panic disorde
"Just got this medication from the doctor yesterday.  He gave me 10mg tablets and told me to take them 3 times a day.  This morning I took my first one.  I got so light-headed and dizzy I had to lie down.  Then I got nauseous.  I was so light-headed I felt like I was having an out-of-body experience.  I couldn't get up from bed for four hours and even then I was still extremely light-headed for another three hours.  Needless to say I didn't take the other two pills that day. "