"i&#039;m on 30mg twice a day. my doctor started me on 15my twice a day and i noticed an extremely positive change within a week. i went from 5  anxiety attacks a day and constant feelings of anxiety to maybe one attack a week and feeling pretty ok. since upped to 60mg a day, along with my celexa, the buspar has definitely done it&#039;s job and prevents any general feelings of anxiety from blowing into full anxiety attacks. i can definately feel a negative difference when i&#039;ve missed a day.  my only concern is that about 20 minutes after i take my morning dose of buspar, i usually get a dizzy, weak, passout feeling that persists for about a half hour. my doctor doesn&#039;t appear concerned about it but it does bother me and feels horrible for that time."