Gaviscon Advance Liquid Peppermint – 300ml

Description

Gaviscon Advance Liquid Peppermint – 300ml

Gaviscon Advance Liquid Peppermint is an alginate-based medicine used to relieve the symptoms of gastro-oesophageal reflux, including heartburn, acid indigestion, and the discomfort caused by stomach acid rising into the oesophagus (food pipe). It is available in a refreshing peppermint flavour and is suitable for adults and children aged 12 and over.

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How It Works

Gaviscon Advance works differently to traditional antacids. When you swallow it, the sodium alginate and potassium bicarbonate react with the acid in your stomach to form a thick, gel-like raft that floats on top of the stomach contents. This raft acts as a physical barrier, helping to prevent stomach acid from rising back up into the oesophagus and causing the uncomfortable symptoms of reflux and heartburn.

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Directions for Use

Adults and children aged 12 years and over should take 5–10 ml (1–2 teaspoons) after meals and at bedtime, up to four times daily. The liquid should be taken after eating and before going to bed. Do not exceed the recommended dose. Always read the patient information leaflet before use. If you are unsure about the correct dose, speak to your PillSorted pharmacist.

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Active Ingredients

• Sodium alginate 500 mg per 10 ml dose
• Potassium bicarbonate 100 mg per 10 ml dose

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Possible Side Effects

Gaviscon Advance is generally well tolerated. Reported side effects may include:
• Allergic reactions (such as skin rash, itching, or swelling) — rare
• Gastrointestinal discomfort (such as bloating or flatulence) — uncommon
• Changes in sodium or potassium levels with prolonged or excessive use — rare

If you experience any serious side effects, stop taking this medicine and seek medical advice immediately.

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Who Should Not Take This Medicine

• People who are allergic to sodium alginate, potassium bicarbonate, or any other ingredient in this product
• Children under 12 years of age (unless directed by a doctor)
• People on a strictly potassium-restricted diet (due to potassium bicarbonate content)
• People on a strictly sodium-restricted diet should use with caution and seek medical advice, as this product contains sodium
• Those with phenylketonuria should check suitability with their doctor or PillSorted pharmacist

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Interactions

Gaviscon Advance may reduce the absorption of certain medicines if taken at the same time. It is recommended to take other medicines at least 2 hours before or after taking Gaviscon Advance. This is particularly relevant for medicines such as antibiotics (e.g., tetracyclines), thyroid medications, and bisphosphonates. Tell your PillSorted pharmacist or doctor about all medicines you are currently taking, including herbal remedies and supplements.

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Pregnancy and Breastfeeding

Gaviscon Advance is generally considered suitable for use during pregnancy and breastfeeding, as it is not significantly absorbed into the bloodstream. However, due to its sodium and potassium content, it should be used cautiously, particularly in those with conditions requiring restricted intake of these minerals. Speak to your doctor or PillSorted pharmacist before use if you are pregnant, trying to conceive, or breastfeeding.

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Alcohol

There are no known direct interactions between Gaviscon Advance and alcohol. However, alcohol can worsen the symptoms of acid reflux and heartburn, so limiting alcohol consumption is advisable when experiencing these symptoms.

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Driving and Operating Machinery

Gaviscon Advance Liquid Peppermint does not cause drowsiness and is not known to affect your ability to drive or operate machinery. You can take this medicine and continue your normal daily activities as usual.

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Storage

Store below 30°C in a cool, dry place away from direct sunlight. Do not freeze. Once opened, use within 6 months. Keep out of sight and reach of children. Do not use after the expiry date shown on the packaging.

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Important Information

• This product is a medicine. Speak to your doctor or PillSorted pharmacist before taking this product if you have an underlying medical condition or are taking any other medication or complementary therapy.
• If symptoms worsen or persist, contact your doctor.
• If pregnant, trying to conceive or breastfeeding, seek medical advice before use.
• If you suffer from allergies, confirm suitability with your PillSorted pharmacist before use.
• Store out of sight and reach of children.
• Read the enclosed patient information leaflet carefully before use.
• Contact your GP where appropriate.

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Patient Information Leaflet

For the full Patient Information Leaflet (PIL) for this medicine, visit the electronic Medicines Compendium (EMC). For further information about this medicine, visit NHS.uk.

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This content has been medically reviewed and approved by Zeinab Ardeshir (GPhC 2075730), Superintendent Pharmacist at PillSorted (GPhC-registered online pharmacy 9011258). Last reviewed: February 2026.

Weight	300 kg
Dimensions	6.5 × 6.5 × 16.3 cm
Brand	Gaviscon