A metallic taste in the mouth can be caused by various factors including poor oral hygiene, certain medications, infections, neurological disorders, vitamin deficiencies, pregnancy, cancer treatments, chemical exposure, and acid reflux. It is often described as an unpleasant sensation similar to licking a coin or chewing on foil. Poor oral hygiene leading to gum disease or tooth infections is a common cause, as is taking medications like antibiotics, antihistamines, or blood pressure drugs. Infections such as sinus infections, colds, or COVID-19 can also alter taste. Other reasons include neurological conditions like Parkinson’s, nutritional deficiencies (especially vitamin B12 and zinc), and treatments like chemotherapy or radiation. Sometimes, exposure to chemicals or acid reflux may trigger this metallic taste as well.
If the metallic taste persists or is accompanied by other symptoms, it is advisable to consult a healthcare provider to investigate underlying causes and receive appropriate treatment.
