{"ok":true,"entry":{"slug":"gaviscon","kind":"medication","name":"gaviscon","aliases":["sodium alginate + sodium bicarbonate + calcium carbonate","Gaviscon Double Action"],"brands_sg":["Gaviscon","Gaviscon Double Action","Gaviscon Advance","Gaviscon Peppermint","Gascovid"],"class":"alginate antacid combination","tags":["digestive"],"use_for":"heartburn (acid reflux) and indigestion","use_after":"after meals and at bedtime · up to 4 times a day (nhs)","use_duration":null,"take_with":"tablets are chewed, not swallowed whole; liquid is measured","pros":["nhs: 'gaviscon is a very safe medicine'","general sale list in sg — all 8 alginate products","nhs: safe to take paracetamol at the same time"],"cons":["nhs: no longer than 7 days without checking a doctor","a 2-hour gap is needed from many other medicines","sodium and calcium content matters on a low-salt diet"],"dose_note":"nhs, for people 12 years and over: '10 to 20ml after meals and at bedtime, up to 4 times a day'; '10ml, four times a day if you're taking Gaviscon Advance'; '2 to 4 tablets, up to 4 times a day'. nhs on duration: 'if you buy Gaviscon without a prescription, do not take it for longer than 7 days without checking with a doctor'. nhs on overdose: 'if you take more than your usual dose … it may cause side effects such as wind and bloating … This is unlikely to cause you any harm'. every sg alginate product is general sale list — as directed on the pack or by your pharmacist.","dosage":null,"ul_status":null,"sg_class":"general-sale","cautions":["advised to eat a low calcium or low salt (low sodium) diet — nhs says check with a doctor or pharmacist first","kidney, liver or heart disease — nhs says check first","phenylketonuria, or low levels of phosphate in the blood — nhs says check first","children under 12 — nhs: only if prescribed or recommended by a doctor; sg packs are general sale list for adults"],"clashes":[{"src":["nhs_gav_interact"],"note":"nhs: do not take gaviscon within 2 hours before or after these — absorption of the other medicine is affected","with":"quinolone and tetracycline antibiotics, iron tablets, antifungals, levothyroxine, bisphosphonates"},{"src":["nhs_gav_interact"],"note":"nhs lists these in the same 2-hour separation rule; speak to a doctor or pharmacist before starting any of them","with":"antihistamines, beta blockers, steroids, antipsychotics, chloroquine, penicillamine, estramustine"},{"src":["nhs_gav_interact","nhs_gav_about"],"note":"nhs: paracetamol is safe at the same time, but other painkillers such as ibuprofen or aspirin can make the symptoms worse","with":"ibuprofen and aspirin"}],"sources":[{"id":"hsa_register","url":"https://data.gov.sg/datasets/d_767279312753558cbf19d48344577084/view","label":"HSA Register of Therapeutic Products (open data, data.gov.sg d_767279312753558cbf19d48344577084) — datastore_search API, 5,511 rows","quote":"GAVISCON LIQUID [SIN09494P] … CALCIUM CARBONATE&&SODIUM ALGINATE&&SODIUM BICARBONATE … General Sale List … GAVISCON DOUBLE ACTION TABLETS … GAVISCON ADVANCE-PEPPERMINT FLAVOUR SUSPENSION … GASCOVID LIQUID … General Sale List","accessed":"2026-08-27"},{"id":"ndf_gaviscon_da","url":"https://www.ndf.gov.sg/about-drugs/product-information/sin14194p/","label":"MOH National Drug Formulary — GAVISCON DOUBLE ACTION TABLETS [SIN14194P] (HSA-registered SG product record, updated 28 July 2026)","quote":"CALCIUM CARBONATE - 187.5 MG SODIUM ALGINATE - 250 MG SODIUM BICARBONATE - 106.5 MG … TABLET, CHEWABLE … GENERAL SALE LIST … RECKITT BENCKISER (SINGAPORE) PTE LTD … ATC code A02BX13","accessed":"2026-08-27"},{"id":"nhs_gav_about","url":"https://www.nhs.uk/medicines/gaviscon/about-gaviscon/","label":"NHS — About Gaviscon (reviewed 23 April 2025)","quote":"Gaviscon can be used to treat heartburn (acid reflux) and indigestion. It works by forming a protective layer on top of the contents of your stomach … You'll usually take Gaviscon after meals and at bedtime … If you buy Gaviscon without a prescription, do not take it for longer than 7 days without checking with a doctor","accessed":"2026-08-27"},{"id":"nhs_gav_how","url":"https://www.nhs.uk/medicines/gaviscon/how-and-when-to-take-gaviscon/","label":"NHS — How and when to take Gaviscon (reviewed 23 April 2025)","quote":"If you are 12 years and over, your dose is: 10 to 20ml after meals and at bedtime, up to 4 times a day; 10ml, four times a day if you're taking Gaviscon Advance; 2 to 4 tablets, up to 4 times a day … If you're taking tablets, chew them and do not swallow them whole. The liquid will come with a plastic spoon to help you measure your dose","accessed":"2026-08-27"},{"id":"nhs_gav_who","url":"https://www.nhs.uk/medicines/gaviscon/who-can-and-cannot-take-gaviscon/","label":"NHS — Who can and cannot take Gaviscon (reviewed 23 April 2025)","quote":"been advised to eat a low calcium or low salt (low sodium) diet … kidney, liver or heart disease … a rare, inherited illness called phenylketonuria … low levels of phosphate in your blood … Gaviscon should only be given to children under 12 years if it's been prescribed or recommended by a doctor","accessed":"2026-08-27"},{"id":"nhs_gav_se","url":"https://www.nhs.uk/medicines/gaviscon/side-effects-of-gaviscon/","label":"NHS — Side effects of Gaviscon (reviewed 23 April 2025)","quote":"Gaviscon is a very safe medicine. Most people who take it do not have any side effects … It's rare, but the ingredients in some types of Gaviscon may be more likely to make you feel sick or cause vomiting, constipation or diarrhoea","accessed":"2026-08-27"},{"id":"nhs_gav_interact","url":"https://www.nhs.uk/medicines/gaviscon/taking-gaviscon-with-other-medicines-and-herbal-supplements/","label":"NHS — Taking Gaviscon with other medicines and herbal supplements (reviewed 23 April 2025)","quote":"Do not take Gaviscon within 2 hours before or after taking: antihistamines; some antibiotics (quinolones and tetracyclines); iron tablets; medicines to treat fungal infections; beta blockers; penicillamine; steroids; antipsychotic medicines; chloroquine; estramustine; bisphosphonates … levothyroxine … It's safe to take paracetamol at the same time as Gaviscon","accessed":"2026-08-27"}],"brand_certs":null,"updated_at":"2026-08-29T16:16:19.87501+08:00"},"disclaimer":"kozen-x is not a medical device and does not give medical advice. it lists what published sources have written down. absence of a record is not the same as safe."}