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Study identifier: NCT07338682 Synced from ClinicalTrials.gov · August 08, 2026
● Study status: Recruiting

Evaluation of the Effect of L-Arginine on the Cognitive Function in Geriatric Patients

Condition: Cognition Disorders in Old Age · Cognitive and Behavioral Impairment  ·  Sponsor: German University in Cairo

PhasePhase 2
Planned participants60
Who can joinAll sexes, 60 Years to no upper limit
Healthy volunteersNoCheck eligibility criteria ↓
WhereCairo, Egypt

Interested? Contact the study team ↓

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About this study

This study aims to evaluate the effect of L-arginine supplementation on cognitive function in geriatric patients. Eligible participants will receive either L-arginine (6 grams once daily) or placebo, and their cognitive performance will be assessed using validated cognitive assessment tools over the study period. The participants will receive the intervention for 4 weeks and followed up every 2 weeks. The primary outcome is improvement in cognitive function, while secondary outcomes include safety, tolerability, and quality of life measures. The findings may provide evidence for the potential role of L-arginine in supporting cognitive health in elderly populations.

This description comes directly from the study's public registry record.

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Contact details are listed per location below or on the registry record.

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Full eligibility criteria (exactly as the study team wrote them)

Inclusion Criteria: * Age \>60 years * Montreal Cognitive Assessment (MoCA) test score from 10-25 (mild to moderate cognitive impairment) Exclusion Criteria: * Presence of neurodegenerative diseases (e.g.: Alzheimer's disease, Parkinson's disease, Huntington's disease, Multiple Sclerosis) * Patients with history of L-arginine intolerance or allergy * Patients with asthma * Patients who recently had an acute myocardial infarction * Patients with history of stroke within 1 yaear * Patients who started or discontinued medications that may affect cognitive function (e.g., CNS psychotropics, antihistamines, or acetylcholinesterase inhibitors) during the study period. * Patients who initiated or stopped antihypertensive medications during the study period. * Patients who initiated or stopped antidiabetic medications during the study period. * Patients who initiated or stopped antihyperlipidemic medications during the study period. * Patients prescribed medications for depression, anxiety, or stress that may impact cognitive function * Patients on nitrates, phosphodiesterase-5 inhibitors, potassium sparing diuretics * Refusal to provide written informed consent

Reproduced word-for-word from the public registry record — the study team can answer questions about it.

Locations (1)

Neurology Department, Al-Azhar University HospitalsCairo, EgyptRecruiting

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