Gaviscon Peppermint — antacid for acid reflux, peppermint flavour
💊 Active: Sodium Alginate, Sodium Bicarbonate, Calcium Carbonate ⏱️ Dosage: 10–20 ml or 1 sachet after meals and at bedtime 🍽️ Timing: Take after meals only; shake bottle before use 📦 Pack: 150 ml bottle / 12- or 24-sachet box (10 ml per sachet) ⚡ Benefit: Original formula, sachet format 🌡️ Storage: Below 30°C; do not refrigerate or freeze
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What is Gaviscon Peppermint?
Gaviscon Peppermint is the original-formula liquid antacid containing Sodium Alginate, Sodium Bicarbonate, and Calcium Carbonate. On contact with stomach acid it forms a gel raft that floats above stomach contents, physically blocking acid from refluxing into the oesophagus. It relieves heartburn and sour regurgitation after meals. Available in bottle or portable sachets. Take after meals and at bedtime.
🛒 150 ml bottle or 12/24-sachet pack · authentic · 24-hour dispatch from Intimo Life — consult a doctor or pharmacist before use.
Product Description
An acid reflux medicine, Gaviscon Peppermint is the original alginate-based formula containing Sodium Alginate, Sodium Bicarbonate, and Calcium Carbonate. On contact with stomach acid, it forms an alginate raft that floats above the stomach contents, creating a physical barrier against reflux — unlike ordinary antacids that only neutralise acid.
📊 Key facts about acid reflux
A 2017 meta-analysis found alginate therapy significantly outperforms placebo and plain antacids for GERD symptom control (Leiman et al., PMC6036656)
Global GERD burden reached 825 million cases in 2021 (GBD 2021, PMC12283765)
The alginate raft can float in the stomach for up to 4 hours per the product SmPC (EMC)
For chronic daily reflux, see PPI options such as Omeprazole GPO
🏭 Manufactured by Reckitt Benckiser Healthcare (UK) Limited, distributed in Thailand via DKSH.
⚠️ People on sodium-restricted diets or with kidney disease should consult a pharmacist before use.
Medically reviewed by
Supatcheree A., Pharmacist | Sources: NHS, EMC SmPC, PubMed PMC
Last reviewed: 2026-07-04
About Gaviscon Peppermint
What is Gaviscon Peppermint?
Gaviscon Peppermint, often called the green Gaviscon, is the original alginate formula in the Gaviscon range, the base formula that Dual Action and Advance later adjusted the ingredient ratio from. Each 10 ml dose contains Sodium Alginate 500 mg, Sodium Bicarbonate 267 mg, and Calcium Carbonate 160 mg (per the EMC SmPC).
Alginate Raft Mechanism: On contact with stomach acid, Sodium Alginate reacts instantly to form a viscous, near-neutral pH gel that floats above stomach contents like a raft, physically blocking acid from refluxing into the oesophagus. Sodium Bicarbonate and Calcium Carbonate simultaneously neutralise existing stomach acid.
Because Gaviscon is not absorbed into the bloodstream, it suits those who prefer a non-systemic option for occasional symptom relief, without affecting liver or kidney function.
What does Gaviscon Peppermint treat?
Gaviscon Peppermint relieves symptoms caused by acid reflux and excess stomach acid, especially after meals:
Heartburn — chest burning after eating, worse when lying flat or bending over
Sour or bitter regurgitation — acid rising into the throat, leaving a bitter taste
Indigestion and bloating — after large, fatty, or fried meals
Pregnancy heartburn — NHS guidance confirms it can be used during pregnancy, following label instructions
Best for occasional acute symptoms after meals or at bedtime, rather than treating the underlying cause of daily chronic reflux, which may need a PPI alongside lifestyle changes.
How to take Gaviscon Peppermint — Dosage
Dosage for adults and children 12+ (NHS):
Bottle: 10–20 ml after meals and at bedtime, up to 4 times daily
Sachet: tear open and take 1 sachet (10 ml) per dose — no shaking or measuring needed, ideal for travel
Shake the bottle well before each use
When should you take Gaviscon — before or after food? Always take it after meals. The alginate raft relies on acid stimulated by food; on an empty stomach the raft forms thinner and less effective. The bedtime dose protects against nocturnal reflux.
Do not use Gaviscon for more than 7 consecutive days without consulting a pharmacist.
Gaviscon Peppermint side effects
Gaviscon is generally well tolerated since it is not absorbed into the bloodstream. Possible side effects include:
Bloating or burping — from CO₂ released when Sodium Bicarbonate reacts with stomach acid
Mild nausea — occasionally, especially at higher doses
Constipation — from Calcium Carbonate with frequent, high-dose use
Gaviscon contains sodium. People managing sodium intake (heart or kidney disease) should tell their pharmacist before use. Stop and seek medical help if signs of allergy — rash or breathing difficulty — occur.
Contraindications and precautions for Gaviscon Peppermint
Contraindications:
Known allergy to sodium alginate, sodium bicarbonate, or calcium carbonate
Children under 12 — use only a paediatric formulation under medical guidance
Precautions:
Pregnancy and breastfeeding — consult a doctor or pharmacist before continued use
Separate from other medicines by at least 2 hours — the raft may slow their absorption
Do not use beyond 7 consecutive days; seek medical care if symptoms persist, or if you have difficulty swallowing or unexplained weight loss
Gaviscon Peppermint vs other acid reflux medicines
Different Gaviscon formulas and acid reflux medicines suit different symptom levels:
Gaviscon Dual Action (pink) — a higher proportion of antacid than green Peppermint, combining immediate acid relief with raft formation; suited to stronger heartburn
Gaviscon Advance (orange) — double-strength alginate with almost no antacid; suited to nighttime symptoms or sodium/calcium-restricted diets
Omeprazole GPO (or Nexium) — a PPI that suppresses acid production at the source; slower onset but all-day control; best for chronic daily reflux
Simple guide: General post-meal heartburn → Gaviscon Peppermint (original formula) | Stronger symptoms → Dual Action | Nighttime or low-sodium needs → Advance | Daily chronic reflux → a PPI
How long does Gaviscon Peppermint last?
Gaviscon is one of the fastest-acting, longest-floating acid reflux treatments in its class:
The gel raft floats for up to 4 hours — per the product SmPC — before being broken down by normal digestion
Compared to PPIs — PPIs such as Nexium or Omeprazole take 1–4 weeks of continuous use for full effect, while Gaviscon works per dose
Redosing — take another dose after 4 hours or with your next meal to re-form the protective raft
Consult a pharmacist if symptoms do not improve or are severe.
How are the different Gaviscon colours different?
Gaviscon comes in several colour-coded formulas that differ mainly in the ratio of alginate to antacid: green (Gaviscon Peppermint) is the original balanced formula. Pink and orange variants adjust that ratio for different symptom levels. Read the full formula breakdown in our article how Gaviscon colours differ.
Where to buy Gaviscon Peppermint?
Where to buy Gaviscon Peppermint?
Order Gaviscon Peppermint, an acid reflux medicine, online at Intimo Life. We deliver across Thailand within 1-3 business days. All orders are packed discreetly with no product name on the outer packaging.
⚠️ Disclaimer
The content in this article is for general educational purposes only. It is not intended to replace professional advice, diagnosis, or treatment from a doctor or pharmacist. If you have any questions about symptoms or medication use, always consult a doctor or pharmacist first.
Gaviscon sachets are simple to use — tear open the tip and squeeze the liquid directly into your mouth, then swallow. No shaking or measuring is needed since each sachet is pre-measured to 10 ml, one full dose. Ideal for taking after meals away from home or at work. Discard after use — unlike the bottle, a sachet cannot be resealed.
Gaviscon is generally considered safe in pregnancy. NHS UK confirms it can be taken while pregnant, following label instructions, and the SmPC cites studies of over 500 pregnant women with no adverse effects, since Sodium Alginate is not absorbed and does not cross the placenta. Still, consult a doctor or pharmacist before continued use, especially in the first trimester.
Gaviscon works quickly — most people feel relief within just a few minutes of taking it, because Sodium Alginate reacts with stomach acid immediately rather than needing to be absorbed like other medicines. If symptoms do not improve within 30 minutes, or are severe, consult a pharmacist.
Skip the missed dose and take the next one at the normal time — do not double up. Gaviscon does not need a steady blood level like chronic medicines, so a delayed dose is not dangerous. Just take the usual 10-20 ml or 1 sachet next time.
No. Gaviscon Peppermint is formulated for adults and children aged 12 and over. Children under 12 should use the paediatric Gaviscon Infant formulation under medical guidance only, since the dosage and ingredients differ from the adult formula.
Gaviscon comes as a 150 ml bottle or in sachets (12 or 24 count). The bottle usually offers a lower cost per dose, suited to regular home use. Sachets are more portable for taking outside the home or at work, at a slightly higher cost per dose. Choose based on your lifestyle.
Once opened, store the bottle below 30°C, away from direct sunlight — never refrigerate or freeze it. If the colour, smell, or texture changes, or sediment fails to dissolve after shaking, stop using it and check the expiry date on the label.
Yes. Gaviscon can be used alongside PPIs such as Omeprazole or Nexium, since the mechanisms differ entirely — Gaviscon relieves acute symptoms with its gel raft while a PPI reduces acid production long-term. Space the two at least 2 hours apart so the raft does not affect absorption of the other medicine.
Gaviscon targets acid reflux specifically — Sodium Alginate forms a gel raft that blocks acid from rising into the oesophagus. A plain antacid (such as a magnesium-based formula) only neutralises stomach acid with no barrier mechanism, so it suits general indigestion better than reflux.
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