Belladonna

Belladonna, or wolfsbane was a poisonous herb known to cure lycanthropy. It was known to be also toxic. Anyone eating belladonna was likely to find themselves weakened physically.

Uses
If a victim bitten by a lycanthrope ate a sprig of belladonna within an hour of the bite, he or she had a chance of not contracting the disease. The belladonna, however, had to be relatively fresh, not picked any later than a week ago.

Belladonna was also used in gas bombs invented by the Silver Stake lycanthrope-hunting organization.

Locations

 * Isle of Balduran:
 * Belladonna was known to grow on this small island in the Trackless Sea