OMEGA said:take a break off all stims for 1 month including caffeinated beverages
then go back and use onlysparingly on lifting days
Omega's right...your system has probably gotten used to the stims you've been taking....try giving it a rest & then resuming...the only other choice is to try different formulas (which your body isn't used to) or up the dosage (which is definitely not a good thing long term)