research Pharmacological Review on Purification of Poisonous Plants According to Ayurveda August 2022 in “International Journal of Current Science Research and Review” Ayurveda can make poisonous plants medicinal through specific purification processes.
research Melampus and the Cure of Proetus' Daughters July 2017 in “Hormones” Melampus might have cured Proetus' daughters, who possibly had ergotism or Cushing's syndrome, using the herb Helleborus niger, but a mix of factors could have caused their symptoms.