- Nov 27, 2009
hi, i have a brother that who had health type delusions 16 months ago. he was put on effexor xl150mgs per day and seroqual xr 600mg. He improved dramatically but in the past few weeks , delusions are returing with accompanying panic attacks. There was a period of days/weeks when he may have not been taking medication but he had definately been taking it for the past few weeks so it looks dissappointing. He still hasn't gone back to get his medication checked as hes an unwilling patient at the best of times. has anyone any experience of medication losing its effect? thanks.