Centrum sucks guys! You need a high dosed performance vitamin with lots of b vitamins. Apex is really good for this. Right now I'm taking maxi-sorb MAX for men. It has 8333% of b12, 2500% of pantothenic acid, 1333% of vitamin E, and over 1000% of other b-vitamins. With centrum, you'll be lucky to get 100% on all your b's.