it all depends on how much your taking,everyone is different when I started on 10mg a day it took 6 weeks befor it kicked in.i had headaches,palps and shaking of hands hopeful they caught you in time befor it your symtoms got worse.i have been lucky enough to have gone into remissiom for 3 years but sadly back on meds 4 days now don't no what happened I have the palps back.what dose of med's are you on ?