From Guild Wars Wiki
|Value||Can't be sold|
|Campaign||Eye of the North|
— In-game description
- Received upon accepting The Destroyer Challenge quest.
- Each player can use them once per minute, but only when Destroyers are nearby.
- Alkar will continue to give you new concoctions as long as you do not have any in inventory (allowing you to get several without abandoning the quest).
- To collect additional concoctions, simply ask Alkar about his quest.