Started taking Zyrtec after following the advise of my pharmacist...

Started taking Zyrtec after following the advise of my pharmacist. BIG MISTAKE!! I have never had symptoms of depression before. After one week on the medicine it took everything in me just to make myself get out of bed. The last day I took the medicine I felt that there was nothing to live for and everyone would be better off if I was gone. Never before had I ever thought about suicide. Until then. It took about three days with no Zyrtec before I started feeling this "blackness" lift off of me.