Etilamfetamine, also known as N-ethylamphetamine and formerly sold under the brand names Apetinil and Adiparthrol, is a stimulant drug of the amphetamine family.

Ethylamphetamine is a potent dopamine releasing agent (DRA) in vitro, with an EC50Tooltip half-maximal effective concentration of 88.5 nM.

[5][6] In terms of structure–activity relationships, the potency of amphetamines as dopamine releasing agents and reuptake inhibitors decreases with increasing N-alkyl chain length.

[4] The same relationship, for monoamine release and reuptake inhibition generally, has been shown with 4-methylamphetamine and its N-alkylated derivatives like 4-methylmethamphetamine and so forth.

[7][8] Ethylamphetamine is inactive as an agonist of the mouse and human trace amine-associated receptor 1 (TAAR1), whereas findings in the case of the rat TAAR1 are conflicting.