The question is why? Unless you have some kind of condition to treat or you've been diagnosed with some kind of nutritional defficiency I can't see the point of taking supplements. If you do, then the first step is adjusting your diet & lifestyle, and if that doesn't work then consider taking the supplements. IMO, and of course I'm not a doctor, popping pills when you don't need them is just a waste of money, and may actually have negative impacts on your health.
My sister and my Californian brother in law recommend that I start taking these. I don't take any right now and I guess taking them would not hurt. What are the best products? I eat relatively rich but balanced food and drink a fair share of red wine/beer/spirit. I hardly eat sweets and exercise moderately. Would Centrum suffice?
How old are you Aerius? I too am on the far side of 40, am fairly athletic and am well aware of my diet/lifestyle choices as 50 fast approaches. Many of us at this age are looking at our long-term health and what others in the same boat may have helped them at this age to feel better.