Although the potion does not appear in any of the Rolling Demo's levels, it is present in the build and can be accessed through hacking. Nothing really happens upon obtaining this potion due to its unfinished state. According to Jason Wilson's notes, the potion would've made Dan invisible and helped him avoid being seen by enemies for a limited amount of time.
The potion's model was later recycled for the Empty Life Bottle in the game's Japanese release.
- MediEvil Rolling Demo. Developed and published by Sony Computer Entertainment in October 1997.
- MediEvil Rolling Demo (Early Prototype) Unused Stuff by SolidSnake11.