How Potions Work: Different kinds of magical liquids are grouped in the category of potions: brews made from enchanted herbs, water from magical fountains or sacred springs, and oils that are applied to a creature or object. Most potions consist of one ounce of liquid.

Potions are consumable magic items. Drinking a potion or administering a potion to another character requires an action. Applying an oil might take longer, as specified in its description. Once used, a potion takes effect immediately, and it is used up.

Mixing Potions: A character might drink one potion while still under the effects of another, or pour several potions into a single container. The strange ingredients used in creating potions can result in unpredictable interactions. When a character mixes two potions together, you can roll on the Potion Miscibility table. If more than two are combined, roll again for each subsequent potion, combining the results. Unless the effects are immediately obvious, reveal them only when they become evident.