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Gaviscon Peppermint liquid relief oral suspension 600ml

Gaviscon Peppermint liquid relief oral suspension 600ml

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  • ✔️ Forms an alginate raft to block acid reflux at source
  • ✔️ Relieves heartburn, indigestion, and acid reflux symptoms
  • ✔️ Refreshing peppermint flavour for a pleasant experience
  • ✔️ Suitable for adults and children aged 12 and over
  • ✔️ Large 600ml bottle provides extended supply at home

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What Is Gaviscon Peppermint Liquid and How Does It Relieve Heartburn?

 

If you've ever felt that burning sensation creeping up your chest after a meal, you'll know how uncomfortable heartburn can be. Gaviscon peppermint liquid is a well-established, over-the-counter oral suspension designed to provide fast, effective relief from heartburn, acid reflux, and indigestion. Available in a generous 600ml bottle, it's a practical choice for anyone who experiences these symptoms regularly. The refreshing peppermint flavour makes it far more pleasant to take than many alternatives, and it's suitable for adults and children aged 12 and over.

Heartburn occurs when stomach acid travels back up into the oesophagus — a process known as gastro-oesophageal reflux. It's extremely common in the UK, affecting millions of people at some point in their lives. If you're looking for a reliable option to manage these symptoms at home, you'll find a wide range of suitable products in our indigestion collection.

 

How Does Gaviscon Peppermint Liquid Oral Suspension Work?

 

Gaviscon works through a unique alginate-based mechanism that sets it apart from standard antacids. Rather than simply neutralising acid in the stomach, it creates a physical barrier — often called a "raft" — that sits on top of stomach contents and prevents acid from rising into the oesophagus.

  • Sodium alginate reacts with stomach acid to form a thick, viscous gel.
  • This gel floats on the surface of stomach contents, forming a protective raft.
  • Sodium bicarbonate helps the raft to float by producing carbon dioxide bubbles within the gel.
  • Calcium carbonate strengthens the raft and provides mild antacid activity.
  • The raft physically blocks acid from refluxing upward into the oesophagus, reducing the burning sensation.

This raft-forming action typically begins within minutes of taking the suspension, making it a practical choice for post-meal relief.

 

Who Is Gaviscon Peppermint Liquid Suitable For?

 

This suspension is suitable for a broad range of people experiencing mild to moderate digestive discomfort. It's particularly useful for those who prefer a liquid formulation over tablets, or who find swallowing tablets difficult.

  • Adults and children aged 12 and over with heartburn or acid reflux
  • Pregnant women experiencing heartburn (under pharmacist or GP guidance)
  • People who prefer a liquid over tablet formulations
  • Those seeking relief after meals or at bedtime

It is not suitable for children under 12 without medical supervision, or for individuals with known hypersensitivity to any of the active or excipient ingredients.

 

How Does Gaviscon Peppermint Liquid Compare to Gaviscon Advance?

 

Feature Gaviscon Peppermint Liquid 600ml Gaviscon Advance Liquid
Active ingredients Sodium alginate, Sodium bicarbonate, Calcium carbonate Sodium alginate, Potassium bicarbonate
Sodium content Higher sodium per dose Lower sodium per dose
Suitable for low-sodium diets Less suitable More suitable
Pack size 600ml 500ml (standard)

 

Is Gaviscon Peppermint Liquid Safe to Store at Home?

 

Yes — Gaviscon peppermint liquid is straightforward to store. Keep it below 30°C, away from direct sunlight, and never freeze it. Once opened, check the expiry date on the bottle and discard any unused suspension after the stated period. Always keep it out of the reach and sight of children.

If you're managing multiple digestive concerns alongside heartburn — such as bloating or cramping — it may be worth exploring our IBS and cramps collection for complementary options. As always, speak to your pharmacist if you're unsure whether this product is right for you.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Gaviscon Peppermint Liquid Relief Oral Suspension 600ml specifications
Treatment category Heartburn, acid reflux, indigestion
Mechanism of action Alginate raft-forming agent
Effective for Heartburn, gastro-oesophageal reflux, dyspepsia
Suitable for Adults and children aged 12 and over
Active ingredients Sodium alginate 250mg/5ml, Sodium bicarbonate 133.5mg/5ml, Calcium carbonate 80mg/5ml
Pack size 600ml
UK classification General Sale List (GSL)
Drug class Alginate antacid
Preparation Oral suspension
Route of administration Oral

Specifications of Gaviscon Peppermint Liquid Relief Oral Suspension 600ml

 

What Is Gaviscon Peppermint Oral Suspension and What Is It Used For?

 

Gaviscon Peppermint Liquid Relief Oral Suspension is an over-the-counter medicine used to relieve the symptoms of heartburn, acid reflux, and indigestion. It contains three active ingredients — sodium alginate, sodium bicarbonate, and calcium carbonate — which work together to form a protective raft on top of stomach contents. This raft prevents stomach acid from rising into the oesophagus, easing the burning discomfort associated with reflux. It is available without a prescription and is classified as a General Sale List (GSL) medicine in the UK.

 

What Do You Need to Know Before Using Gaviscon Peppermint Liquid?

 

Before taking this suspension, it's important to check whether it is appropriate for you. There are certain situations where you should not use it, or where you should seek advice first.

Do not use this product if you:

  • Are allergic to sodium alginate, sodium bicarbonate, calcium carbonate, or any other ingredient in the suspension
  • Are under 12 years of age (unless directed by a doctor)
  • Have been told to follow a strict low-sodium or sodium-free diet
  • Have severe kidney (renal) impairment

Speak to your pharmacist or GP before use if you:

  • Are pregnant or breastfeeding
  • Have kidney disease or reduced kidney function
  • Are on a controlled sodium intake for heart or blood pressure conditions
  • Have phenylketonuria (check excipient list for aspartame content)

Drug interactions to be aware of:

  • Gaviscon may reduce the absorption of certain medicines if taken at the same time — always leave at least a 2-hour gap between this suspension and other oral medicines
  • Medicines particularly affected include some antibiotics, thyroid medicines, and bisphosphonates

 

How Should You Use Gaviscon Peppermint Liquid Correctly?

 

Always use this medicine exactly as described in the patient information leaflet or as directed by your pharmacist. Do not exceed the stated dose.

  1. Shake the bottle well before each use.
  2. Measure the correct dose using the measuring cup provided with the bottle.
  3. Take the suspension after meals and at bedtime.
  4. Swallow the suspension directly — do not dilute it with water.
  5. Do not take more than four doses in any 24-hour period.
Indication Age Group Dose Frequency
Heartburn / acid reflux Adults & children 12+ 10–20ml After meals and at bedtime (max 4 times daily)
Heartburn / acid reflux Under 12 Not recommended without medical advice

 

What Are the Possible Side Effects of Gaviscon Peppermint Liquid?

 

Like all medicines, Gaviscon Peppermint Liquid can cause side effects, although not everyone experiences them. Most side effects are mild and resolve on their own.

Common side effects:

  • Bloating or flatulence (wind)
  • Nausea

Less common side effects:

  • Constipation or diarrhoea
  • Stomach discomfort

Rare but serious — stop use and seek immediate medical help if you experience:

  • Signs of an allergic reaction: skin rash, itching, swelling of the face, lips, or throat, difficulty breathing

If you're also managing other digestive symptoms such as loose stools, our diarrhoea collection may have suitable options to consider alongside your pharmacist's advice.

 

How Should You Store Gaviscon Peppermint Liquid?

 

Correct storage helps maintain the effectiveness and safety of this suspension. Follow these guidelines:

  • Store below 30°C
  • Do not freeze
  • Keep away from direct sunlight and heat sources
  • Keep the bottle tightly closed when not in use
  • Keep out of the sight and reach of children
  • Do not use after the expiry date printed on the bottle
  • Do not dispose of medicines via wastewater or household waste — return unused medicine to your pharmacy

If you're looking to support your overall digestive health alongside managing reflux, it's worth exploring our vitamins and supplements collection for options that may complement your routine.

Written and reviewed by our qualified team

Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy Gaviscon Peppermint Liquid 600ml online in the UK?

You can buy Gaviscon Peppermint Liquid 600ml directly from Cured Pharmacy, a GPhC-registered UK online pharmacy, for £10.99. It is available without a prescription as an over-the-counter medicine. Simply add it to your basket and it will be dispatched to your door.

How does Gaviscon Peppermint Liquid work in the body?

Gaviscon Peppermint Liquid works by forming a thick alginate raft on top of stomach contents, which physically prevents stomach acid from rising into the oesophagus. This is different from antacids that simply neutralise acid — the raft acts as a mechanical barrier. The effect typically begins within a few minutes of taking the dose.

How do I use Gaviscon Peppermint Liquid step by step?

Shake the bottle well before each use, then measure 10–20ml using the measuring cup provided. Take the suspension after meals and at bedtime, swallowing it directly without diluting with water. Do not take more than four doses in any 24-hour period.

What is the correct dose of Gaviscon Peppermint Liquid for adults?

Adults and children aged 12 and over should take 10–20ml after meals and at bedtime, up to a maximum of four times daily. This means the maximum daily dose is 80ml. Always use the measuring cup provided to ensure accuracy.

When is the best time to take Gaviscon Peppermint Liquid?

The best time to take Gaviscon Peppermint Liquid is after meals and at bedtime, as this is when acid reflux and heartburn are most likely to occur. Taking it after eating allows the alginate raft to form on top of the stomach contents effectively. The bedtime dose is particularly helpful for those who experience night-time reflux symptoms.

What are the side effects of Gaviscon Peppermint Liquid?

Side effects are uncommon but may include bloating, flatulence, nausea, or mild stomach discomfort. Allergic reactions are rare but serious — if you notice swelling, a rash, or difficulty breathing, stop taking it and seek immediate medical help. Most people tolerate Gaviscon Peppermint Liquid very well.

Who should not take Gaviscon Peppermint Liquid?

This suspension is not suitable for children under 12 without medical supervision, people with a known allergy to any of its ingredients, or those on a strict sodium-restricted diet. People with significant kidney impairment should also seek medical advice before use. Always check with your pharmacist if you are unsure.

Can I take Gaviscon Peppermint Liquid during pregnancy?

Gaviscon is generally considered one of the first-line options for heartburn relief during pregnancy, and the NHS acknowledges its use in this context. However, you should always speak to your midwife, GP, or pharmacist before taking any medicine while pregnant. The sodium content is worth discussing if you have been advised to limit salt intake during pregnancy.

How long can I use Gaviscon Peppermint Liquid for?

Gaviscon Peppermint Liquid is intended for short-term use to manage occasional heartburn and acid reflux symptoms. If your symptoms persist for more than 7 days, worsen, or are accompanied by other symptoms such as difficulty swallowing or unexplained weight loss, you should consult your GP. Persistent reflux may require further investigation and a different treatment approach.

What happens if I miss a dose of Gaviscon Peppermint Liquid?

If you miss a dose, simply take it as soon as you remember — unless it is nearly time for your next dose, in which case skip the missed one. Do not double up doses to make up for a missed one. Gaviscon is taken as needed for symptom relief rather than on a strict schedule, so missing an occasional dose is unlikely to cause problems.

Can Gaviscon Peppermint Liquid interact with other medicines?

Yes — Gaviscon can reduce the absorption of some medicines if taken at the same time, including certain antibiotics, thyroid medicines, and bisphosphonates. It is recommended to leave at least a 2-hour gap between taking Gaviscon and any other oral medicines. Always inform your pharmacist of all medicines you are taking, including over-the-counter products.

What are the alternatives to Gaviscon Peppermint Liquid for heartburn?

Alternatives include other alginate-based products such as Gaviscon Advance, as well as antacids containing calcium carbonate or magnesium trisilicate. Proton pump inhibitors (PPIs) such as omeprazole are available for more frequent or persistent symptoms, though these require a different mechanism of action. You can explore a range of options in our indigestion collection.

Is Gaviscon Peppermint Liquid suitable for people with high blood pressure?

Gaviscon Peppermint Liquid contains sodium, which may be a concern for people managing high blood pressure or those on a sodium-restricted diet. If you have been advised to limit your sodium intake, Gaviscon Advance (which has a lower sodium content) may be a more suitable option. Speak to your pharmacist or GP before use if you have cardiovascular concerns.

What are the latest findings on alginate-based treatments for acid reflux?

Clinical evidence continues to support alginate-based formulations as effective first-line treatments for mild to moderate gastro-oesophageal reflux disease (GORD). Studies published in peer-reviewed journals have shown that alginate rafts can significantly reduce the frequency and severity of reflux episodes compared to placebo. The NHS and NICE both recognise alginate antacids as appropriate options for managing heartburn and reflux symptoms.

Can I take Gaviscon Peppermint Liquid alongside pain relief medicines?

Some pain relief medicines — particularly non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen — can actually worsen heartburn and acid reflux symptoms. If you need pain relief alongside Gaviscon, paracetamol is generally gentler on the stomach. Browse our pain relief collection for suitable options, and always check with your pharmacist if you are unsure about combining medicines.

How Should You Use Gaviscon Peppermint Liquid?

Using Gaviscon Peppermint Liquid correctly is straightforward, but a few simple steps will help you get the most from it. Always shake the bottle well before measuring your dose, as the suspension can settle between uses.

What Is the Correct Dose of Gaviscon Peppermint Liquid?

The dose varies depending on age. Always follow the dosage instructions on the label or as directed by your pharmacist. Never exceed the maximum daily dose stated below.

When Is the Best Time to Use Gaviscon Peppermint Liquid?

Gaviscon Peppermint Liquid works most effectively when taken after meals and at bedtime. This timing allows the alginate raft to form on top of recently consumed food and stomach contents, providing a physical barrier against acid reflux at the times when it is most likely to occur. The bedtime dose is especially useful for people who experience symptoms when lying down overnight.

How Long Can You Use Gaviscon Peppermint Liquid For?

This suspension is designed for short-term relief of occasional heartburn, acid reflux, and indigestion. If your symptoms have not improved after 7 days of use, or if they worsen at any point, stop using the product and consult your GP. Persistent or severe symptoms — particularly if accompanied by difficulty swallowing, unexplained weight loss, or vomiting — should always be assessed by a healthcare professional, as they may indicate an underlying condition that requires further investigation and treatment.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

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What Are the Most Common Side Effects of Gaviscon Peppermint Liquid?

Most people who use Gaviscon Peppermint Liquid do not experience significant side effects. When they do occur, they tend to be mild and short-lived. The most commonly reported effects relate to the digestive system.

  • Bloating or a feeling of fullness
  • Flatulence (wind)
  • Nausea

What Are the Less Common Side Effects of Gaviscon Peppermint Liquid?

Less frequently, some people may notice changes in their bowel habits or mild abdominal discomfort. These effects are generally not serious and often resolve without any specific treatment.

  • Constipation
  • Diarrhoea
  • Mild stomach cramps or discomfort

What Are the Serious Side Effects of Gaviscon Peppermint Liquid?

Serious side effects are rare but can occur. An allergic reaction to any of the ingredients is the most significant risk. If you experience any of the following, stop taking the suspension immediately and seek urgent medical attention.

  • Skin rash, hives, or itching
  • Swelling of the face, lips, tongue, or throat
  • Difficulty breathing or swallowing
  • Sudden dizziness or feeling faint

What Should You Do If You Experience Side Effects of Gaviscon Peppermint Liquid?

For mild side effects such as bloating or nausea, these often settle on their own. Try taking the suspension with a small amount of food if stomach discomfort is an issue, and ensure you are not exceeding the recommended dose. If side effects persist or concern you, speak to your pharmacist — they can advise whether you should continue, reduce your dose, or switch to an alternative product.

You can also report suspected side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk. This helps improve medicine safety information for everyone.

Can Gaviscon Peppermint Liquid Interact With Other Medicines?

Yes — Gaviscon Peppermint Liquid can affect the absorption of other medicines taken at the same time. This is because the alginate raft and antacid components can bind to or alter the environment in which other drugs are absorbed. To minimise this risk, always leave at least a 2-hour gap between taking Gaviscon and any other oral medicines. Medicines particularly susceptible to this interaction include certain antibiotics (such as tetracyclines), thyroid hormone replacement (levothyroxine), and bisphosphonates used for bone health. Always inform your pharmacist of everything you are taking.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

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