bipolar disorde
"This medication was extremely effective at stabilizing my moods.  The problems that I had made it so that I could not continue on it and therefore needed to rate it so low (because of the severe side effects).  First off, I literally  saw double for several hours after taking it.  Do you remember the Wrigley's double mint gum commercials?  Well literally that's what I experienced.  It DID go away after several hours afterward but was really weird and gave me a headache when it happened every morning.  My skin, especially my lips, would get numb and tingly.  The biggest problem though was that it gave me constipation so bad that nothing I ate or took could alleviate it.  The ONLY way I could EVER go is if I took a heavy (not mild) laxative."