Is there a difference between acid reflux and indigestion?

Quite often, the terms acid reflux and indigestion are used interchangeably without fully understanding the differences between the two.

There are in fact a number of differences between the two as indigestion is not, as many believe, just a milder form of acid reflux.

Rennie have taken the time to look into the two issues, and have put together this guide to allow you to understand the differences for yourself.


Acid reflux is a common condition that affects many people in varying degrees.

The condition sees your throat and oesophagus become flooded from the acid produced by the stomach, causing a burning feeling.

Usually, acid reflux treatment is easy - it can be relieved through medication such as antacids like Rennie Spearmint, which can neutralise the acid in your stomach and stop acid reflux.

Chips crisps and drink on table

If the pain persists it is advised to consult a doctor.

However, the reason many people mistake acid reflux for indigestion is the fact that the former is a symptom of the latter rather than a separate condition. Indigestion has a lot more symptoms than just acid reflux.


Indigestion is a sense of discomfort or pain in the upper abdomen brought on generally by overeating but can also be brought on through stress, pregnancy, smoking or drinking alcohol.

The first symptom of indigestion can often be feeling bloated after eating. It can also bring on feelings of nausea and frequent belching, along with some occasional incidents of regurgitating food.

It can happen anytime, but is most common shortly after eating.

Indigestion is often caused by excess stomach acid coming into contact with the sensitive, protective lining of the digestive system.

It’s this burning feeling that often leads to people believing that acid reflux and indigestion are different conditions   rather than the former simply being a symptom of the latter.

If you do have indigestion (and therefore acid reflux!), then Rennie quickly gets to work to relieve the discomfort.

Rennie helps neutralise the excess stomach acid, turning it into water and other natural substances to ease the discomfort.

To help combat indigestion a good lifestyle and healthy, balanced diet can help decrease the chances of having to deal with either issue.

If the symptoms persist or become more regular, consult with your doctor to discover the best course of action for you.