For 2 months now, I have had a annoying metallic taste in my mouth. I do not have a sinus or respiratory infection. I began a new medication, buspirone, that I take occasionally, but I can not find anywhere where this is a known side effect. I had my first root canal done 3 months ago…is that what’s causing it? I have good oral hygiene. This is driving me crazy! Should I contact the doctor or dentist!? Good grief, how weird is this?!