Gaviscon Dual Action Sachets — dual-action liquid antacid, fast relief for heartburn and acid reflux
💊 Active: Sodium Alginate, Calcium Carbonate, Sodium Bicarbonate ⏱️ Dosage: 1–2 sachets (10–20 ml) after meals and before bed 🍽️ Timing: Take after meals only 📦 Pack: Box of 12 or 24 sachets (10 ml each) ⚡ Benefit: Tear and take — no shaking or measuring 🌡️ Storage: Below 30°C, away from sunlight
Shipping
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What is Gaviscon Dual Action Sachets?
Gaviscon Dual Action Sachets is a dual-action liquid antacid packed into single-dose 10 ml sachets. Sodium Alginate forms a gel raft that blocks acid from refluxing into the oesophagus, while its antacids neutralise stomach acid — easing heartburn within minutes. Tear and take, no shaking or measuring needed. Take after each of 3 meals and at bedtime, 1–2 sachets per dose.
🛒 Box of 12 or 24 sachets · authentic · 24-hour dispatch from Intimo Life — consult a doctor or pharmacist before use.
Product Description
An antacid and alginate reflux treatment, Gaviscon Dual Action Sachets combine two mechanisms in a single travel-friendly dose: Sodium Alginate forms a gel raft that physically blocks acid from refluxing, while Calcium Carbonate and Sodium Bicarbonate neutralise excess acid immediately. Each 10 ml sachet is tear-and-take — no shaking or measuring — making it ideal for professionals and travellers who need relief away from home.
📊 Key facts about acid reflux and gaviscon
Global GERD prevalence 2021: 825.6 million cases (GBD 2021, PMC12283765)
Southeast Asia age-standardised rate: ~5,493 per 100,000 (GBD 2021)
gaviscon significantly reduces the postprandial "acid pocket" (Rohof et al., PMC3612878)
Gaviscon Dual Action Sachets is the same acid-reflux formula as the Gaviscon Dual Action bottle, packed into single-dose 10 ml sachets for easy carrying and on-the-go use.
Mechanism 1 — Alginate Raft: When Gaviscon Dual Action Sachets meets stomach acid, Sodium Alginate reacts instantly, forming a thick gel that floats above stomach contents and blocks acid from refluxing into the oesophagus.
Unlike the bottle, sachets require no shaking — each single-dose sachet is ready to take immediately.
Who is Gaviscon Dual Action Sachets for, and when to use it?
Gaviscon Dual Action Sachets suits anyone with occasional acid reflux or heartburn after meals, especially those who find a liquid bottle inconvenient to carry:
Working professionals — eating lunch or dinner away from home with no room to carry a bottle
Frequent travellers — avoiding glass or plastic bottles that risk spilling in a bag
Occasional heavy meals — parties, dinners, or spicy, oily food that can trigger reflux
If you need Gaviscon Dual Action several times a day at home, the 150 ml bottle may be more practical for measuring multiple doses, or if you prefer not to take a liquid, consider Gaviscon Dual Action chewable tablets, which use the same formula.
How to open and take Gaviscon Dual Action Sachets — no measuring needed
How to take Gaviscon Dual Action Sachets:
Tear along the perforation and squeeze the liquid directly into your mouth — no spoon or measuring cup needed
Adults and children 12+: take 1–2 sachets (10–20 ml) after each of 3 meals and before bed
Maximum: 4 doses per day, up to 2 sachets per dose
Do you need to chase it with water? Not necessarily — swallow directly. A small sip is fine if it feels sticky, but avoid large amounts of water as it dilutes the newly formed gel raft.
The advantage of sachets is a pre-measured dose every time — no need to estimate the amount as you would from a bottle.
How to carry Gaviscon Dual Action Sachets to work or while travelling
Gaviscon sachets are designed to travel more easily than a liquid bottle:
Lightweight and unbreakable — fits in a shirt pocket, wallet, or backpack with no risk of a broken bottle or a loose cap leaking
Under carry-on liquid limits — each sachet holds only 10 ml, well under most airline liquid restrictions, ideal for frequent flyers
Take only what you need — carry just a few sachets for a short trip instead of the whole box
Keep 2–3 sachets in your work bag or suitcase for use after meals away from home that might trigger heartburn.
Side effects and precautions for Gaviscon Dual Action Sachets
Gaviscon Dual Action Sachets has few side effects since it is not absorbed into the bloodstream. Possible effects include bloating and flatulence (from CO₂ released by Sodium Bicarbonate), mild nausea, and constipation with frequent or high-dose use.
Contraindications: known allergy to sodium alginate, sodium bicarbonate, or calcium carbonate; children under 12 years.
Precautions: people on sodium-restricted diets (kidney disease, heart disease, hypertension) should use with caution, and take at least 2 hours apart from other medicines. Do not use for more than 7 consecutive days without consulting a pharmacist.
Storing Gaviscon Dual Action Sachets vs an opened bottle
Sachets are sealed individually, unlike a bottle which must be used within 1–2 months once opened:
Unopened sachets — keep until the expiry date on the box, with no concern about air exposure or contamination
Store below 30°C, away from direct sunlight, and avoid leaving sachets in a hot parked car
Opened but unfinished sachets — not recommended to save for later, as the remaining liquid may degrade quickly; finish the sachet in one go
This makes sachets ideal for infrequent users, since there is no risk of an opened bottle losing potency before it is finished.
How sachets offer better value than the bottle (beyond price)
Compared with the 150 ml bottle, sachets offer advantages unrelated to price:
Consistent dosing — no need to estimate the amount as you would measuring from a bottle, reducing the chance of over- or under-dosing
No waste from an opened bottle — infrequent users risk a bottle expiring before it is finished, while each sachet stays usable until its own expiry
Choose the pack size that fits your use — available in boxes of 12 or 24 sachets
If you use Gaviscon daily at home, the bottle may be more convenient since it covers multiple doses in one container. For occasional or on-the-go use, sachets are the better fit.
Bottle or sachet — which Gaviscon Dual Action format suits you?
Gaviscon Dual Action comes in two formats with the exact same formula — only the packaging and per-dose amount differ:
Gaviscon Dual Action Sachets (this page) — 10 ml per sachet, easy to carry to work or while travelling, tear and take with no measuring
If heartburn mostly strikes at home, the bottle is more convenient. If you need to carry a dose with you, the sachet format suits you better.
Where to buy Gaviscon Dual Action Sachets?
Where to buy Gaviscon Dual Action Sachets?
Order Gaviscon Dual Action Sachets antacid online at Intimo Life. We deliver across Thailand within 1–3 business days. All orders are packed discreetly — no product name printed 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.
Take it right after each of your 3 main meals, or within 20–30 minutes, plus one more sachet before bed. Stomach acid is most active just after eating, so Sodium Alginate forms the thickest, most effective raft then. On an empty stomach, the raft is thinner and less protective.
Yes. If you miss a dose after lunch, take one as soon as you get home or remember. Gaviscon does not need a steady blood level like chronic medications, so a delayed dose is not dangerous. Do not double up to make up for it — stick to the normal 1–2 sachet amount.
Best to avoid it. Sachets are sealed tighter than a bottle, but prolonged heat — like a car parked in the sun — can degrade the medicine faster than normal. Store below 30°C, away from sunlight, rather than in a hot vehicle.
Not recommended. Once torn open, air and moisture reach the remaining liquid, which may become contaminated or less effective before your next dose. Finish the sachet in one go. If 10 ml feels like too much, ask your pharmacist about the right dose for you.
Generally considered safe in pregnancy — Sodium Alginate is not absorbed and does not cross the placenta. NHS UK recommends gaviscon as an option for pregnancy heartburn. As it contains sodium, consult your doctor or pharmacist before long-term use, especially in the first trimester.
Gaviscon Dual Action Sachets works just as fast as the bottle — most people feel relief within 3–5 minutes, since Sodium Alginate reacts with stomach acid instantly without needing to be absorbed. The gel raft stays in the stomach for 2–4 hours before normal digestion breaks it down.
This formula is intended for adults and children aged 12 and over only. Children under 12 should not use the adult formulation. If your child has acid reflux or heartburn, consult a paediatrician or pharmacist for an age-appropriate product.
Yes. Each sachet holds only 10 ml, well under the carry-on liquid limit most airlines enforce (typically 100 ml per container) — far easier than packing a large bottle. Keep a few in your carry-on so you can take a dose right away if symptoms occur.
If you're new to it or only need it occasionally, the 12-sachet box is a good fit since you'll finish it before expiry. The 24-sachet box suits frequent reflux, for use both at home and on the go without reordering often. Both sizes use the exact same formula — only the count differs.
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