When creature drink this potion is compelled to tell only the truth for 1d4 questions. A creature that drink this potion must make a Charisma saving throw (DC 15). You know whether each creature succeeds or fails on its saving throw.

An affected creature is aware of the effects and can thus avoid answering questions to which it would normally respond with a lie. Such a creature can be evasive in its answers as long as it remains within the boundaries of the truth.

This potion has no color or odor. It can only be detected if the creature cast Detect Poison and Disease spell 

Notes: It comes in a set of 5 small bottles. One bottle is enough for 1d4 questions , Control, Detection, Consumable