I quit smoking on 4/21/2009 using chantex as prescribed. Had some of common side effects of nausea and difficulty sleeping. I felt I could live w/ these but on friday I had full blown panic attack. I'm 43 years old never had one of these before in my life. It was scarey, thought I was going to die. Contacted my doctor he said only knew of one other person w/ this reaction. Anyone out there w/ this affect?