I am a physician (internal medicine/geriatrics) and a pharmacist. Prevagen is not FDA approved and there is zero evidence that it helps memory. Claims that it is "pharmacist recommended" are worthless and the ads give nothing more than anecdotal reports (worthless). I would also be the first to tell you that the approved (prescription only) drugs are not very effective either, but they are FDA approved, based on scientific studies that show some benefit. Our hope is that new, better and safer treatments come online sooner than later. Save your money on Prevagen and similar unproven OTC products. There is a huge profit motive to promote and sell them. Full disclosure, I am long retired from both professions. My wife is cognitively impaired and is on none of these drugs or supplements.