To make a long story very short, I realized many months after my doctor's prescription that I should be taking Nexium (again). I can't imagine why I neglected it except that I had dental and other problems going on. I suffer badly from GERD symptoms, am taking no other medications, and had no side effects when I did take Nexium for a short period of time. Can I use what I still have until I can get to a doctor to admit my mistake? Expiry dates June 2009 and August 2009. I have already taken one pill today.