Old School RuneScape Wiki

Weapon poison requires level 60 Herblore to make. It is made by mixing kwuarm potion (unf) and dragon scale dust in a vial of water, giving 137.5 Herblore experience. It is dropped by ankous and shadow warriors. It can also be a reward from Observatory Quest.

Weapon poison deals 4 damage every 15 seconds. If it is not reapplied to the target, the poison deals 1 less damage with each passing minute until the target is no longer poisoned when the damage would be 0.

Weapon poison can be removed from weapons with a cleaning cloth.


Weapon poison.png Weapon poison
Herblore icon.png Store value Alchemy value -
137.5 XP 43 86 -
Herblore.png Herblore level 60
Kwuarm potion (unf).png Kwuarm potion (unf) 1
Dragon scale dust.png Dragon scale dust 1

Dropping monsters

Monster Combat level Quantity Rarity
Shadow warrior 48 1 3; Uncommon
Ankou 75; 82; 86 1 4; Rare