I took Welchol power for 40 days to control cholersterol . I been off for 17 days now . How long does it take to get out of my system ? I have dizziness , headache , blurr vision . brain numb feeling , ringing ears , upset stomach when I eat certain foods , indigestion . I have been to Heart Dr , Family Dr , Neuro Dr and ER . Waiting to get MRI done . Thankx , John