Phosphatidylserine Containing ω–3 Fatty Acids May Improve Memory Abilities in Non-Demented Elderly with Memory Complaints: A Double-Blind Placebo-Controlled Trial Vakhapova V.a · Cohen T.c · Richter Y.c · Herzog Y.c · Korczyn A.D.b Author affiliations aNeurology Department, Tel-Aviv Sourasky Medical Center, and bSieratzki Chair of Neurology, Tel-Aviv University Medical School, Tel-Aviv, and cEnzym