I have always read that taking vitamins was a waste of time and money. This is false, as my brother went to his doctor about tingling sensation in his hands and fingers. The doctor had him take B6, and after a few days, the tingling went away. I took B6, and too my dismay, I has twitching of my eyes, and it was really annoying. So I read all the info on B6, and it does have something to do with nerve stimulation. I stopped taking the B6 because I did not need it, it was massive dose of 100 Mg, and that is far too much if you do not have a deficiency. I started taking Centrum Silver because of my age, and the decrease in the amount, and variety of food I have been eating. One thing about aging is that you body needs different nutrition than when you are young, and your body can process everything you eat efficiently. So as you age, your body can have trouble getting all of your nutrition through your food. The Centrum Silver is just a way to supplement the vitamins my body needs to heal, and my muscles need to recover from a vigorous workout in the gym. You may think that the vitamins are doing nothing, but you may not notice a minor setback in nutrition, so maybe you don';t need it. This can be true if you are relatively young, and your body works as it should, and you have a good diet with a variety of vegetables, and animal protein, minus RED MEAT, stay away from RED MEAT, it is very bad for you, and it is proven to cause cancer growth. Don't let marketing hype, or the fact that you love a good steak, to risk your health on Red Meat. A very small amount will not be harmful, and may actually help, but eating a lot of it is too much. Read More Read Less