Potions are magical mixtures commonly brewed in cauldrons and used to create various effects on the drinker. A wizard or witch who specialises in potion brewing is known as a potioneer. Potions are brewed from ingredients with magical properties. Potions can be used as medicine, lethal poison, or give the drinker any effect from strength enhancement to immunity to flames. Potions are not necessarily used by drinking, as some can be applied by physical contact or create an effect simply by being created, such as the Regeneration Potion.