All items limit to 999 in your bag. Also, Rare Candies are not so great. Sure, they level up your Pokemon, but the stats of the Pokemon are weaker when they level up in battle.
you train Pokemon by letting it battle other Pokemon or you can feed it rare candies.
You defeat other Pokemon in battle or use rare candies
Yes your Pokemon gains more extra stuff in battles than with rare candies.
Battle a lot, or use Rare Candies.
That is impossible in Pokemon Platinum, but you can get a ton, by working a lot. At the battle area, you can get rewarded with Rare Candies.
first get alot of BP at the battle tower. then buy alot of rare candies at the reception counter
You can get Rare Candies by ordering them for 48 Battle Points in one of the stalls in the Battle Frontier.
Well, I used my Dowsing MCHN and found 3 rare candies in Anville Town. Also, you can go to the Battle Subway, earn BP points, and buy rare candies.
Well your friends can trade you 100 Pokemon with rare candies or you can get a Pokemon to hold it and go to the battle frontier and clone your Pokemon 99 times then you should have 100 rare candies. In order to get to the battle frontier you have to beat the elite four then you take the boat in snowpoint city and you should be there. Comment To Me
You can't buy them with money, but you can buy them with Battle Points at the Battle Frontier.
Pokerus is a Pokemon sickness that will give your Pokemon more power by doubling the EVs you get from battle. It also spreads to the Pokemon on either side of the infected one after battles. If you mean giving them rare candies will give them Pokerus, no, but if you're asking can you give Pokemon rare candies while they have pokerus, then yes.