Purple sweets

Purple sweets are a treasure trail reward. When the player eats one, they receive the message: The sugary goodness heals some energy. It heals 20% energy per sweet eaten, and also heals 1, 2 or 3 Hitpoints. Since they are stackable, they are a better choice if you are keen on saving inventory space and carrying extra food instead of energy potions - they allow for nearly unlimited restoration of energy and Hitpoints, although high demands would cause costs to become limiting due to the slow rate at which purple sweets enter the game. This is also the only stackable item to change its image after 5 or more sweets are present, other than coins (changes at 1, 2, 3, 4, 5, 10, 25, 100, 250, 1,000 and at 10,000).
 * See also: Sweets

These sweets can be obtained from all levels treasure trails, though higher level treasure trails yield greater amounts at a time.

Note that purple sweets are different than sweets, a non-tradeable item from the 2005 Halloween Event. These sweets disappeared after the 2005 event, even if they were stored in a bank.

There was also a glitch when fighting a monster, while at 1 hitpoint you would retain infinite health. This glitch was shown in video by many players. Before this glitch was fixed, many players would abuse this glitch at TzTok-Jad with Ring of recoil and the purple sweets.

Trivia

 * Since the sweets can stack, they heal the most hitpoints per inventory spot, limited only by the amount the player has and the 2,147,483,647 limit of items you can have. 2,147,483,647 purple sweets means you can heal:                       21,474,836,476,442,450,941 hitpoints.