Physostigma venenosum
Eserine (or Physostigmine) is a toxic alkaloid which occurs naturally in the Calabar bean. Medically it is used to treat Glaucoma, and can be used as an antidote to hyoscine poisoning.
Characters poisoned with eserine
- Barbara Franklin - Curtain (accidentally, she intended to murder her husband)
- Aristide Leonides - Crooked House
