XL Candy is a resource in Pokemon Go that allows players to level up their Pokemon beyond the original Level 40 cap, all the way to Level 50. It is a special type of Pokemon Candy that is needed to power up Pokemon from Level 40 to Level 50. XL Candy is Pokemon-specific Candy that can only be fed to that particular species of Pokemon. You can start earning XL Candy when you reach Trainer Level 31. There are several ways to get XL Candy in Pokemon Go, including catching unevolved Pokemon, catching evolved, Legendary, or Mythical Pokemon, successfully catching a Raid boss, hatching eggs, trading Pokemon, walking buddies, and exchanging regular Pokemon Candy. The quickest way to get XL Candy is to catch Pokemon, and the higher the CP, the more likely the XL Candy drop once a certain amount of distance has been walked. To use XL Candy, players need to select the Power Up option, which is the same way as using regular Candy. XL Candy is used to level up Pokemon beyond Level 40, and it takes about 296 XL Candies to power up a Pokemon from Level 40 to Level 50.