It is a violent irritant of the mucous membranes and given internally it causes emesis, diarrhoea, tetanic convulsions and death.
"The Medicinal Plants of the Philippines"
T. H. Pardo de Tavera
Warm water was given to promote emesis; afterwards large quantities of carbonate of soda were given in solution under the belief that it was an antidote to the poison.
"Some Constituents of the Poison Ivy Plant: (Rhus Toxicodendron)"
William Anderson Syme