I've taken 6 a day 2 at a time,hours apart.I don't recommend doing that.I don't like to take more than 2 in a day.4 if I must.The ephedrine in the product makes me jittery,Hungry,changes my personality etc.6 a day might not sound like that much but it is pushing the extreme to say the least.
My advice is start with two daily and work up from there.I only use the stuff when I feel run down from work.Gotta have a little boost sometimes.