Poison-type Pokémon have long been staples of the competitive scene, acting as defensive pivots and status spreaders. However, every toxic strategy has a literal and figurative antidote. Understanding what Poison is weak to is the first step in dismantling teams built around stall and attrition. In the current battle landscape of 2026, where Poison types have seen a resurgence due to their utility against Fairy-centric builds, knowing your type matchups is more critical than ever.

The Core Weaknesses: Ground and Psychic

When looking at the standard type chart, Poison possesses two primary weaknesses that deal 2x super-effective damage. If you are facing a pure Poison-type opponent, your first instincts should gravitate toward Ground and Psychic-type moves.

Ground: The Earthquake Factor

Ground is arguably the most reliable answer to Poison types. Historically, the logic suggests that the earth absorbs and dilutes toxins, rendering them harmless. In practical gameplay, this translates to some of the highest-damage physical moves in the game.

  • Earthquake: This remains the gold standard. With 100 power and 100 accuracy, it punishes grounded Poison types like Muk or Weezing severely.
  • Earth Power: For special attackers, Earth Power provides a way to bypass the high physical defense often seen on Poison-type walls.
  • Strategic Advantage: Most Ground-type Pokémon also possess high physical bulk, allowing them to tank a Poison Jab or Gunk Shot while preparing a retaliatory strike.

Psychic: Precision vs. Corruption

Psychic moves exploit the perceived lack of mental fortification or the biological vulnerability of Poison types. While Ground focuses on brute force, Psychic focuses on precision.

  • Psychic and Psyshock: The choice between these two is vital. Many Poison types, such as Galarian Slowking or Toxapex, have massive Special Defense. Using Psyshock—which calculates damage based on the target's Physical Defense—is often the secret weapon needed to break through a Poison-type wall.
  • Psychic Terrain: Setting up Psychic Terrain not only boosts the power of these moves but also protects your team from priority moves, which some Poison types use to disrupt momentum.

The Steel Immunity: The Ultimate Wall

Beyond simple weaknesses, the Steel type represents the ultimate hard counter to Poison. Steel is completely immune to Poison-type damage (0x multiplier).

In a battle, switching a Steel type into a predicted Sludge Bomb or Toxic is a game-changing play. Not only do they take zero damage from the attack, but they also cannot be afflicted with the Poison status condition. This makes Steel-type Pokémon like Corviknight or Gholdengo the most efficient "checks" to Poison-based strategies. The only exception to this rule is the Corrosion ability (found on Pokémon like Salazzle), which allows the user to poison Steel and Poison types, though the direct damage from Poison moves still remains at zero.

Defensive Synergies: What Poison Resists

To effectively beat a Poison type, you must also know what not to use. Poison is a formidable defensive type because it resists some of the most common offensive threats in the meta.

Poison-type Pokémon take half damage (0.5x) from:

  • Fighting: Punches and kicks are less effective against toxic, malleable bodies.
  • Grass: Plants are easily withered by toxins.
  • Fairy: This is Poison's biggest claim to fame in the modern era. Poison types are the go-to answer for stopping powerful Fairy-type attackers.
  • Bug: Insectoid attacks struggle to penetrate poisonous carapaces.
  • Poison: Naturally, poison-dwellers are resistant to their own chemistry.

Avoid using these types unless you have a significant level advantage or the opponent's HP is nearly depleted.

Dealing with Dual Types

Rarely will you encounter a pure Poison type in high-level play. Most threats carry a secondary type that can either mitigate their weaknesses or create new ones.

The Poison/Dark Combo (e.g., Alolan Muk, Overqwil)

This is one of the most frustrating combinations to face. The Dark typing grants an immunity to Psychic moves, leaving Ground as the only remaining weakness. When facing these, a strong Earthquake is non-negotiable.

The Poison/Water Combo (e.g., Toxapex, Tentacruel)

While these maintain their weaknesses to Ground and Psychic, they gain a massive weakness to Electric and Freeze-Dry. However, their resistances to Fire, Ice, and Water make them incredibly hard to shift without a dedicated counter.

The Poison/Steel Combo (e.g., Revavroom)

This combination is double-weak (4x damage) to Ground. While it has a plethora of resistances, a single Ground-type move will almost certainly result in a One-Hit KO (OHKO).

Advanced Tactics for 2026 Battles

Beating a Poison type isn't just about clicking a super-effective move; it's about managing the side effects.

Managing Toxic Spikes

One of the most dangerous aspects of Poison types is their ability to set Toxic Spikes. When you switch in your Ground or Psychic counter, you might find them immediately poisoned.

  • Counter-play: If you have a grounded Poison-type Pokémon of your own, switching them in will automatically remove Toxic Spikes from your side of the field.
  • Heavy-Duty Boots: This held item allows your attackers to ignore entry hazards, ensuring your Psychic-type glass cannon doesn't lose HP every turn.

The Air Balloon Trick

Many Poison-type trainers equip their Pokémon with an Air Balloon. This item grants immunity to Ground-type moves until the balloon is popped by any other form of damage.

  • Strategy: Do not waste your strongest Ground move immediately. Use a low-priority move or a multi-hit attack to pop the balloon first, then follow up with the super-effective strike.

Special Accuracy: Toxic

Since Generation VI, when a Poison-type Pokémon uses the move Toxic, it ignores all accuracy checks. It will even hit Pokémon in the middle of moves like Fly or Dig. This makes Poison types extremely reliable at wearing down your team. To counter this, consider using Pokémon with the Magic Guard ability or the Guts ability (which actually benefits from being poisoned).

Top Counters to Poison Types

When building a team to specifically handle Poison threats, consider the following archetypes:

  1. The Bulky Ground Attacker: Pokémon like Garchomp or Great Tusk can take a hit and respond with a devastating Earthquake. Their presence alone often forces Poison types to switch out.
  2. The Faster Psychic Special Attacker: Pokémon like Iron Crown or Hatterene can outspeed and OHKO most Poison types before they can spread status.
  3. The Guts User: Ursaluna is a terrifying counter. If it gets poisoned by the opponent, its Guts ability activates, skyrocketing its Attack stat. It can then use Facade or Headlong Rush to sweep the opposing team.

Summary of Type Effectiveness for Poison

To keep it simple for your next battle, refer to this quick-glance reference:

Interaction Type(s)
Weak to (2x Damage) Ground, Psychic
Damaged Normally (1x) Normal, Fire, Water, Electric, Ice, Flying, Ghost, Dragon, Dark, Rock, Steel
Resists (0.5x Damage) Grass, Fighting, Poison, Bug, Fairy
Immune to (0x) None (Poison types have no immunities)
Offensively Blocked by Steel (Immune)

Final Strategic Considerations

While Poison types are weak to Ground and Psychic, they are rarely "easy" to beat. They excel at "chip damage"—the slow accumulation of status effects and entry hazards that eventually lead to a total team collapse.

To win, you must maintain offensive pressure. If you give a Poison type like Clodsire or Toxapex a free turn, they will use it to Recover, set Spikes, or use Protect to stall for more poison damage. Your Ground and Psychic attackers should be positioned to threaten a knockout immediately. In the 2026 meta, speed and prediction are your best allies. Don't let the toxic cloud settle; break through with the raw power of the earth or the focused energy of the mind.