Poison Type Weakness
Poison is weak to Ground and Psychic. Check every Poison matchup, 4× dual-type weaknesses and the best counters below.
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Quick Answer: What Is Poison Weak To?
Poison-type Pokémon are weak to Ground and Psychic. These attacking types deal 2× damage to a pure Poison type. Poison resists Grass, Fighting, Poison, Bug and Fairy.
What Is Poison Weak To in Pokémon?
Poison resists five types, including Fighting, Bug and Fairy, and has only two weaknesses: Ground and Psychic.
A pure Poison-type Pokémon takes 2× damage from these attacking types:
- Ground (2×): common moves include Earthquake and Earth Power. See how Ground works in the Ground type guide.
- Psychic (2×): common moves include Psychic and Psyshock. See how Psychic works in the Psychic type guide.
The final result changes when a Poison Pokémon has a second type. Some combinations add a 4× weakness, and others cancel one of the weaknesses above. Use the checker at the top of this page for exact numbers.
Poison Type Strengths
Poison-type moves are super effective (2×) against:
Grass Fairy
Not very effective (½×) against: Poison Ground Rock Ghost
No effect (0×) on: Steel
Poison Type Resistances and Immunities
Resists (takes ½× damage from): Grass Fighting Poison Bug Fairy
Immune to (takes no damage from): None
Poison has 2 weaknesses, 5 resistances and 0 immunities in the current type chart.
Poison Type Traits and Battle Mechanics
- Poison types cannot be poisoned unless the attacker has the Corrosion ability.
- When a Poison-type Pokémon uses Toxic, the move never misses (Gen 6 onward).
- A grounded Poison type removes Toxic Spikes from its side of the field when it switches in.
- Steel types are completely immune to Poison-type moves.
Poison Type Weaknesses for Dual-Type Pokémon
A second type can add a 4× weakness, cancel one of Poison’s normal weaknesses, or give an extra immunity. This table covers every Poison dual-type combination that exists in the games, with real Pokémon examples.
| Type combo | Example Pokémon | 4× weak to | 2× weak to | Immune to |
|---|---|---|---|---|
| Poison Normal | Shroodle, Grafaiai | None | Ground Psychic | Ghost |
| Poison Fire | Salandit, Salazzle, Iron Moth | Ground | Water Psychic Rock | None |
| Poison Water | Tentacool, Tentacruel, Qwilfish | None | Electric Ground Psychic | None |
| Poison Electric | Toxel, Toxtricity, Low Key Toxtricity | Ground | Psychic | None |
| Poison Grass | Bulbasaur, Ivysaur, Venusaur | None | Fire Ice Flying Psychic | None |
| Poison Fighting | Croagunk, Toxicroak, Sneasler | Psychic | Ground Flying | None |
| Poison Ground | Nidoqueen, Nidoking, Clodsire | None | Water Ice Ground Psychic | Electric |
| Poison Flying | Zubat, Golbat, Crobat | None | Electric Ice Psychic Rock | Ground |
| Poison Psychic | Munkidori, Galarian Slowbro, Galarian Slowking | None | Ground Ghost Dark | None |
| Poison Bug | Weedle, Kakuna, Beedrill | None | Fire Flying Psychic Rock | None |
| Poison Rock | Nihilego, Glimmet, Glimmora | Ground | Water Psychic Steel | None |
| Poison Ghost | Gastly, Haunter, Gengar | None | Ground Psychic Ghost Dark | Normal Fighting |
| Poison Dragon | Dragalge, Naganadel, Eternatus | None | Ice Ground Psychic Dragon | None |
| Poison Dark | Stunky, Skuntank, Drapion | None | Ground | Psychic |
| Poison Steel | Varoom, Revavroom | Ground | Fire | Poison |
| Poison Fairy | Fezandipiti, Galarian Weezing | None | Ground Psychic Steel | Dragon |
Watch out for 4× weaknesses: Poison/Fire (Salazzle) takes 4× from Ground, Poison/Electric (Toxtricity) takes 4× from Ground, Poison/Fighting (Toxicroak) takes 4× from Psychic, Poison/Rock (Glimmet) takes 4× from Ground and Poison/Steel (Revavroom) takes 4× from Ground.
Combos that cancel a Poison weakness: Poison/Grass is no longer weak to Ground, Poison/Flying is no longer weak to Ground, Poison/Psychic is no longer weak to Psychic, Poison/Bug is no longer weak to Ground, Poison/Dark is no longer weak to Psychic and Poison/Steel is no longer weak to Psychic.
Best Pokémon to Use Against Poison Types
The safest counters hit Poison Pokémon for super effective damage and also resist Poison-type attacks. These popular Pokémon do both:
| Pokémon | Types | Hits Poison with (2×) | Takes from Poison moves |
|---|---|---|---|
| Excadrill | Ground Steel | Ground | 0× |
| Metagross | Steel Psychic | Psychic | 0× |
| Steelix | Steel Ground | Ground | 0× |
| Iron Treads | Ground Steel | Ground | 0× |
| Bronzong | Steel Psychic | Psychic | 0× |
| Rhyperior | Ground Rock | Ground | ¼× |
Before you switch in, check the opponent’s second type and its coverage moves. Tap any Pokémon to see its full matchup in the calculator.
About This Guide
Written and maintained by Mical Boje, who has been playing Pokémon games for more than 10 years. All matchups, tables and examples on this page come from the same data that powers the Pokémon Type Calculator.
- Rules used: the current type chart, from Gen 6 (X and Y) to Scarlet and Violet.
- Sources: the official main-series games, cross-checked with Bulbapedia’s Poison type page. Pokémon types and forms come from PokéAPI.
- Last updated:
Frequently Asked Questions
What is Poison weak to in Pokémon?
Poison is weak to Ground and Psychic. Each of these deals 2× damage to a pure Poison-type Pokémon.
What is Poison strong against?
Poison-type moves are super effective against Grass and Fairy.
What does Poison resist?
Poison resists Grass, Fighting, Poison, Bug and Fairy.
Which Poison dual types have a 4× weakness?
Poison/Fire (Salazzle) is 4× weak to Ground, Poison/Electric (Toxtricity) is 4× weak to Ground, Poison/Fighting (Toxicroak) is 4× weak to Psychic, Poison/Rock (Glimmet) is 4× weak to Ground and Poison/Steel (Revavroom) is 4× weak to Ground.
What is the best counter to Poison-type Pokémon?
Pokémon that resist Poison moves and hit back super effectively work best, such as Excadrill, Metagross, Steelix and Iron Treads.
Can Poison-type Pokémon be poisoned?
Normally no. Poison and Steel types cannot be poisoned. The only exception is an attacker with the Corrosion ability.
Other Type Weakness Guides
Need the whole picture? See the complete Pokémon Type Chart or the overview of all 18 type weaknesses.