Babblejuice

Babblejuice was an alchemical substance that made people talk too much.

Powers
It caused the imbiber to suddenly start speaking of anything that came to mind for up to four hours. Truthfulness and intelligibility were not guaranteed.

History
The substance was difficult to synthesize, requiring a combination of solid alchemical and herbal skills; hedge wizards often traded in it. It sold for about 200 gold pieces.