Prednisone
"I have Bipolar disorder & was given this medication for an infection; 48 hours later I was manic, 72 hours later I became delusional and was experiencing psychosis, unable to identify family & my home. It was very scary because it hit so quick & I didn't know what was happening to me.  I am stable & on regimented medication/lifestyle practices.

Found out those with Bipolar should always
try to shy from this RX & other steroids.  Be careful if you have a mental illness, discuss other options with your doctor, please don't go through my very negative experience."