Neurology, cognition and sleep
Conceptual educational illustration of FGL(L) in a glass vial, labelled MOLECULE PROFILE.

View full illustrationSave FGL(L)

MOLECULE PROFILE

FGL(L)

Peptide or peptide-related

NCAM-mimetic signaling rationale.

Sources checked · October 16, 2026

Published for review · Scientific, medical, translation and citation review pending. Reported uses are not authorized indications. Frequency reflects mentions in supplied sources, not sales or global clinical prevalence.

Identity and synonyms

Identity follows the supplied name and synonyms; no additional identity description is supplied.

Synonyms: FGLL · NCAM mimetic

Peptide or peptide-related · Peptide or peptide derivative

Detailed molecular class: Experimental peptide

Supplied sequence or chemical reference

See identity note; no supplier sequence accepted as verification.

Mechanism

NCAM-mimetic signaling rationale.

Evidence and critical reading

Reported scientific and empirical uses

Cognition and neurology

NCAM mimetic promoted for neuroplasticity; confirm FGL(L) versus other variants.

Human evidence

A 24-man single-exposure phase I study assessed tolerability/PK, not sustained cognition.

Preclinical evidence

Neural signaling hypotheses require outcome trials.

Critical reading and limitations

Phase I in 24 men examined single intranasal doses/pharmacokinetics; it did not demonstrate Alzheimer treatment.

Evidence applies to the exact molecule, formulation, route, population and endpoint studied. Supplier identity, purity and clinical equivalence are unverified.

Source-specific regimens

Descriptive source observations, not individual recommendations.

Regulatory product labeling

Listed regimens preserve source/context. An empty layer means no regimen attributable to this identity was verified in this review; it does not prove universal absence of data.

Human-study exposure

NOT A RECOMMENDATION.Each amount is attributed to the source identified for that entry: regulatory product labeling, human research, or community and practice sources. These source categories have different evidentiary roles. They are not medical advice, not a protocol, not a recommended or safe dose, and not evidence that it works. Do not use them to start, change or stop any treatment. Talk to a qualified healthcare professional.

Reported by Tolerability, safety and pharmacokinetics of the FGLL peptide, a novel mimetic of neural cell adhesion molecule, following intranasal administration in healthy volunteers.

25 / 100 / 200 mg · Single exposure in separate cohorts

Frequency
One exposure per participant
Duration
8-day study; not 8 days of repeated dosing
Route
Intranasal
Context
FGL(L), phase I, 24 healthy men. Verified mg; do not intuitively change to mcg.
Presentation
A dosage-form presentation is not specified in the reviewed record.
Interpretation
Research exposure: not a prescription or starting regimen. It does not reconstruct protocol titration, exclusions or monitoring.

PMID17375985 · October 16, 2026

NOT A RECOMMENDATION.Each amount is attributed to the source identified for that entry: regulatory product labeling, human research, or community and practice sources. These source categories have different evidentiary roles. They are not medical advice, not a protocol, not a recommended or safe dose, and not evidence that it works. Do not use them to start, change or stop any treatment. Talk to a qualified healthcare professional.

Empirical handbook

Listed regimens preserve source/context. An empty layer means no regimen attributable to this identity was verified in this review; it does not prove universal absence of data.

Regulation and safety

Jurisdiction-specific regulatory context

Jurisdiction-specific approval not verified in this card; do not infer global nonapproval.

Adverse effects and unknowns

Transient nasal irritation occurred; limited single-exposure experience cannot characterize chronic harms.

Transient nasal discomfort was reported; sample/exposure limit chronic-safety inference.

Contraindications

See supported safety statements and exact product label; a complete contraindication set has not been established for this catalog material.

A complete list must match the exact authorized product. For experimental materials without verified human labeling, a complete contraindication set is not established here. No list does not mean safety.

Interactions

Only explicitly cited interactions may be asserted; unstudied combinations remain unknown, not interaction-free.

Separate documented interaction, pharmacologic plausibility and unknown interaction. Absence of a blend trial does not establish compatibility.

Studies and trials

Selected studies

PMID17375985 · Open-label phase I

Healthy men.

One intranasal exposure; 8-day study.

Initial tolerability/PK, not cognitive efficacy.

Trial product/population; does not authenticate supplier material or permit simple indirect comparisons.

n = 24

Trials attributed in the package

No trials are attributed in this record.

Trial registration does not establish efficacy or validate commercial material.

Query candidates; attribution pending

FGL · 0 unfiltered query results, not authenticated trials

Query verification: October 16, 2026

Exact phrase intervention query; first three most recently updated records, not exhaustive. Aliases may be missed and heterogeneous products may appear. The total is the unfiltered registry query count, not authenticated trials. Source-integrity holds are excluded from ordinary listings.

View trial registry query

Source issues and references

References include queries and bibliographic handbook attributions; not all are clinical studies. Human review remains pending.

  1. PMID17375985

    Tolerability, safety and pharmacokinetics of the FGLL peptide, a novel mimetic of neural cell adhesion molecule, following intranasal administration in healthy volunteers.

    Anand R, Seiberling M, Kamtchoua T, Pokorny R.

    October 16, 2026

  2. R50

    FGL(L) phase 1 pharmacokinetics, 2007

A community-based bilingual scientific education initiative for healthcare professionals and the general public across the Americas.Currently self-funded; no current sponsors. Formal governance and legal documentation pending.info@peptideamericas.org · Planned contact address — not active yet; please do not send messages.