Entactogen

Empathogens or entactogens are a class of psychoactive drugs that produce experiences of emotional communion, oneness, relatedness, emotional openness—that is, empathy or sympathy—as particularly observed and reported for experiences with MDMA. This class of drug is distinguished from the classes of hallucinogen or psychedelic, and amphetamine or stimulant. Major members of this class include MDMA, MDA, MDEA, MDOH, MBDB, 6-APB, methylone, mephedrone, αMT, and αET, among others. Most entactogens are phenethylamines and amphetamines, although several, such as αMT and αET, are tryptamines. When referring to MDMA and its counterparts, the term MDxx is often used (with the exception of MDPV). Entactogens are sometimes incorrectly referred to as hallucinogens or stimulants, although many entactogens exhibit psychedelic or stimulant properties as well.

The term empathogen, meaning "generating a state of empathy", was coined in 1983–84 independently by Ralph Metzner and David E. Nichols as a term to denote a therapeutic class of drugs that includes MDMA and phenethylamine relatives. Nichols later rejected this initial terminology and adopted, instead, the term entactogen, meaning "touching within", to denote this class of drugs, asserting a concern with the potential for improper association of the term empathogen with negative connotations related to the Greek root πάθος páthos ("suffering"). Nichols also thought the original term was limiting, and did not cover other therapeutic uses for the drugs that go beyond instilling feelings of empathy. The hybrid word entactogen is derived from the roots en (Greek: within), tactus (Latin: touch) and -gen (Greek: produce). Neither term is dominant in usage, and, despite their difference in connotation, they are essentially interchangeable, as they refer to precisely the same chemicals.

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