Potion

Potion is medicine.

Source
Potions can be crafted, purchased from vendors, obtained as a quest reward, or from duties.

Crafting
Potion can be crafted by alchemists as a level 12 recipe, producing a stack of 3, with the following materials:
 * x1
 * x1
 * x1
 * x1
 * x1

Vendor
Potions can be purchased for from the following vendors:

Quests
Potions can be obtained as a quest reward from the following quests:

Duties
Potions can be obtained from treasure chests in the following duties:
 * Copperbell Mines
 * Halatali
 * Sastasha
 * The Tam-Tara Deepcroft
 * The Thousand Maws of Toto-Rak