When they say this multivitamin is strong, they're accurate; it turned my urine a vivid lime green color. Despite the fact that this product tastes and smells like a musty ball sack after two days of football practice, I feel and look better. It improves my mood, my skin is brighter, my hair and nails grow faster, and my eyes are whiter than usual, all of which indicate that I'm in better health. It claims to take two days on the bottle, but you only need one. To be honest, I'm not sure I'll use it again because of the stink, but I have a sensitive sense of smell, so it could just be me. I'll stick to chewables for now, but it's a start.