you want something to get the red blood cells value up, i think everyone supplements iron (folic acid, b12), u want to use some vitamin e ( give apart from the iron supplement ) and you're going to need something to replenish electrolytes after the training.

i use a little more then that but who doesnt give any of these stick up your finger, lol.
hope this helps a little bit, for the rest agree with the other posters. .