Haunspeir

Haunspeir was a drug that served as a mental stimulant. It was popular among mages and other arcane spellcasters, and was in fact named after a wizard from Neverwinter.

Description
In its consumable form, haunspeir was processed into a paste that resembled tobacco or, on occasion, dried and pressed into a swallowable tablet.

Effects
When taken, the drug significantly increased the intellect of the user for a short duration, a matter of minutes. It had the side effect of making an individual more prone to harm from physical attacks that pierced or cut open the flesh.

If more than one dose was taken within 24 hours, the user was immediately harmed and became twice as susceptible to further damaging effects.