Was hoping someone could give me explanation for having bad taste in mouth. It started three weeks ago when I had sinus infection and inner ear problem. I thought it was the antibiotic the dr.put me on so I called and was swithced to another one. Didn't help. It's three weeks later and have been off antibiotic for two weeks and still have nasty taste. Tried brushing teeth several times a day and no difference. The only thing that helps is having a piece of hard candy in mouth all the time. Sometimes it is worse than at other times. Any ideas?