Chemicals tested
The agents tested included chemical warfare agents and other related agents (inactive substances or placebos such as saline were used):
Anticholinesterase nerve agents (ex., sarin and common organophosphorus (OP), and carbamate pesticides)
Mustard agents
Nerve agent antidotes atropine and scopolamine
Nerve agent reactivators (ex., the common OP antidote 2-PAM chloride)
Psychoactive agents (ex., LSD, PCP, cannaboids, and BZ)
Irritants and riot control agents
Alcohol and caffeine
Agent Purple is the code name for a powerful herbicide and defoliant used by the U.S. military in their herbicidal warfare program during the Vietnam War.