To make the process even faster, you can purchase one of the following vitamins to increase a desired EV by ten. They cost 10,000 each at Chansey Supply stores in big cities.
So once you’ve determined the stat on which you want to use vitamins, you’ll need to purchase them. Each vitamin will increase the specific stat by 10 EVs. Every Pokemon has a total of 510 EVs to be distributed among the six stats. Each separate stat can be maxed at 252, meaning you’ll need 25 vitamins of a specific stat to make it out.
At $10,000 each, vitamins are expensive, and they only raise 10 EVs per vitamin, which can add up if you’re looking to max out at 510 EVs. You can buy vitamins from Chansey Supply
eBGPN. In all core series games since Generation III, vitamins that affect stats increase a Pokémon's EVs for a given stat by 10 EV points, but can't increase the total EVs beyond a maximum of 510. Between Generations III and VII , vitamins will also have no effect on an individual stat that already has 100 or more EVs.
You can often max out the EVs by level 20, which leaves the Pokémon free for use in-game; it will also be stronger than normal. Don't lose Pokérus. If your Pokémon get the Pokérus, always keep a few with the virus in the PC to pass on to future Pokémon you wish to train. Use vitamins early.
how many vitamins to max ev