Henbane in Kingdom Come Deliverance 2 is a type of herb that will serve you well on your journey. It is a plant that can be used to craft potions. The herbarium entry informs us that it is also ...

Deliberately hollowed out and plugged with birch tar, the bone – originally from a sheep or goat – was found to contain a large number of seeds of a plant called black henbane (Hyoscyamus niger).