Weapon poison

Weapon Poison is a members-only item on the OSRS Grand Exchange in the other category.

In-game examine text: "For use on daggers and projectiles."

It has a Grand Exchange buy limit of 2,000 every four hours, a high alchemy value of 86 gp, and item ID 187.

View on OSRS Wiki

Weapon Poison shows an active flip setup with a margin of +158 gp and 47,858 trades over the last 24 hours.

At the buy limit of 2,000 every four hours, max profit per cycle is about 316.0k gp — high margin with healthy liquidity.