The intensity of EA-3167's effects is unparalleled among known psychoactive substances of any class.[dubious – discuss] Incapacitating effects can last anywhere from 5-10 days, sometimes manifesting as a full 3-day peak of vivid hallucinations, along with prolonged confusion, amnesia, and inhibition of speech and cognition.[4] Some subjects exposed to the drug would not fully recover for almost 20 days.[2] Even six months after exposure, a few subjects demonstrated significant increases in the scores on the hypochondriasis, depression, hysteria, psychasthenia, schizophrenia, and mania scales.[5] The drug's potency caught the attention of the military, which considered weaponizing EA-3167 for topical use, potentially even through a handshake.[4] However, weaponization and further studies were eventually abandoned, possibly due to the extreme nature of its effects and the strain on available study resources caused by conducting human studies for extended periods.[6]

If I didn't know better I'd say those effects sound fictional, even fantastical; what a terrifying substance.