Why Does My Mouth Taste Bitter?

Bad Taste in Mouth: Symptoms

Taste buds and nerves that lead from the mouth help you enjoy the taste of food and drink, but they can also convey the sensation of a bad taste. Patients report that their mouths taste like old pennies or that they taste metallic, bitter or burning. Sometimes the taste is simply bad. The unpleasant sensations may last continually for days or weeks, or may come and go.