Parempo (3.5e Equipment)
From D&D Wiki
This syrup concoction acts like a potion, but doubles the duration of any other potion consumed up to one round previous. It has no effect on potion effects that have an instantaneous duration, such as a potion of cure light wounds. Potion durations are doubled from their initial starting duration and not the remaining duration.
- A character drinks a potion that has a duration of 8 rounds.
- His next turn, he drinks Parempo.
- The total duration of the potion becomes 16 rounds, not 14, for doubling the initial total rounds (8) minus the first round, leaving 15 rounds of effect.
Contains enough Parempo to affect 4 potions. 1000 gp