A successful attack on the potion can destroy the container. A creature must be able to swallow a potion or smear on an oil. Because of this, incorporeal creatures cannot use potions or oils. Any corporeal creature can imbibe a potion. The potion must be swallowed.
Any corporeal creature can use an oil.
A character can carefully administer a potion to an unconscious creature as a full-round action, trickling the liquid down the creature's throat. Likewise, it takes a full-round action to apply an oil to an unconscious creature. Nonstandard potions are described below. This strange elixir bestows upon the drinker the ability to spit gouts of flame. He can breathe fire up to three times, each time dealing 3d6 points of fire damage to a single target up to 25 feet away.