Any CNS stimulant can do it and does for me. This includes all AS...The more powerful ones, of course, with a more pronounced effect. If you're geneticaly predisposed to the iron fisted grip of anxiety then AS can aggrevate it. Those whose minds are free from the shackles of anxiety feel generally up-beat while on. Why? Because AS stimulate the nervous system. It is this very stimulation that feels up lifting for others that can trigger mild to sever anxiety in those unfortunate enough to be inflicted with an easily stressed mind. Oh yeh. EQ is the worst for me.