What Causes a Metallic Taste When I Cough?
Medically reviewed by Linda Girgis | MD, Girgis Family Medicine on August 21st, 2026.
A metallic taste when coughing typically results from blood in your respiratory tract or medication side effects. Upper respiratory infections can cause small amounts of bleeding in your throat or sinuses, creating that distinctive metallic flavor. Certain medications like antibiotics, antihistamines, and blood pressure drugs affect taste receptors and can intensify during coughing episodes. Other causes include sinus infections, dental problems, or gastroesophageal reflux disease (GERD) where stomach acid irritates your throat. Studies show that approximately 15% of people with respiratory infections experience taste changes. If the metallic taste persists for more than a week or occurs with chest pain, difficulty breathing, or significant blood in sputum, seek medical evaluation promptly.
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