Re: BW Question and Answer Thread
You can use vitamins until 510 EVs. You can max out your EV limit with vitamins alone, but you can only get 100 in 5 stats and 10 in another.
Say for Espeon. You give her 10 of all vitamins except attack. That total would be 510 vitamins if you give her one in attack.
If you want to max out certain stats, then you could use 10 vitamins of that stat, and then EV wing from there. :)