My mother is in the advanced stages of dementia and is currently in a nursing facility, being treated with harsh chemicals, which have caused serious, secondary side effects. I looked into alternatives and decided that Ginkgo would be the answer. My mom began taking it, and within the first week, I noticed a significant change in her presence of mind, attitude and alertness. By the second week, my sister, her care giver, asked her doctor what he thought of it, to which he replied that he didn't think it was necessary, so Ginkgo was stopped and back came the drugs. That is the unfortunate side of Allopathic medicine. I truly believe, knowing how she responded in the week that she was given the Ginkgo, had she continued, she would be progressing, rather than regressing, as she is now. Not to let a good supplement go to waste, I began taking what was left, myself. Wow! Instantly I noticed a clarity of thought and a sharpness that had started to wane. This stuff is great! It gave me the boost I needed, when I needed it! It is potent, yet the flavor is very palatable. I take it straight, but It can be mixed in water or juice. Overall, this a very high quality product and I recommend it to anyone, whether or not you have memory problems. Consider it a preventative measure!