Poison Knife Bloodborne Wiki » Items » Consumables » Poison Knife

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Table of Contents

Basic Information

In-Game Description

Effects

Testing

Availability

Scaling

Notes

Merchants

Availability: Treasures & Item Drops

Key

Basic Information

Icon	Name	Use	No. Held	Stored	Usage Type	QS Bullet Use	Stats Req. / Bonus
	Poison Knife	Knife deals Phys. DMG and build-up Slow Poison	- / 20	- / 99	Finite	-	- / - / - / - D / A / - / -

Poison Knife ❘ 毒メス	Consumable

In-Game Description A knife slathered in poison. This curved knife is as thin and sharp as a surgeon's blade. Often used for self-defence by special doctors in the Healing Church. They say that hunters traditionally avoid the use of poison, likely because the poison is too slow to act in the heat of the hunt. Note 1: The same in-game description in US & UK versions. ✓ Note 2: Original Japanese text on Original Japanese Item Index page. ✓ Effects Poison Knives are very similar to Throwing Knives in how they are used. Their physical damage scales with strength and skill, and, while they are weaker than normal Throwing Knives, they cause poison to build up in the enemy. When enough poison builds up, the enemy begins to take damage over time from the Slow Poisoning status. You can hold up to 20 in your inventory. Each Poison Knife inflicts poison build-up on the target, but the amount is reduced by the enemy's poison resistance; some enemies need to be hit with more knives than others. When poisoned, the enemy will take damage over time. Once again, this can be reduced by the enemy's poison resistance; some enemies will take very little damage. Note that only the physical portion of the knives' damage scales; the poison damage is unaffected by your stats. Against some strong enemies, these knives are a life-saver. Once an enemy is poisoned, you are free to dodge or run away without attacking while it dies. In co-op with another player, coordinating knife usage can be very useful; by throwing Poison Knives together, you can poison an enemy much more quickly. This can also be useful to in conjunction with a weapon slotted with Murky Gems; the combination will help you build up the poison effect both from range and in melee. In PvP successfully poisoning another player will put pressure on them to use an Antidote or heal. This creates an opening for you to finish them off; keep up the pressure! Testing Versus other players: 1500 HP baseline; 1468 HP initial; 935 HP ending; 1468-935 = 533 HP in total 1200 frames in total; 1200/30 = 40 seconds in total. -13 HP per 30 frames (1 second). 1992 HP baseline; 1947 HP initial; 1414 HP ending; 1947-1414 = 533 HP in total; 1200 frames in total; 1200/30 = 40 seconds in total. -13 HP per 30 frames (1 second). Results show that damage is not percentage based on total HP. -13 HP every 30 frames (30 frames per second), in total duration of ~40 seconds with total amount of damage dealt of ~520 + 13 (SP) on last knife. Slow Poison resistance testing: 086 res = -13HP; 533HP lost; 40 seconds 154 res = -13HP; 533HP lost; 40 seconds 238 res = -13HP; 533HP lost; 40 seconds 438 res = -13HP; 533HP lost; 40 seconds Slow Poison resitance has no effect on damage taken from Slow Poisoning nor duration. Versus enemies: In NG you get constant number of -12 HP every second no matter enemy HP or its Slow Poison resistance. Therefore you will deal ~480 HP + 12 (SP) on last knife of damage from slow poisoning during its 40 second effect. Availability (more details in the table below) Treasure in (Main Story): Cathedral Ward [x30], Forbidden Woods [x11] Treasure in (Preset Dungeons): Isz Gravestone [x8] Treasure (available) in (Root Dungeons): Lower Hintertomb [Layer 3-4], Sinister Hintertomb [Layer 3], Isz Gravestone [Layer 1-2], Sinister Isz Gravestone [Layer 1-2] Dropped by (The Old Hunters DLC): Labyrinth Rat Dropped by (Preset Dungeons): Labyrinth Watcher (Cleaver) Throwing Knives version Dropped by (Root Dungeons): Labyrinth Watcher (Cleaver) Throwing Knives version Sold by: Bath Messengers [Hunter's Dream], Chalice Bath Messengers [Chalice Dungeons Common], Patches, the Spider [Chalice Dungeons Rare]. Cosmic Eye Watcher Badge: This badge can be found in Upper Cathedral Ward. Although you won't be able to reach it until very late, picking it up allows you to purchase Twin Bloodstone Shards from the shop. This will allow you to experiment with a wider variety of weapons. The Sedatives it unlocks are also useful, as any hunter who has stared down a Winter Lantern should know! Scaling Scaling determines how much additional damage a tool deals. The tool stat bonus, indicated by a letter grade of S / A / B / C / D / E, and the character's stat's current level each correspond to a percentage value. These are multiplied together and against the tool base damage to determine the bonus damage received. Poison Knife has letter grade of D for Strength and A for Skill. In the table below you will find exact (datamined) AR values for featured character stats. AR (phys.) -- -- -- -- -- 60 -- 10 10 -- -- 64.5 -- 25 25 -- -- 105 -- 25 50 -- -- 126 -- 50 50 -- -- 136.5 -- 99 99 -- -- 150 -- Poison Knife has 0.5 STR scaling and 1 SKL scaling. Poison Knife has Base AR 60 Phys and 70 Slow Poison. Notes Once build-up is filled enemy will take DMG over time from Slow Poisoning [40 seconds]. Only Phys. DMG scales, stats has no effect on the poison DMG. Available for purchase after obtaining Cosmic Eye Watcher Badge.

Merchants

Shop	Buy (Day)	(Evening)	(Night)	(Red Moon)	(NG+)	Sell	Requirement
Bath Messengers [Hunter's Dream]	300	600	1300	2300	2800	60	Cosmic Eye Watcher Badge
Insight Bath Messengers [Hunter's Dream]	-	-	-	-	-	-	None
Chalice Bath Messengers [Chalice Dungeons Common]	-	870	1900	3300	4000	-	None
Patches, the Spider [Chalice Dungeons Rare]	-	1080	2300	4100	5000	-	Spare Patches

Availability: Treasures & Item Drops

There are none Poison Knife treasures in The Old Hunters DLC and none item drops from enemies in the Main Story.

Treasures in Main Story [All]
Cathedral Ward, total number of treasures in area x30, [complete map]
Poison Knife x12, pathway before Foggy Alley.
Poison Knife x18, at the end of Foggy Alley.
Forbidden Woods, total number of treasures in area x11, [complete map]
Poison Knife x8, on Windmill Cogs close to Afflicted Beggar in Large Windmill.
Poison Knife x3, on Windmill Cogs close to Afflicted Beggar in Large Windmill.

Treasures in Preset Dungeons [All]
Isz Gravestone L1, total number of treasures in area x2, [complete map]
Poison Knife x2, top stairs before circular staircase on Lower Floors.
Isz Gravestone L2, total number of treasures in area x6, [complete map]
Poison Knife x6, on Upper Floors near staircase.

Treasures in Root Dungeons [All]
Lower Hintertomb , possible treasure on layers 3 and 4.
Sinister Hintertomb, possible treasure on layer 3.
Isz Gravestone, possible treasure on layers 1 and 2.
Sinister Isz Gravestone, possible treasure on layers 1 and 2.

Item Drop The Old Hunters DLC [% Drop Rate] [All]
Hunter's Nightmare, total number of item drop from enemies in area x1
Labyrinth Rat: Poison Knife x2 [5%], Poison Knife x1 [15%]
Research Hall, total number of item drop from enemies in area x1
Labyrinth Rat: Poison Knife x2 [5%], Poison Knife x1 [15%]

Item Drop in Preset Dungeons [% Drop Rate] [All]
Pthumerian Labyrinth L1, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Pthumerian Labyrinth L2, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Pthumerian Labyrinth L3, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Central Pthumerian Labyrinth L1, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Central Pthumerian Labyrinth L2, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Central Pthumerian Labyrinth L3, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Hintertomb L1, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Hintertomb L2, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Hintertomb L3, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Lower Hintertomb L1, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Lower Hintertomb L2, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Lower Hintertomb L3, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Lower Pthumerian Labyrinth L1, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Lower Pthumerian Labyrinth L2, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Lower Pthumerian Labyrinth L3, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Lower Pthumerian Labyrinth L4, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Ailing Loran L2, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Ailing Loran L3, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Cursed Pthumerian Defilement L1, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Cursed Pthumerian Defilement L2, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Cursed Pthumerian Defilement L3, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Lower Loran L1, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Lower Loran L2, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Lower Loran L3, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Isz Gravestone L1, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Isz Gravestone L2, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Isz Gravestone L3, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Pthumeru Ihyll L1, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Pthumeru Ihyll L2, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]
Pthumeru Ihyll L3, total number of item drop from enemies in area x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]

Item Drop in Root Dungeons [% Drop Rate]
Root Dungeons, total number of item drop from enemies exclusive to Root Dungeons x1
Labyrinth Watcher (Cleaver) Throwing Knives version: Poison Knife x1 [8%]

Key
Requirements	Stat Bonuses
The Requirements determines how high various Stats must be in order to wield the weapon effectively. The Requirement stats for a weapon are W / X / Y / Z: / / / W is the Strength required. X is the Skill required. Y is theBloodtinge required. Z is the Arcane required.	The Stat Bonuses rating indicates the level of bonus you receive based on the associated Stat when you use a weapon. This rating can be S , A , B , C , D , or E (in order from most to least bonus for the associated stat). For more information about the scaling as a whole and its values visit the Scaling wiki page.