Poison-type weakness
Poison-type defenders take ×1.6 from Ground, Psychic — those are the moves you bring when a Poison raid boss or Poison-type gym defender is in front of you. Below is the full chart of what hits Poison hard, what resists Poison, the inverse (where Poison attacks shine and where they fall flat), dual-type matchups for the most common Poison-pair defenders in the game, and the top 5 attackers per super-effective type pulled from the live tier list.
Single-type Poison defenders take ×1.6 from any move of the listed weak-to types. Dual-type Poison defenders stack multiplicatively — a second weakness from their partner type can push the multiplier all the way to ×2.56. Resisted attacks deal only ×0.625, and doubly resisted attacks (a stack of two ×0.625) drop damage to roughly ×0.39 — never bring those into a Poison fight.
Use Poison attackers when the boss in front of you is one of the listed types. Stack STAB (×1.2) on top by picking a Poison-type mons that knows a Poison fast and Poison charged move. The combined multiplier is ×1.92 before weather.
Avoid Poison attackers when the defender is one of the listed types. Resisted damage cuts your DPS by 37.5%; doubly-resisted damage cuts it by 61%. In raids this is the difference between a 3-account clear and a relobby.
Most Poison-type bosses in the game are dual-type. Combined effectiveness multiplies through both types, so a Poison/X defender may be ×2.56 weak to a single attacker type, or fully neutral if the partner type cancels the Poison weakness. Pick the attacker type that maxes the multiplier.
| Dual-type | Examples | Top weakness | Mult |
|---|---|---|---|
| Poison / Grass | Venusaur, Roserade, Amoonguss | Fire | ×1.60 |
| Poison / Ground | Nidoking, Nidoqueen | Water | ×1.60 |
| Poison / Dark | Drapion, Skuntank | Ground | ×1.60 |
| Poison / Flying | Crobat, Golbat | Electric | ×1.60 |
| Poison / Bug | Beedrill, Venomoth | Fire | ×1.60 |
| Poison / Fire | Salazzle | Ground | ×2.56 |
| Poison / Water | Tentacruel, Toxapex | Electric | ×1.60 |
Leagues: Great / Ultra.
Nidoqueen, Roserade, Drapion, Skuntank — anti-Fairy + GBL ladder staples.
Knowing the Poison weakness chart matters as much in PvP as in raids — a Poison lead into one of the listed weak-to types loses the matchup before shields even come into play. Always check the dual-typing of the opposing lead: a single Poison mons is harder to counter than a Poison/Y where Y stacks a second weakness.
›What is Poison-type weak to in the game?
Poison-type defenders take ×1.6 damage from Ground, Psychic attacks. Bring an attacker of one of those types to break a Poison raid boss or gym defender fastest.
›What resists Poison-type attacks?
Poison attacks are resisted by Poison, Ground, Rock, Ghost (×0.625 damage), and doubly resisted by Steel (×0.39 damage). Avoid sending Poison attackers into those defenders.
›What is super-effective against Poison?
Poison attacks deal ×1.6 to Grass, Fairy. Use Poison attackers to clear those defenders quickly in raids.
›Which Poison-type mons are best in PvP?
Nidoqueen, Roserade, Drapion, Skuntank — anti-Fairy + GBL ladder staples. League fit: Great / Ultra.
›How do dual-type Poison defenders compute damage?
The matrix is multiplicative. If a Poison/Y dual-type has two weaknesses to the attacking type (one from Poison, one from Y), the multiplier stacks to ×2.56 — the maximum without STAB / weather.
The complete attacker-vs-defender chart for every type pairing in the game.
Top S-tier and A-tier attackers grouped by attacker type — full picker for Poison bosses.
Pick an actual current raid boss and get counter recommendations scored by tier × type effectiveness.