| Type | Power | Accuracy | PP |
| Normal | -- | -- | 10 |
| Target | Contact | TM/HM | |
| User only | No | -- | |
When Belly Drum is used by a pokemon, it will lose half of its total HP (by integer division), then its Attack stat will become the maximum possible, even if stat reduction had previously lowered the Attack stat to the minimum possible. This maximum is limited to the 6 step increase limit for any stat on the Stat growth scale. This makes the current Attack rating equal to 4 times its original value.
Belly Drum will fail if it has been used normally and the using pokemon attempts to use Belly Drum for a second time without the Attack stat being altered by a stat reduction move or being reset by the use of Haze or switching normally.