As far as which supplements I take. ECA stack, whey and creatine. Strong randomized controlled trials support all three. There is no good data showing any benefit to a multi-vitamin in normal health meat eating non athletes to my knowledge. I take one because they are cheap, I like neon urine and I have not had the time to do more reading about studies of a multivitamin in athletes.

I have not looked into many other products which may well work. If I heard rave reviews and no studies had been done I would likely give it a shot depending on the price. I think it is likely there are substances out there which would benefit me, but I am not going to shotgun the question and just take everything someone with a magazine is willing to print a testimonial for.