For players who have the Action Replay cheat code cartridge for the Game Boy, the cheat code for infinite rare candy in "Pokémon Sapphire" is "280ea266 88a62e5c." For players who own the Gameshark cheat device, the code for infinite rare candy is "B1E6FAD7A0A564BC."
For Gameshark users, the rare candy code does not work right away because the item bag needs to be in a certain order. Simply put a single potion at the top of the bag, followed by 99 pieces of orange mail with the rest of the items below it. After the bag is organized, type the code into the Gameshark with the description "RARE CANDY" to turn the mail into the special item.