after 3 weeks on the meds(300mg once a day), started itching in the back of my head,which then started behind my arms.I decided to take benedryl,which relieved some. Rash was huge hives,and ictched horribly. I dont think i need a dr. to tell me this isn't workin. after reading these posts I quit, before something else happens. P.s still smokin,and very forgetful!