Your lungs have the ability to absorb potions like a sponge.
Benefit: When you drink a potion, you may choose to store it in your lungs for up to one hour per class level. As a standard action that does not provoke attacks of opportunity you may consume the potion stored in your lungs. If you fail a saving throw against an inhaled poison while you have a potion stored in your lungs you may as an immediate action violently expel the potion as a useless phlegmy goo and reroll the saving throw with a bonus equal to the potion’s caster level. While there is a potion stored in your lungs, your breathing is accompanied by clicking, bubbling, and rattling sounds. You can have no more than one potion stored in your lungs at any time.
Normal: Drinking a potion is a standard action that provokes an attack of opportunity.
Book of Heroic Races: Advanced Changelings. © 2015, Jon Brazer Enterprises