March 27, 2025
Have you ever woken up with a metallic taste in your mouth? Or take a bite of your favourite meal only to find that it tastes coppery and weird?
In such cases, it’s normal to wonder, “Why do I have a metallic taste in my mouth?”
The causes of this phenomenon can range from minor issues like dehydration and side effects from medication to more serious conditions such as diabetes. Understanding these reasons is quite important for finding the right treatment and getting your sense of taste back to normal.
Common Causes of Metallic Taste in the Mouth
Several factors, including lifestyle habits and medical conditions, can cause a metallic taste in the mouth. Here are some common causes:
Poor Oral Hygiene
Neglecting dental hygiene is the most common cause of metallic taste in the mouth. When you don’t brush and floss regularly, bacteria build up in your mouth and form dental plaque. This plaque can harden and lead to gum disease and possibly oral infections. Excess plaque and resulting issues can sometimes alter the sense of taste, making food feel metallic.
Medications and Supplements
Some medications, including antibiotics, antidepressants, and blood pressure drugs, can change how you taste things. Even some vitamins and supplements with zinc, iron, or copper can leave a lingering metallic taste. Sometimes these side effects fade away as the body gets used to the drug. However, if you suspect your medication is the cause, talk to your GP or dentist about alternatives or ways to cope with the side effects.
Dehydration and Dry Mouth
Dehydration causes dry mouth, which means your body isn’t making enough saliva. As saliva washes away bacteria and food particles, not having enough of it can lead to an unpleasant metallic taste.
Pregnancy and Hormonal Changes
During pregnancy, hormonal changes, especially increased levels of oestrogen and progesterone, can affect a person’s sense of taste. This condition is known as dysgeusia. These fluctuations can make certain foods taste different or create a persistent metallic taste in your mouth. This is common during the first trimester, as your body undergoes rapid hormonal changes.
Acid Reflux
Acid reflux, also known as gastroesophageal reflux disease, is a medical condition where stomach acid regurgitates into the oesophagus (the throat), causing irritation and discomfort. This can cause a persistent metallic taste in mouth and chest discomfort, along with other symptoms, especially heartburn and a burning sensation in the throat.
How to Get Rid of Metallic Taste in the Mouth
Here are some simple ways to manage and prevent metallic taste in the mouth:
- Maintain good oral hygiene: Brush twice a day, floss regularly, and use an antibacterial mouthwash.
- Stay hydrated: Drink enough water (not sodas!) to prevent dry mouth and flush out any lingering bad tastes.
- Suck on a citrus or mint: Suck on a lemon slice, drink lemon water, or chew on mint gum to restore your taste buds.
- Rinse with baking soda: Mix a small amount of baking soda and water and rinse your mouth to eliminate the metallic taste.
- Manage acid reflux: If you experience heartburn, try to consume smaller meals and skip the acidic foods.
- Control your diet: Reduce the amount of overly processed or pungent foods.
- Go for routine dental checkups: Regular dental check-ups can help you dentist identify early signs of problems, like gum disease, that may cause weird tastes in your mouth.
In some cases, medical procedures such as conscious sedation used in dental treatments or surgeries may cause a temporary metallic taste. This typically fades once the sedative wears off, but staying hydrated and maintaining oral hygiene can help speed up recovery.
When to Seek Professional Help?
For most people, experiencing a metallic taste in the mouth is temporary and harmless. However, if the taste persists for weeks or occurs alongside other concerning symptoms like fatigue and nausea, it could indicate an underlying health condition such as diabetes or kidney disease. In such cases, it’s important to visit a dentist or doctor for a checkup.
- The taste lasts more than a few days.
- You also have bleeding gums, loose teeth, or bad breath.
- There is pain, swelling, or pus in the mouth.
- You struggle to swallow or have sinus issues.
- It starts after a new medication and affects eating.
- You feel unwell with fatigue, nausea, or weight loss.
- You are on chemotherapy, radiotherapy, or long-term medication, and it affects nutrition.
Seek Urgent Care for Metallic Taste in Mouth with Complete Smiles
Complete Smiles offers same-day emergency appointments if you need to have your mouth checked right away. We also offer first-time patients discounted prices for comprehensive oral examinations at our clinics in Harrow, Bournemouth, and Eccleshall. Call us to find out more about our services, locations, and offers.
Dr. Malavi Sivakanesan (292322)
Dr. Malavi Sivakanesan is the principal dentist and co-founder at Complete Smiles in Harrow, Greater London. She is responsible for establishing the Complete Smiles brand throughout the United Kingdom and Europe and has 5 successful practices under her strong leadership.