Many substituted phenethylamines are psychoactive drugs which belong to a variety of different drug classes, including central nervous system stimulants ( e . g ., amphetamine ), hallucinogens ( e . g ., 2, 5-dimethoxy-4-methylamphetamine ), entactogens ( e . g ., 3, 4-methylenedioxyamphetamine ), appetite suppressants ( e . g . phentermine ), nasal decongestants and bronchodilators ( e . g ., pseudoephedrine ), antidepressants ( e . g . bupropion ), antiparkinson agents ( e . g ., selegiline ), and vasopressors ( e . g ., ephedrine ), among others.
