Flask

Flasks are a consumable item similar to Elixirs which enhance particular a player for a period of time upon being consumed. They differ in that the effects do not disapear upon death and they count as both a Battle and Guardian Elixir simultaneously. The effect of a flask is typically stronger than elixirs which are introduced in the same expansion, making them attractive for end-game PvE and PvP content. Though an individual flask may cost more than an elixir, they are often preferred because the effect of elixirs may expire quickly due to death.

There are also several items in the game which are labelled as flasks, such as quest items (ie. Flask of Vrykul Blood) and reagents for crafting (ie. Flask of Oil). However, despite the similarity in name, these items are not consumables and serve a different purpose.

Most flasks are produced by Alchemy. Flask production benefits from Elixir Mastery.

Alchemy flasks
These flasks are created by Alchemists. See also List of flasks (alchemy).

Removed flasks
These flasks were removed from the game in Patch 2.2.0. New flasks were put in their place, and alchemists who discovered these flasks' recipes prior to the patch had them converted to the new recipes.

Unstable flasks
These flasks are purchased with Apexis Shards from either the Crystalforges or the Aether-tech Assistant. Their effects only work in the Blade's Edge Mountains plateaus and in Gruul's Lair. They cannot be made by alchemists.

Shattrath flasks
These flasks are available for purchase with Marks of the Illidari from Aldor or Scryers vendors. The marks are dropped from the raid instances Serpentshrine Cavern, Tempest Keep, Black Temple and Battle of Mount Hyjal. The flasks can be used only in these four raid instances as well.

NOTE: Pure Death and Blinding Light were added with 2.4 patch.

Cataclysm flasks
All flasks introduced in the Cataclysm expansion will add 300 to a single primary stat for one hour and the recipe is learned at a trainer for, with the exception of Flask of Enhancement which provides 80 to either Strength or Intellect or Agility (whichever is highest) and is useable in arenas. This special flask is only available to alchemists and does not benefit from Mixology.

Zen flasks
All flasks introduced in the Mists of Pandaria expansion will add 1000 to a single primary stat for one hour and the recipe is learned via discovery, with the exception of Flask of the Earth which provides 1500 to Stamina.