Indigestion: Symptoms & Causes

What is

Taking a picture of a meal on a mobile phone

Indigestion, also known as dyspepsia, is a general term for pain or discomfort felt after meals 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. The discomfort or pain of indigestion can range from mild to severe and 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.


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

Signs and symptoms of indigestion are:

  • A 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

Woman cutting a slice of pizza at table

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.

1. Drinking alcohol

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

2. Smoking

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

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.

4. Eating heavy meals or fatty foods

Eating heavy meals or fatty foods can irritate the belly. Eating too fast also encourages indigestion.

Persistent 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.

Treating Indigestion >


How to help indigestion? What to take for acid reflux? Try Rennie Peppermint

Rennie Peppermint

Containing antacid to neutralise excess stomach acid, Rennie Peppermint tablets work fast to relieve the symptoms of heartburn and indigestion. 

Rennie Spearmint for symptoms of acid reflux, heartburn and indigestion relief

Rennie Spearmint

Containing antacid to neutralise excess stomach acid, Rennie Spearmint tablets work fast to relieve the symptoms of heartburn and indigestion.

Rennie Heartburn, Indigestion & Wind Relief

Rennie Heartburn, Indigestion & Wind Relief

Rennie Sugar Free - heartburn medicine for those who need to monitor their sugar intake.

Rennie Sugar Free Spearmint

Rennie® Sugar Free tablets work in the usual fast way to relieve the symptoms of heartburn and indigestion, but without the sugar for those who need to monitor their sugar intake.

Burning sensation in throat? Rennie Orange will help!

Rennie Orange

A refreshing alternative to mint flavour tablets for treating your heartburn and indigestion. Rennie Orange gives the same fast and effective relief as the rest of the Rennie range.

Rennie Extra is one of the quickest-working heartburn remedies

Rennie Extra

Rennie Extra tablets provide relief from heartburn and acid indigestion in just two minutes.

Rennie Ice for heartburn and indigestion.

Rennie ICE

Rennie ICE are mint flavour tablets containing cooling agents to help cool the heat of heartburn and indigestion. Rennie ICE contains calcium carbonate and magnesium carbonate which turn excess acid into water and other natural substances.

Rennie Deflatine for trapped wind

Rennie Deflatine

Virtually everyone suffers from trapped wind at some point in their lives but many people don’t want to admit it. The good news is that there is a discreet and effective treatment.