Acidity Medicines Not Working? When Do You Need Advanced GERD Testing?

Author : Vikrant Kale | Published On : 31 Oct 2026

Acidity is a common problem. Many people experience a burning sensation in the chest, sour taste in the mouth or food coming back after meals. These symptoms usually improve with medicines. But what if acidity keeps coming back even after taking medicines regularly?

Frequent acidity may sometimes be a sign of Gastroesophageal Reflux Disease (GERD). If medicines are not giving proper relief, further tests may be needed to understand the actual cause.

Why Are Acidity Medicines Not Working?

Acidity medicines help reduce the amount of acid produced in the stomach. However, they may not solve every type of reflux problem.

There can be different reasons why acidity continues even after taking medicines.

• Incorrect medicine timing: Some acidity medicines work better when taken before meals. Taking them at the wrong time may affect their results.

• Frequent acid reflux: Stomach contents may repeatedly come back into the food pipe.

• Hiatus hernia: A part of the stomach moves upwards through the diaphragm, which can increase the chances of acid reflux.

• Non-acid reflux: Sometimes, stomach contents move back into the food pipe without containing much acid. Regular acidity medicines may not control these symptoms.

• Food pipe movement problems: Problems with the muscles of the oesophagus can cause symptoms similar to acid reflux.

• Sensitive food pipe: Some people feel burning or discomfort even when acid levels are normal.

Therefore, if acidity medicines are not working, simply increasing the dose may not be the right solution. Finding the actual cause is important.

What Is GERD? How Is It Different from Normal Acidity?

GERD stands for Gastroesophageal Reflux Disease. It happens when stomach contents repeatedly flow back into the food pipe (oesophagus).

Occasional acidity after eating spicy or heavy food is common. But when acid reflux happens frequently and affects daily life, it may indicate GERD.

Some common GERD symptoms include:

• Burning sensation in the chest after meals.

• Sour or bitter taste in the mouth.

• Food or liquid coming back into the throat.

• Frequent burping.

• Chest discomfort after eating.

• Difficulty swallowing food.

• Acidity during the night.

• Persistent cough or throat irritation in some people.

If these symptoms happen regularly, it is important to understand why they are occurring.

When Should You Consider Advanced GERD Testing?

Not everyone with acidity needs advanced tests. Most patients can be evaluated through their symptoms, medical history and response to medicines.

However, a doctor may suggest further testing in the following situations:

1. Acidity continues even after taking prescribed medicines correctly.

2. Heartburn keeps returning after stopping medicines.

3. You frequently feel food or liquid coming back into your mouth.

4. Acidity disturbs your sleep.

5. You experience difficulty swallowing food.

6. You have frequent chest burning without a clear reason.

7. Your symptoms do not match the usual pattern of acid reflux.

8. A doctor needs to confirm GERD before planning further treatment.

These tests help identify whether the problem is due to acid reflux, non-acid reflux or another condition affecting the food pipe.

Which Tests Help Diagnose GERD?

Different tests are available to understand the cause of persistent acidity. The doctor recommends a test based on the symptoms and previous medical reports.

1. Upper GI Endoscopy

Upper GI endoscopy is commonly used to examine the food pipe, stomach and the first part of the small intestine.

During the test, a thin flexible tube with a small camera is passed through the mouth. It allows the doctor to see the inner lining of the digestive tract.

It can help identify:

• Inflammation of the food pipe.

• Oesophageal ulcers.

• Narrowing of the food pipe.

• Hiatus hernia.

• Barrett's oesophagus.

• Other possible causes of digestive symptoms.

Endoscopy is useful when acidity is persistent or when warning symptoms are present. However, a normal endoscopy does not always mean that GERD is absent.

2. 24-Hour pH Monitoring Test

Sometimes, patients experience regular acidity even when their endoscopy report is normal.

In such cases, a 24-hour pH monitoring test may be recommended.

This test measures how much acid enters the food pipe over 24 hours. A thin tube is usually passed through the nose and placed in the oesophagus. It records acid levels while the patient follows normal daily activities.

The test helps doctors understand:

• How often acid reflux occurs.

• How long acid stays in the food pipe.

• Whether acid exposure is higher than normal.

• Whether acidity symptoms are related to reflux episodes.

It is useful when the diagnosis of GERD is not clear.

3. 24-Hour pH Impedance Monitoring

Some patients continue to experience reflux symptoms even after taking acidity medicines.

This may happen because not all reflux contains strong stomach acid.

A 24-hour pH impedance test can detect acidic as well as non-acidic reflux. It also helps doctors understand how liquid and gas move through the food pipe.

This test may be useful when:

• Acidity medicines are not providing relief.

• Patients experience repeated food regurgitation.

• Non-acid reflux is suspected.

• GERD symptoms continue despite treatment.

It gives more information about reflux than routine pH monitoring.

4. Oesophageal Manometry Test

Oesophageal manometry is a test that checks how the muscles of the food pipe work.

The food pipe has muscles that help push food towards the stomach. If these muscles do not work properly, patients may experience swallowing problems or symptoms similar to reflux.

During the test, a thin tube is passed through the nose into the food pipe. It measures muscle pressure and movement while the patient swallows small amounts of water.

This test may help identify:

• Poor movement of the food pipe.

• Problems with the lower oesophageal sphincter.

• Achalasia.

• Other oesophageal movement disorders.

It is also useful before certain anti-reflux procedures or surgery.

Difference Between Advanced GERD Tests

The doctor will decide which test is suitable. Every patient does not need all these investigations.

Can Acidity Improve Without Taking More Medicines?

Yes. The treatment depends on why acidity is happening.

For some people, small changes in daily habits can help control reflux symptoms.

Here are a few simple steps that may help:

• Eat smaller meals instead of eating too much at one time.

• Avoid lying down immediately after meals.

• Maintain a healthy body weight.

• Avoid late-night heavy dinners.

• Identify foods that trigger your acidity.

• Stop smoking.

• Raise the head end of the bed if you experience night-time reflux.

• Avoid tight clothes around the stomach.

Continue medicines as prescribed by your doctor. Do not increase or stop acidity medicines on your own.

If the problem is related to non-acid reflux or food pipe movement, the treatment may be different from regular acidity treatment.

When Should You Consult a Doctor?

Occasional acidity is usually not a major concern. However, frequent symptoms should not be ignored, especially when they do not improve with treatment.

Consult a doctor if you experience:

• Difficulty swallowing food.

• Pain while swallowing.

• Unexplained weight loss.

• Repeated vomiting.

• Blood in vomit.

• Black stools.

• Persistent chest discomfort.

Severe or new chest pain, especially with sweating, breathlessness or pain spreading to the arm or jaw, needs immediate emergency medical attention. Do not assume that it is acidity.

If you are looking for a Stomach Specialist, a gastroenterologist can evaluate your symptoms and decide whether further GERD testing is required.

Frequently Asked Questions

1. Why is my acidity not going away even after taking medicines?

Acidity may continue due to frequent reflux, incorrect medicine timing, hiatus hernia or non-acid reflux. Sometimes, the food pipe may also be more sensitive than normal. A proper evaluation can help identify the cause.

2. When should I get an endoscopy for acidity?

An endoscopy may be advised when acidity continues despite appropriate treatment, or when symptoms such as difficulty swallowing, repeated vomiting or unexplained weight loss are present.

3. Can I have GERD even if my endoscopy report is normal?

Yes. Some patients have GERD even when their endoscopy findings are normal. A 24-hour pH monitoring test may help confirm whether acid reflux is present.

4. What is the difference between acidity and GERD?

Acidity is commonly used to describe symptoms such as heartburn and sour burps. GERD is a condition in which stomach contents repeatedly flow back into the food pipe and cause troublesome symptoms or complications.

5. Can GERD cause cough and throat irritation?

Yes. GERD may contribute to persistent cough, throat irritation and voice changes in some people. However, these symptoms can also occur due to allergies, infections and other conditions.

6. Which test is best for diagnosing persistent acid reflux?

There is no single test suitable for every patient. Endoscopy, 24-hour pH monitoring and pH impedance testing are used in different situations. The doctor selects the test based on symptoms and medical history.

7. Which doctor should I consult for acidity that does not improve?

A gastroenterologist can evaluate frequent acidity, heartburn and suspected GERD. An Acidity Specialist in Pune can assess your symptoms and decide whether advanced investigations are needed.

Conclusion

Acidity medicines not working does not always mean that you need stronger medicines. Sometimes, the problem may be related to non-acid reflux, a hiatus hernia or problems with the movement of the food pipe.

Tests such as upper GI endoscopy, 24-hour pH monitoring, pH impedance monitoring and oesophageal manometry can help identify the actual reason behind persistent symptoms.

If you experience frequent acidity or heartburn despite taking medicines, do not ignore it. Consult a gastroenterologist to understand the cause and choose the right treatment.

About Dr. Vikrant Kale

Dr. Vikrant Kale is a Consultant Gastroenterologist, Hepatologist and Interventional Endoscopist at Kaizen Gastro Care, Wakad, Pune. He has more than 18 years of experience in managing digestive disorders, liver diseases, inflammatory bowel disease (IBD) and gastric conditions.

He completed his MRCPI from the Royal College of Physicians of Ireland and fellowships in Upper and Lower GI Endoscopy and Inflammatory Bowel Disease from Oxford University, UK, in 2018.

His clinical experience includes 8,000+ gastroscopies, 5,000+ colonoscopies and 3,000+ ERCP procedures.

Clinic Address: Kaizen Gastro Care, Shop No. 208/209, Oriana Crest Building, Datta Mandir Road, Wakad, Pune, Maharashtra 411057.