What are causes of metal taste in mouth?

A metallic taste in the mouth (sometimes described as a bitter or coppery taste) is a common symptom with many potential causes. Some of the most common causes include:

1. Poor dental hygiene: Bacteria that build up on the teeth and tongue can produce sulfur compounds that can cause a metallic taste.

2. Certain medications: Some medications, such as antibiotics (e.g., tetracycline, metronidazole), chemotherapy drugs (e.g., cisplatin), antidepressants (e.g., bupropion), ACE inhibitors (e.g., captopril, lisinopril), and lithium, can cause a metallic taste as a side effect.

3. Medical conditions: Some medical conditions, such as diabetes, thyroid disorders, kidney disease, liver disease, and sinus infections, can cause a metallic taste in the mouth.

4. Metal fillings or crowns: In some cases, metal fillings or crowns in the mouth can cause a metallic taste, especially if they are damaged or corroded.

5. Exposure to metals: Exposure to certain metals, such as lead, mercury, copper, and iron, can cause a metallic taste in the mouth. This can occur through contaminated food or water, breathing in metal fumes, or direct contact with metals.

6. Vitamin and mineral deficiencies: Deficiencies of certain vitamins and minerals, particularly zinc and vitamin B12, can cause a metallic taste in the mouth.

7. Pregnancy: Some women experience a metallic taste in the mouth during pregnancy, particularly in the early stages.

8. Smoking: Smoking cigarettes can cause a metallic taste in the mouth due to the chemicals in tobacco smoke.

If you are experiencing a metallic taste in the mouth, it is important to see a doctor or dentist to determine the cause and receive appropriate treatment. They can investigate the underlying cause and recommend steps to eliminate it, which may involve adjusting medications, improving dental hygiene, or treating any underlying health conditions.