# Potion of Comprehension *Potion, common* - **Weight**: 0.5 lbs. When you drink this potion, you gain the effect of the [Comprehend Languages](comprehend-languages-xphb.md) spell for 1 hour. This potion's liquid is a clear concoction with bits of salt and soot swirling in it. *Source: Dungeon Master's Guide (2024) p. 287*