Bought at walmart & package says proven in clinical studies to show some improvement, up to 10%, within 8 days, more by 30 days & 25% or more by 90 days. Is made from "Apoaequorin 10mg", which is derived from JELLYFISH or so it says. Thought was worth a try for my father, who is have memory issues, demetia starting or progressing. Any information, good or bad would be greatly appreciated... Thanks Pat