A Pilot Study to Examine the Effect of Egb761 on Plasma Biomarker Levels and on Cognitive Function in Patients With MCI

The goal of this clinical trial is to learn if the drug Egb761, produced from Ginkgo Biloba extract, works to improve the blood level of a biomarker of Alzheimer's disease, called phosphorylated-tau217 (p-tau217), which serves as a biomarker for disease activity in the brain. The main questions it aims to answer are: Does drug Egb761 lower the plasma level of p-tau217 in patients with mild cognitive impairment? Does drug Egb761 improve cognitive and behavioral functions in these patients? Does Egb761 affect the blood levels of neurofilament-light (Nfl) and glial-fibrillary-acidic-protein (GFAP), which serve as additional biomarkers for brain disease activity? Participants will: Take Egb761 twice daily for 6 months Visit the clinic once every 3 months for checkups and tests Keep a diary of their symptoms