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Gaviscon advance Mint oral suspension 500ml

Gaviscon advance Mint oral suspension 500ml

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  • ✔️ Forms a strong alginate raft to block acid reflux
  • ✔️ Relieves heartburn symptoms after meals and at bedtime
  • ✔️ Lower sodium formula suitable for sodium-conscious adults
  • ✔️ Mint flavour suspension for easy, pleasant administration
  • ✔️ 500ml bottle provides extended supply for ongoing relief

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Is Gaviscon Advance Mint Suspension Right for Your Heartburn?

 

If you've ever felt that burning sensation creeping up your chest after a meal, you'll know how disruptive heartburn can be. Gaviscon Advance mint suspension is a well-established, clinically recognised treatment for heartburn and gastro-oesophageal reflux. Available as a 500 ml oral suspension in a refreshing mint flavour, it offers a practical, easy-to-take option for adults who need reliable symptom relief. You can browse our full range of indigestion treatments if you'd like to compare your options before deciding.

Heartburn affects a significant proportion of the UK population, with the NHS noting that it is one of the most common digestive complaints. Gaviscon Advance is an over-the-counter medicine, meaning you don't need a prescription to purchase it — making it a convenient first-line choice for managing occasional to frequent reflux symptoms.

 

How Does Gaviscon Advance Mint Suspension Work?

 

Unlike antacids that simply neutralise stomach acid, Gaviscon Advance works through a different mechanism entirely. It creates a physical barrier — often called a "raft" — that sits on top of the stomach contents and prevents acid from travelling back up into the oesophagus.

  • Sodium alginate reacts with stomach acid to form a thick, viscous gel.
  • Potassium bicarbonate helps the gel rise to the surface of stomach contents.
  • The resulting raft physically blocks acid reflux from reaching the oesophagus.
  • The raft remains in place for several hours, providing sustained symptom relief.

This raft-forming action is what distinguishes Gaviscon Advance from standard antacid preparations. It doesn't suppress acid production — it simply stops acid from going where it shouldn't.

 

Who Should Use Gaviscon Advance Mint Suspension?

 

This suspension is suitable for a broad range of adults experiencing reflux-related symptoms. It's particularly useful if you find tablets inconvenient or prefer a liquid formulation. That said, it isn't appropriate for everyone.

  • Adults aged 12 and over with heartburn or acid reflux symptoms.
  • People who experience symptoms after meals or when lying down at night.
  • Those who prefer a liquid medicine over tablets or chewable formats.
  • Individuals who have not responded adequately to standard antacids alone.

It is not recommended for children under 12 without medical supervision. If you're also managing other digestive concerns, our IBS and cramps collection may offer additional support products worth exploring.

 

How Does Gaviscon Advance Compare to Standard Gaviscon Liquid?

 

Feature Gaviscon Advance Mint Suspension Gaviscon Original Liquid
Active ingredients Sodium alginate 500 mg/5 ml, Potassium bicarbonate 100 mg/5 ml Sodium alginate 250 mg/5 ml, Sodium bicarbonate 133.5 mg/5 ml, Calcium carbonate 80 mg/5 ml
Raft strength Stronger, longer-lasting raft Standard raft formation
Sodium content per dose Lower (uses potassium bicarbonate) Higher (uses sodium bicarbonate)
Suitable for low-sodium diets More suitable (lower sodium) Less suitable

 

Is Gaviscon Advance Mint Suspension Safe to Store at Home?

 

Yes — storing this product correctly is straightforward. Keep it below 30°C, away from direct sunlight, and do not freeze it. Once opened, use within the period stated on the label. Always keep medicines out of the reach and sight of children. The 500 ml bottle size makes it a practical household option for families managing recurring Gaviscon Advance mint suspension symptoms without repeated trips to the pharmacy.

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 Advance Mint Oral Suspension 500ml specifications
Treatment category Heartburn and acid reflux
Mechanism of action Alginate raft formation — physical barrier against acid reflux
Effective for Heartburn, acid reflux, gastro-oesophageal reflux symptoms
Suitable for Adults and children aged 12 and over
Active ingredients Sodium alginate 500 mg/5 ml, Potassium bicarbonate 100 mg/5 ml
Pack size 500 ml
UK classification General Sale List (GSL)
Drug class Alginate antacid
Preparation Oral suspension
Route of administration Oral

Specifications of Gaviscon Advance Mint Oral Suspension 500ml

 

What Is Gaviscon Advance Mint Suspension and What Is It Used For?

 

Gaviscon Advance Mint Oral Suspension is an alginate-based medicine used to relieve the symptoms of heartburn and acid reflux. It is also used to manage symptoms associated with gastro-oesophageal reflux disease (GORD), including the discomfort caused by stomach acid rising into the oesophagus. The NHS describes heartburn as a burning feeling in the chest, often after eating, and notes that it can be triggered by certain foods, lying down, or being overweight.

The suspension is taken orally after meals and at bedtime. It is not a cure for the underlying cause of reflux — rather, it provides symptomatic relief by forming a protective raft over stomach contents. If you experience persistent or worsening symptoms, always speak to your GP.

 

What Do You Need to Know Before Using Gaviscon Advance Mint Suspension?

 

Before taking this medicine, it's important to check whether it is appropriate for you. Do not take Gaviscon Advance if any of the following apply:

  • You are allergic to sodium alginate, potassium bicarbonate, or any other ingredient in the suspension.
  • You have been told to follow a low-potassium diet.
  • You have severely reduced kidney function (renal impairment).
  • You are under 12 years of age (unless directed by a doctor).

Take care and speak to your pharmacist or GP if you are on a sodium-restricted diet, as this product does contain sodium. Patients with heart failure, hypertension, or oedema should seek medical advice before use.

Drug interactions to be aware of:

  • Gaviscon Advance may reduce the absorption of other oral medicines if taken at the same time.
  • Leave at least 2 hours between taking Gaviscon Advance and other oral medications.
  • Speak to your pharmacist if you take medicines for heart conditions, thyroid disorders, or antibiotics.

 

How Should You Use Gaviscon Advance Mint Suspension?

 

Always use this medicine exactly as described in the patient information leaflet or as directed by your pharmacist. Shake the bottle well before each use.

  1. Shake the bottle thoroughly before measuring your dose.
  2. Use the measuring cup provided to measure the correct volume.
  3. Take the suspension after meals and at bedtime.
  4. Swallow the suspension directly — do not dilute it with water.
  5. Do not exceed the maximum daily dose of 80 ml in 24 hours.
Age Group Dose Frequency Maximum Daily Dose
Adults and children aged 12+ 10–20 ml After meals and at bedtime (up to 4 times daily) 80 ml in 24 hours
Children under 12 Not recommended without medical supervision

If you are also managing nausea alongside your reflux symptoms, our sickness and nausea range may offer complementary options to discuss with your pharmacist.

 

What Are the Possible Side Effects of Gaviscon Advance Mint Suspension?

 

Like all medicines, Gaviscon Advance can cause side effects, although not everyone experiences them. Most people tolerate it well.

Common side effects:

  • Bloating or flatulence
  • Nausea

Less common side effects:

  • Allergic reactions (rash, itching, swelling of the face or throat)
  • Difficulty swallowing
  • Worsening of reflux symptoms in rare cases

Stop taking the medicine and seek immediate medical attention if you experience signs of a serious allergic reaction, including swelling of the lips, tongue, or throat, or difficulty breathing. If you're unsure whether a symptom is related to this medicine, contact your pharmacist or GP.

 

How Should You Store Gaviscon Advance Mint Suspension?

 

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

  • Store below 30°C in a cool, dry place.
  • Do not freeze the suspension.
  • 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 label.
  • Do not dispose of medicines via wastewater or household waste — return unused medicine to your pharmacy.

For those managing multiple digestive health concerns, it's worth exploring our constipation range, as digestive symptoms often occur together and your pharmacist can advise on safe combinations.

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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 Advance Mint Suspension online in the UK?

You can buy Gaviscon Advance Mint Oral Suspension 500ml directly from Cured Pharmacy, a GPhC-registered UK online pharmacy, for just £12.49. 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 Advance Mint Suspension work in the body?

Gaviscon Advance works by forming a thick alginate raft on top of stomach contents after you swallow it. This raft acts as a physical barrier, preventing stomach acid from refluxing back up into the oesophagus. Unlike proton pump inhibitors, it does not reduce acid production — it simply stops acid from going where it causes discomfort.

How do I use Gaviscon Advance Mint Suspension step by step?

Shake the bottle well before each use, then measure 10–20 ml using the measuring cup provided. Take the dose after meals and at bedtime, swallowing it directly without diluting with water. Repeat up to four times daily, but do not exceed 80 ml in any 24-hour period.

What is the correct dose of Gaviscon Advance Mint Suspension for adults?

The recommended adult dose is 10–20 ml taken after meals and at bedtime, up to four times daily. The maximum dose is 80 ml in 24 hours. If you are unsure about the right dose for your situation, speak to your pharmacist before starting treatment.

When is the best time to take Gaviscon Advance Mint Suspension?

The most effective time to take Gaviscon Advance is after meals and at bedtime, as this is when acid reflux is most likely to occur. Taking it after eating means the alginate raft forms on top of recently ingested food, providing the most effective barrier. The bedtime dose is particularly helpful for people who experience night-time reflux or symptoms when lying down.

What are the side effects of Gaviscon Advance Mint Suspension?

Most people tolerate Gaviscon Advance well, but some may experience bloating, flatulence, or nausea. Allergic reactions are rare but can include rash, itching, or swelling of the face and throat — if this happens, stop taking it and seek medical help immediately. Always read the patient information leaflet supplied with the product for a full list of possible side effects.

Can I take Gaviscon Advance Mint Suspension during pregnancy?

Gaviscon Advance is generally considered one of the first-line options for heartburn during pregnancy, and the NHS recommends antacids and alginates as suitable for use in pregnancy. However, you should always speak to your midwife, GP, or pharmacist before taking any medicine while pregnant, as individual circumstances vary. Do not exceed the recommended dose.

Is Gaviscon Advance Mint Suspension suitable for children?

Gaviscon Advance Mint Oral Suspension is not recommended for children under 12 years of age without medical supervision. For younger children with reflux symptoms, a doctor should be consulted to determine the most appropriate treatment. Parents looking for suitable products for younger children can explore our baby and toddler range for age-appropriate options.

What happens if I miss a dose of Gaviscon Advance Mint Suspension?

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 take a double dose to make up for a missed one. Gaviscon Advance is taken as needed for symptom relief, so missing an occasional dose is unlikely to cause any harm.

How long can I use Gaviscon Advance Mint Suspension for?

Gaviscon Advance is suitable for short-term use to manage heartburn and reflux symptoms. If your symptoms persist for more than two weeks despite treatment, you should consult your GP, as ongoing reflux may indicate an underlying condition requiring further investigation. Long-term, unsupervised use is not recommended without medical advice.

What is the difference between Gaviscon Advance and regular Gaviscon?

Gaviscon Advance contains a higher concentration of sodium alginate (500 mg/5 ml versus 250 mg/5 ml in standard Gaviscon) and uses potassium bicarbonate rather than sodium bicarbonate, resulting in a stronger and longer-lasting raft. This makes Gaviscon Advance more suitable for people with more frequent or persistent reflux symptoms. It also has a lower sodium content per dose, which may be relevant for those monitoring their sodium intake.

Can Gaviscon Advance Mint Suspension interact with other medicines?

Yes — Gaviscon Advance can reduce the absorption of other oral medicines if taken at the same time. You should leave at least two hours between taking Gaviscon Advance and any other oral medication. This is particularly important for medicines such as antibiotics, thyroid treatments, and heart medicines. Always inform your pharmacist of all medicines you are taking.

What are the alternatives to Gaviscon Advance Mint Suspension?

Alternatives include standard Gaviscon liquid or tablets, other alginate-based products, and antacids such as those containing calcium carbonate or magnesium hydroxide. For more persistent or severe reflux, a GP may recommend a proton pump inhibitor (PPI) such as omeprazole. You can browse our full indigestion range to compare available options.

Does Gaviscon Advance Mint Suspension contain gluten or allergens?

Gaviscon Advance Mint Oral Suspension does not contain gluten, but it does contain methyl parahydroxybenzoate and propyl parahydroxybenzoate (parabens), which may cause allergic reactions in some individuals. Always check the full ingredients list in the patient information leaflet if you have known allergies or sensitivities. If in doubt, speak to your pharmacist before use.

What are the latest findings on alginate therapy for acid reflux?

Clinical evidence continues to support alginate-based therapies as effective first-line treatments for heartburn and mild-to-moderate gastro-oesophageal reflux. Studies published in peer-reviewed journals have shown that alginate rafts can be as effective as proton pump inhibitors for symptom relief in some patient groups. The NHS and NICE both recognise alginates as appropriate initial management for reflux symptoms before escalating to prescription treatments.

How Should You Use Gaviscon Advance Mint Oral Suspension?

Using Gaviscon Advance correctly makes a real difference to how well it works. Always shake the bottle thoroughly before measuring your dose, as the suspension can settle during storage. Use the measuring cup provided with the pack — do not estimate the dose by eye.

What Is the Correct Dose of Gaviscon Advance Mint Oral Suspension?

The dose varies depending on the severity of your symptoms, but you should never exceed the maximum daily amount. Always follow the guidance in the patient information leaflet or as directed by your pharmacist or GP.

When Is the Best Time to Use Gaviscon Advance Mint Oral Suspension?

Timing matters with this medicine. Taking it after meals means the alginate raft forms on top of recently ingested food, which is when it is most effective at preventing acid from rising. The bedtime dose is especially important for people who experience symptoms when lying down or during the night, as the raft provides a sustained barrier while you sleep.

Avoid taking Gaviscon Advance at the same time as other oral medicines — leave at least two hours between doses to prevent any reduction in absorption of other treatments.

How Long Can You Use Gaviscon Advance Mint Oral Suspension For?

Gaviscon Advance is intended for short-term symptomatic relief. Most people use it as needed when symptoms arise, rather than on a fixed daily schedule. If you find yourself relying on it regularly for more than two weeks, this is a signal to speak to your GP — persistent reflux symptoms can sometimes indicate an underlying condition that warrants further assessment.

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

Customer Reviews

Based on 6 reviews
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J
Joe Murray

Excellent product and very good delivery time

A
Anonymous

The only one that always works

A
Anonymous

Excellent

L
Lorraine Crighton

It really helps with acid reflux.

A
Anonymous

I think for the price its a good buy and o like the peppermint flavour the best and will buy again and recomend it to friends and family.

What Are the Most Common Side Effects of Gaviscon Advance Mint Suspension?

Gaviscon Advance is generally well tolerated, and most people experience no side effects at all. However, as with any medicine, some individuals may notice mild digestive symptoms, particularly when first starting treatment.

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

These effects are usually mild and tend to resolve on their own. If they persist or become bothersome, speak to your pharmacist.

What Are the Less Common Side Effects of Gaviscon Advance Mint Suspension?

Less commonly, some people may experience reactions that are more noticeable or uncomfortable. These are not typical but are worth being aware of before you start using the product.

  • Stomach discomfort or cramping
  • Worsening of reflux symptoms in isolated cases
  • Mild skin reactions such as rash or itching

If any of these occur and do not improve, stop using the suspension and consult your pharmacist or GP for advice.

What Are the Serious Side Effects of Gaviscon Advance Mint Suspension?

Serious side effects are rare but require immediate medical attention. The most significant risk is an allergic reaction (hypersensitivity), which can occur in people sensitive to any of the ingredients, including the parabens used as preservatives.

Signs of a serious allergic reaction include:

  • Swelling of the face, lips, tongue, or throat
  • Difficulty breathing or swallowing
  • Severe skin rash or hives
  • Dizziness or feeling faint

If you experience any of these symptoms, stop taking the medicine immediately and call 999 or go to your nearest A&E department.

What Should You Do If You Experience Side Effects of Gaviscon Advance Mint Suspension?

For mild side effects such as bloating or nausea, try reducing your dose slightly and see if symptoms improve. Make sure you are taking the suspension after food rather than on an empty stomach, as this can sometimes reduce digestive discomfort. If side effects are persistent, unusual, or worrying, always seek advice from a healthcare professional rather than continuing to self-treat.

You can also report suspected side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

Can Gaviscon Advance Mint Suspension Interact With Other Medicines?

Yes — Gaviscon Advance can affect the absorption of other oral medicines if taken simultaneously. This is because the alginate gel can bind to other substances in the gut, reducing how much of another medicine enters your bloodstream. This is particularly relevant for antibiotics, levothyroxine, and certain heart medicines. Always leave at least two hours between taking Gaviscon Advance and any other oral medication, and inform your pharmacist of everything you are currently 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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