I have taken many multi-vitamins over the years but I have never experienced one quite like this. I can really tell when I've taken it and when I have not. I don't have to think back and ask myself if I remembered because my body will tell me right away. I feel so much better, more energized, and think more clearly... all of which is amazing with my Fibromyalgia. Unlike other brands, I don't have to wonder if it's really doing anything for me-I know it is. For me, I'll keep buying only this one as long as they keep making it! Thanks so much LE for your consistent quality products.