Buy Pure Ethylphenidate Crystal Online the close similarities between ethylphenidate and methylphenidate and the fact that methylphenidate, like cocaine, actually does not primarily act as a “classical” reuptake inhibitor, but rather as an “inverse agonist at the DAT” (also called a “negative allosteric modulator at the DAT”),[1] it is at least very likely that ethylphenidate also primarily acts as an inverse DAT agonist instead of (or at least only secondarily) as a classical reuptake inhibitor