From SmashWiki, the Super Smash Bros. wiki
The Maxim Tomato is an item that will reduce the damage percent of the person who picks it up.
- In SSB, it subtracts 100% from a character's damage percentage.
- In SSBM it subtracts 50% from a character's damage percentage.
- In each game, a player cannot take any damage for the short amount of time that the Maxil Tomato is replenishing health.