Ethylphenidate
Ethylphenidate (EPH) is a central nervous system (CNS) stimulant and the ethyl analog of methylphenidate. Ethylphenidate acts as a norepinephrine–dopamine reuptake inhibitor, meaning it effectively boosts the levels of the norepinephrine and dopamine neurotransmitters in the brain, by binding to, and partially blocking the transporter proteins that normally remove those monoamines from the synaptic cleft.