HomeBlogSour Taste in Mouth all the Time | Sour Taste Home Remedy

Sour Taste in Mouth all the Time | Sour Taste Home Remedy

Having a persistent bitter, acidic, or sour taste in your mouth can be incredibly unpleasant and distracting. It can make eating and drinking less enjoyable and may even cause you to avoid certain foods. If this sour taste lasts more than a few days, it’s likely caused by an underlying condition that needs to be addressed.

What Causes a Persistent Sour Taste?

There are several potential causes for a chronic sour mouth taste:

  1. Acid Reflux/GERD: When stomach acid frequently backs up into the esophagus and mouth, it can leave a long-lasting sour taste. This is a classic symptom of gastroesophageal reflux disease (GERD).

  2. Dry Mouth: Lack of adequate saliva flow can lead to a sour, acidic taste. Dry mouth has many potential causes like medications, radiation therapy, Sjögren’s syndrome, and frequent breathing through the mouth.

  3. Medications: Certain prescriptions can directly cause a sour taste as a side effect, such as:
    • Antibiotics (metronidazole, tinidazole).
    • Blood pressure drugs (captopril, enalapril).
    • Thyroid medications.
    • Aspirin and other NSAID pain relievers.

  4. Poor Oral Hygiene: If you don’t brush, floss, and clean your tongue regularly, bacterial buildup can create unpleasant tastes.

  5. Low-Carb Diets: When following a very low-carb or ketogenic diet, the body’s production of ketones can cause a sour taste for some.

  6. Bacterial Overgrowth: Conditions that allow excessive bacteria growth in the mouth, gut, or sinuses may contribute to a sour taste.

  7. Cancer Treatments: Chemotherapy and radiation to the head/neck area can trigger a sour or metallic taste that lingers.

  8. Pregnancy: Many women report a transient sour or metallic taste during pregnancy, especially in the first trimester.

  9. Other Causes: A sour taste can potentially indicate other medical issues like sinus infections, diabetes, or vitamin deficiencies.

How to Get Rid of a Sour Mouth Taste

If the sour taste is new or occasional, some simple at-home remedies may help eliminate it:

  • Over-the-Counter Products:
    • Antacids like Tums neutralize acid.
    • Saliva substitutes or lozenges to increase moisture.
    • Gum or mints with xylitol to increase saliva flow.

  • Home Remedies:
    • Drink more water to flush out your mouth and stay hydrated.
    • Rinse with a baking soda and water solution.
    • Eat yogurt with active probiotics.
    • Chew sugar-free gum or suck on sugar-free hard candies.

  • Improve Oral Hygiene:
    • Brush teeth thoroughly twice a day.
    • Floss daily.
    • Gently brush the tongue or use a tongue scraper.
    • Use an antibacterial mouthwash.

However, if the sour taste persists for weeks despite these efforts, it likely indicates an underlying medical condition that requires treatment by a doctor.

Some clinical treatments a physician may recommend include:

  • Acid-Reducing Medications: For acid reflux, drugs like proton pump inhibitors or H2 blockers can suppress stomach acid production.

  • Antibiotics: If the issue stems from a bacterial infection or overgrowth.

  • Prescription Mouth Rinses: Special antimicrobial rinses may help treat fungal infections or dry mouth.

  • Address Root Medical Cause: Treating an underlying condition like Sjögren’s syndrome, radiation damage, or medication side effects.

When to See a Doctor

You should make an appointment with your doctor if:

  • The sour taste doesn’t improve after 2-3 weeks of home treatment.
  • It’s accompanied by other symptoms like:
    • Difficulty swallowing.
    • Weight loss.
    • Fevers or fatigue.
    • White patches in the mouth.

  • You suspect it’s caused by a medication you’re taking.

  • You have a known medical condition that could be contributing.

Catching any serious oral or systemic issues early is important, so don’t ignore a lingering sour taste.

Managing an Ongoing Sour Mouth Taste

For some people, the sour taste may be chronic or recurring if there’s an underlying condition that can’t be fully cured. In these cases, the goal is effective management through a combination of strategies:

  • Maintaining Excellent Oral Hygiene: Brushing, flossing, tongue cleaning, and using an antibacterial mouthwash consistently.

  • Staying Well-Hydrated: Drinking plenty of water and using saliva substitutes as needed.

  • Dietary Changes: Identifying and avoiding any foods that seem to worsen the sour taste. Some may need to modify their intake of acidic, spicy, or sugary items.

  • Using Over-the-Counter Products: Hard candies, mints, and gums with xylitol to stimulate saliva production. Antacids to neutralize acid.

  • Regular Dental Visits: Getting routine cleanings and check-ups to catch any oral health issues early.
  • Working with Your Doctor: If related to a medical condition, follow the treatment plan recommended by your physician.

The sour taste may seem to come and go without any obvious reason at times. Keeping a diet journal can help identify any potential dietary triggers to avoid. With some experimentation and dedication, you can learn how to successfully keep the sourness at bay.

Remember, if the sour mouth taste is new, persistent, or accompanied by other concerning symptoms, don’t hesitate to get it evaluated by your dentist or physician. Catching any underlying condition early is important.


A chronic sour, acidic, or bitter taste in the mouth can have many potential causes—some are relatively harmless, while others may indicate a more serious condition. From oral hygiene issues and medications to acid reflux and radiation treatment, there are a variety of reasons this unpleasant taste can linger.

The good news is, there are also many remedies that can help provide relief. Practicing good oral hygiene, rinsing with baking soda solutions, chewing xylitol gum, using over-the-counter products, and treating any root medical issues can all be effective strategies.

If you’ve been dealing with a constant sour taste for weeks without improvement, it’s wise to make an appointment with your doctor or dentist. They can evaluate your situation and suggest the next steps for managing or eliminating this taste disruption permanently.

Don’t resign yourself to living with a nasty sour mouth! Take action by trying some of the tips above or consulting a professional. I’d love to hear if any of these remedies helped improve your chronic sour taste issue—share your experience in the comments below.


The information provided above is for informational purposes only and does not constitute medical advice. It is important to consult with a qualified healthcare professional for personalized medical guidance and treatment.

This website does not promote or endorse any specific medical treatments or services. The information provided is purely for informational purposes and should not be taken as a recommendation or endorsement.

Hey there! I'm Chakkaravarthy, a passion for sharing blog posts that make navigating through detailed hospital profiles a breeze. My goal is to provide you with insights into specialties, facilities, and contact details in the simplest way possible. Email: digichakkara@gmail.com


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