Following World War II, the United States military investigated a wide range of possible nonlethal, psychoactive incapacitating agents including psychedelic drugs such as LSD and THC, dissociative drugs such as ketamine and phencyclidine, potent opioids such as fentanyl, as well as several glycolate anticholinergics.

Following World War II, the United States military investigated a wide range of possible nonlethal, psychobehavioral, chemical incapacitating agents to include psychedelic indoles such as lysergic acid diethylamide ( LSD-25 ) and the Tetrahydrocannabinol derivative DMHP, certain tranquilizers, as well as several glycolate anticholinergics.

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