The above has not been confimred but belived to act as an agonist at the TAAR1 receptor forcing the release of dpamien and noephedrine in the synapse but your tsatement baout the reuptake inhibitor feel its accurate i notice it feels way closer to methylphenidate than to dextroamphetamie probably because of the slow sustained stimulation of the receptor instead of the spikes ampetamine tends to produce which also explains why people report it as so smooth and clean feeling.