| Type | poison |
| Category | Special |
| Power | 65 |
| Accuracy | 100 |
| PP | 20 |
| Introduced | Generation 1 |
Sludge deals damage and has a 30% chance of poisoning the target.
Poison or Steel type Pokémon, those with the ability Immunity or those behind a Substitute cannot be poisoned.
When a Pokémon is holding Poisonium Z and uses its Z-Power, Sludge turns into Acid Downpour and has base power 120.
| Gold Silver Crystal | An attack that may poison the foe. |
| Ruby Sapphire Emerald | Sludge is hurled to inflict damage. May also poison. |
| FireRed LeafGreen | Toxic sludge is hurled at the foe. It may poison the target. |
| Diamond Pearl Platinum HeartGold SoulSilver | Unsanitary sludge is hurled at the foe. It may also poison the target. |
| Black White Black 2 White 2 | Unsanitary sludge is hurled at the target. It may also poison the target. |
| X Y O.Ruby A.Sapphire | Unsanitary sludge is hurled at the target. This may also poison the target. |
| Sun Moon Ultra Sun Ultra Moon L.G. Pikachu L.G. Eevee | Unsanitary sludge is hurled at the target. This may also poison the target. |
| Sword Shield B.Diamond S.Pearl | Unsanitary sludge is hurled at the target. This may also poison the target. |
| English | Sludge |
|---|---|
| Spanish | Residuos |
| Italian | Fango |
| Japanese | ヘドロこうげき (Hedoro Kōgeki) |
| German | Schlammbad |
| French | Détritus |