A friend did an thing where he shadowed a neurologist for a week. He saw the neurologist use cocaine in an arm surgery: its a vasoconstrictor (stops bleeding)

A friend did an thing where he shadowed a neurologist for a week. He saw the neurologist use cocaine in an arm surgery: its a vasoconstrictor (stops bleeding) and local anesthetic. Dabbed a little on the cut and it stopped bleeding or hurting. Pretty amazing. If it wasn't for the pesky reward-system hijacking, cocaine would probably be in everyone's emergency first aid kit.