality, science-backed supplements and vitamins that target the foundation of your health and wellness.” (their page)

  2. Phosphatidylinositol in supplements contributes to balanced hormones and metabolism through cell signaling.

    Not gradedhealth and safety evidence

    Sources cited — no verdict reached.

    What was measured is not yet noted.

    Who’s saying this

    • BodyBio — a brand: makes and sells science-backed supplements and vitamins
      How we know who this is
      • “In 1998, Ed Kane founded BodyBio when he created the first batch of e-lyte in his bathtub.” (their page)
      • “Passed down through three generations, our mission remains steadfast: create high-quality, science-backed supplements and vitamins that target the foundation of your health and wellness.” (their page)