4-6 hour duration. Surprisingly euphoric. Feel more talkative, outgoing, somewhat reminiscent of cocaine. Not as intellectually vigorous a material as dextroamphetamine, nor as good an aid to concentration. Not as manic or "flowy" as methamphetamine. Much less jittery than mephedrone, butylone, etc. Anorectic, but not as much as I'd expected. Slight nausea. Marked diuresis. Did not note any vasoconstriction. Bit of an edgy comedown but that resolved with sleep.A surprisingly good stimulant - a good bit better than you might think given it's pharmacology. Would revisit.