Weapon poison

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

Weapon Poison can be applied, after which the player will gain the ability to poison an opponent. The poison effect lasts for 1 minute before another dose has to be applied for the poisoning effect to continue.

Dropping monsters

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Production costs
This table is based on the Grand Exchange prices of a vial of water, the kwuarm, and the dragon scale dust. It is accurate assuming all three items are bought from the Grand Exchange and the Weapon poison is sold afterwards.

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Grimy kwuarm is cleaned to become Clean kwuarm added with a Vial of water to make kwuarm potion (unf).

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Then add dragon scale dust to make a Weapon poison.

Trivia

 * After the Evolution of Combat update, existing weapon poison potions were replaced with 3 dose poisons. However the old weapon poison version is still obtainable from monsters as a drop, such as Warped tortoises and Ankous. This version does not have the ability to let the player to poison others, nor apply the poison to any weapons (the original function). In order to solve this problem, drop the potion and it will automatically change to weapon poison (3). This has yet to be fixed.
 * The value of Weapon Poison in Mobilising Armies is 29 Investment Credits.
 * To decant the 4-dose version, players must right-click the potion and use on an empty vial. Using an empty vial on the 4-dose won't decant them down.

Weapon poison Weapon poison