I take USANA's Essentials, CoQ10, & Vit D, guaranteed purity & content. If you are an elite athlete, you can apply for their insurance program in which they will offer you $1m towards a defense fund if you test positive. Their products are clean. (I don't recommend their food supplements or their personal care items since I like gluten free and more chemical free.)

They add alpha lipoic acid to the multi-vitamin, which I use to judge of all multi-vitamins. If a vitamin does not have it, then I consider that they haven't done their research. Alpha lipoic acid regenerates the other anti-oxidants once they have donated their electron to neutralize a free radical. So it recharges the anti-oxidants, otherwise they become 'weak free radicals'--this is why mega doses are not generally recommended. Not because it doesn't work on high free radical production. A lot of people praise "whole food" vitamins, but the reality is that we have to convert it anyway into the chemical format in order to use them. Whole foods are best, but for vitamins, I want them to WORK--whole food vitamins end up coming up way short in the end.

Weigh out your stress levels in life, add training, the toxic world, your capacity to digest and assimilate, and then compare that to your adherence to a stellar diet. Most (all) of us can't eat enough veggies etc. to keep up.