Symptoms and causes

What is

What helps indigestion after eating? Try Rennie antacids tablets.

What does indigestion feel like? Indigestion, also known as dyspepsia, is a general term for pain or discomfort felt after eating in the stomach region, associated with difficulty in digesting food. It can strike at any time but is most common shortly after eating.

Indigestion is very normal, and most people will experience it at some point. You could suffer a couple of times a year or feel symptoms regularly. What are the symptoms of indigestion? The discomfort or pain can range from mild to severe indigestion. How long does indigestion last? It can last for a few minutes to several unhappy hours.

Unfortunately, indigestion can be unavoidable during pregnancy as the body changes hormonally and physically. To find out more about Rennie and pregnancy, visit our heartburn & indigestion during pregnancy page. Indigestion in pregnancy can be easily treatable with Rennie*, and needn't ruin your day.

*Medicines can affect the unborn baby. Always talk to your doctor or pharmacist before taking any medicine in pregnancy.


Icon of a person suffering from heatburn symptoms: burning sensation in chest and throat

Signs and symptoms of indigestion are:

- An indigestion pain that typically starts in the upper abdomen and moves up behind your breastbone

  • Pain behind the ribs
  • Nausea and/or vomiting
  • A rumbling or gurgling stomach
  • A knotted stomach or cramps
  • Bloated stomach
  • Feeling uncomfortable after eating
  • Excessive burping or flatulence
  • A burning sensation in your belly
indigestion causes and symptoms

What causes

Avoid food that causes indigestion.

When you eat, your stomach produces acid. Indigestion is often caused by excess stomach acid coming into contact with the sensitive, protective lining of the stomach, the top part of the bowel, or the oesophagus, which can cause soreness and swelling. This produces a feeling of discomfort which can feel like a ‘fire in your belly’, particularly if your digestive lining is especially sensitive to acid.

We all experience indigestion differently, and its triggers are different for each of us. Try looking out for patterns in what you eat and when you suffer. Other common causes are:

1. Drinking alcohol

Alcohol causes your stomach to produce more acid than normal, which can irritate your stomach lining.1

2. Smoking

The chemicals in the smoke can cause the muscle between the oesophagus and stomach to relax, allowing acid to escape into the digestive system.1

3. A busy stressful lifestyle

Symptoms of indigestion usually increase in times of stress and get better when you’re relaxed. Stress and anxiety can have a huge impact on our digestion, leading to an increased production of stomach acid.1

4. Eating heavy meals or fatty foods

Can irritate the belly. Eating too fast also encourages indigestion.

Constant indigestion sometimes occurs as a result of an ulcer, taking certain medications, or another condition. If you think this might be you, make an appointment with your GP.

Suffering from indigestion? Read some treatment tips to help relieve the symptoms of indigestion.

1. [Accessed 11.02.2020]

2. [Accessed 11.02.2020]

Treating indigestion >


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With its dual action, Rennie® Duo combines its raft-forming and acid-neutralizing properties to provide comprehensive relief and protection from reflux than either action alone.

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