Tums vs Pepcid vs Gaviscon: Which One for Which Heartburn?

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Short answer: they are three different kinds of product. Tums is an antacid that neutralises acid already in the stomach; Pepcid (famotidine) is an H2 blocker that reduces how much acid the stomach makes; Gaviscon contains alginate, which forms a layer on top of stomach contents to help stop reflux. Which is better depends on your symptoms and timing. Last reviewed 30 Sep 2026.

Tums vs Pepcid vs Gaviscon at a glance

	Tums	Pepcid (famotidine)	Gaviscon
Type	Antacid (calcium carbonate)	H2 blocker (some versions also contain antacids)	Alginate, usually with an antacid; formulas differ by country
How it works	Neutralises acid that is already there	Decreases the amount of acid the stomach makes (MedlinePlus)	Forms a protective layer that helps stop stomach contents rising
Feels like	Fast, short-lived relief	Slower start; can be taken ahead of a known trigger	Aimed at reflux you can feel coming up, including sour taste and night-time symptoms
Often chosen for	An occasional bad evening	Predictable heartburn, for example after certain meals	Regurgitation and heartburn after meals or at bedtime
Watch for	Can interact with other medicines; check the label	Check with a doctor or pharmacist if you have kidney disease, are pregnant or take other medicines	Some versions carry meaningful sodium; check if you limit salt

This is a general comparison, not dosing advice. Always follow the package label and ask a pharmacist. Product formulas vary by country and change over time.

Pepcid vs Tums: which is better?

Neither is better in general. Tums acts directly on acid that has already been made, so it suits a bad moment. Famotidine works on production, and MedlinePlus notes that to prevent symptoms it is taken 15 to 60 minutes before eating foods or drinking drinks that may cause heartburn (MedlinePlus: famotidine). Some people combine an H2 blocker with an antacid; a pharmacist can tell you whether that suits you and how to space doses.

Gaviscon vs Tums: what is the difference?

Tums reduces acidity. An alginate product such as Gaviscon tries to keep stomach contents from rising in the first place, which is why people with regurgitation or symptoms when lying down often look at alginates. The NHS says antacids and alginates are best taken with food or soon after eating, that they ease symptoms in the short term, will not cure the problem, and should not be taken regularly for long periods (NHS: heartburn and acid reflux). Our best antacids guide and antacids vs H2 blockers vs PPIs explain the categories in more depth.

Can you take Tums and Pepcid together, or Gaviscon with Tums?

They are sometimes used together, and some Pepcid products already contain an antacid, so read the ingredients to avoid doubling up. Antacids can interfere with how other medicines are absorbed, so ask a pharmacist how to space doses, especially if you take regular medication.

See a doctor rather than buying another product if you have heartburn most days, need these products for more than a couple of weeks, or have trouble swallowing, food sticking, unexplained weight loss, repeated vomiting, vomiting blood, black stools or chest pain you cannot explain. The NHS advises seeing a GP if lifestyle changes and pharmacy medicines are not helping or you have heartburn most days.

If you want to work on the causes, not only the symptoms

These products manage symptoms; they do not change why reflux happens. Meal size and timing, weight and your own trigger foods are the levers guidelines emphasise (see our 7-day diet plan). If you prefer a single written program, the Acid Reflux Strategy is a $49 one-time PDF (vendor order page, checked 30 Sep 2026) with a 60-day refund promised through ClickBank. It is not a medicine or a replacement for one, we did not buy it (the publisher gave us free member access, which we read), and its sales letter overstates several medical points. Read our review and claim-by-claim check first.

See the official program page (affiliate link) →

FAQ

Is Pepcid or Tums better for acid reflux?

Neither is better for everyone. Tums is quick and short-acting; Pepcid reduces acid production and can be used ahead of a known trigger. See a doctor if you need either most days.

Is Gaviscon better than Tums?

For reflux you can feel coming up, an alginate such as Gaviscon is often chosen, while Tums suits occasional acidity. Formulas vary, so read the label.

Is Pepcid an antacid?

Not strictly. Famotidine is an H2 blocker (it lowers acid production), although some Pepcid products also contain antacids.

Are these safe in pregnancy?

Do not decide from a label. Ask your midwife, pharmacist or doctor; the NHS says a pharmacist can advise on medicines you can take in pregnancy.

Sources and further reading

Affiliate & medical disclosure: This page contains one affiliate link; we may earn a commission at no extra cost to you. Educational content only, not medical advice and not a recommendation to take any specific medicine. Brand names belong to their owners; we are not affiliated with them. See our affiliate disclosure, medical disclaimer and editorial policy.