Adderall increases the activity of the neurotransmitters norepinephrine and dopamine in the brain, which results from its interactions with trace amine associated receptor 1 (TAAR1) and vesicular monoamine transporter 2 (VMAT2).dderall increases the activity of the neurotransmitters norepinephrine and dopamine in the brain, which results from its interactions with trace amine associated receptor 1 (TAAR1) and vesicular monoamine transporter 2 (VMAT2).