Heartburn and Reflux: What to Take and When to Get Help

If the burning turns up now and then, after a particular meal, what you need is something fast-acting: an antacid or an alginate, taken just as the discomfort appears. If it comes back several days a week, what helps is reducing acid production for a while, and that is where famotidine or 20 mg omeprazole come in. In both cases there is a time limit: if you’re no better within the period the leaflet gives, it’s time to get advice, not to buy another box.

That distinction between “putting out the fire” and “turning down production” is what decides which of the three families suits you, and it also explains why so many people have spent months taking something never intended for that use.

What’s happening in there

Reflux is stomach contents rising into the oesophagus. Between the two sits a muscular ring, the lower oesophageal sphincter, which should stay closed except when you swallow. When it relaxes at the wrong moment, acid comes up. The oesophagus doesn’t have the armoured lining the stomach does, so it feels it: that is heartburn, the burning that rises from the top of the stomach towards the throat. If a sour taste also reaches your mouth, that is acid regurgitation.

The occasional episode is normal. When episodes repeat or cause complications over time, it is called gastro-oesophageal reflux disease (GORD), and that is no longer self-care territory: it is a medical diagnosis.

The three families, and what each does

Family	Examples	When it fits	How fast	Limit without advice
Antacids and alginates	Sodium alginate + bicarbonate + calcium carbonate	One-off burning after a specific meal	Minutes	7 days
H2 antagonists	Famotidine 10 mg	Predictable burning: you know which meal triggers it	Under an hour	7 days
Proton pump inhibitors	Omeprazole 20 mg	Repeated reflux symptoms	2-3 days in a row	14 days

Antacids neutralise the acid that is already there. Alginates add something different: they form a floating barrier over the stomach contents that makes it harder for them to rise. They act fast and wear off fast. The NIDDK is explicit that they are for mild symptoms and should not be used daily, or for severe symptoms, without talking to a doctor first.

H2 antagonists and proton pump inhibitors (PPIs) don’t neutralise: they reduce the amount of acid the stomach makes. PPIs do it more completely and are more effective than H2 antagonists for reflux symptoms, but they also take longer to be felt.

How each one is taken, per the official information

Sodium alginate with bicarbonate and calcium carbonate. In adults and over-12s, 1 to 2 sachets as needed, one hour after meals and at bedtime, up to a maximum of 8 sachets a day. That “one hour after” isn’t a detail: it takes advantage of the moment when there are contents in the stomach for the barrier to form on. If symptoms persist after 7 days of continuous treatment, get advice.

Two warnings that usually go unnoticed: it contains a fair amount of sodium — 285.2 mg per 2 sachets, 14.3% of an adult’s recommended maximum daily intake — which matters if you are on a low-salt diet; and it shouldn’t be taken with milk or dairy in quantity, because the calcium can accumulate.

Famotidine 10 mg. One tablet when symptoms appear, or one tablet an hour before the meal you know will bring them on. Maximum 2 tablets a day, and treatment shouldn’t run beyond a week. Not for under-16s.

Omeprazole 20 mg (the over-the-counter presentation). One capsule a day for 14 days, in the morning, swallowed whole with half a glass of water, not chewed or crushed: the granules have a coating that stops acid destroying the active ingredient before it reaches the intestine. You may need to take it for 2 or 3 days in a row before noticing improvement, so don’t write it off on day two. And it shouldn’t be taken for more than 14 days without advice. Nor is it intended as preventive medication “just in case”.

Interactions worth keeping in mind

Heartburn medicines have a habit of interfering with the absorption of other drugs.

• Alginates with calcium and bicarbonate can affect the effectiveness of tetracyclines and quinolones, digoxin, iron salts, thyroid hormones, ketoconazole, beta-blockers and bisphosphonates. The practical rule is to leave 2 hours between them and any other oral medicine.
• Famotidine requires no neutralising antacids until 2 hours afterwards, reduces the effect of iron salts and of posaconazole suspension, and should be taken 2 hours after ketoconazole or itraconazole.
• Omeprazole has a long list: clopidogrel, warfarin and other vitamin K antagonists, phenytoin, digoxin, diazepam, azole antifungals, tacrolimus, high-dose methotrexate, atazanavir and St John’s wort, among others. It is contraindicated with nelfinavir.

If you take long-term medication, this isn’t small print: show the full list at the counter before adding anything.

What changes the picture without a trip to the pharmacy

These measures appear in NIDDK and MedlinePlus recommendations, and in some cases deliver more than the medicine:

• Raise the head of the bed. Not with pillows — raising only your head may do nothing at all — but by lifting the head of the bed frame on blocks, 10 to 20 cm, or using a wedge that tilts the whole upper body.
• Eat your evening meal 2 or 3 hours before lying down. Going to bed on a full stomach hands reflux the ideal position.
• Lose weight if you are overweight or obese.
• Stop smoking.
• Identify your own triggers rather than cutting out foods blindly. Alcohol, caffeine and chocolate come up often, but the pattern is personal: keep a week’s record and you’ll see yours.

The underlying error: making it a habit

The critical point in all of this is time. These medicines reduce or neutralise acid, and in doing so they can mask the symptoms of something else. The omeprazole leaflet says exactly that. Burning you’ve been putting out every night for four weeks with whatever is in the drawer isn’t treated heartburn: it’s an undiagnosed symptom.

That is why the periods in the leaflet — 7 days for antacids and famotidine, 14 for omeprazole — aren’t a legal formality. They are the point at which improvising has to stop.

When to see a doctor

Ask for a medical assessment, and stop self-treating, if:

• You have difficulty or pain swallowing, or a feeling that food is sticking.
• You are losing weight without explanation.
• You vomit blood or something resembling coffee grounds, or start vomiting your food.
• Your stools are black or tarry.
• You have chest pain or breathlessness. With crushing chest pain, sweating, or pain radiating to the arm or jaw, the priority is ruling out a heart problem: call 112, the emergency number across Spain and the EU.
• You are over 55 and the symptoms are new or have recently changed.
• You have had 4 weeks or more of continuous heartburn or indigestion, or of continuously treating it.
• Symptoms don’t improve after 7 days with an antacid or famotidine, or after 14 days with omeprazole.
• You have a history of gastric ulcer or digestive surgery, serious liver disease or kidney problems.
• Severe or persistent diarrhoea appears during omeprazole treatment.
• You are pregnant or breastfeeding: don’t start anything on your own.

This information is general and does not replace assessment by a healthcare professional. Sources consulted: AEMPS/CIMA — Patient leaflet, Omeprazol stadapharm 20 mg gastro-resistant capsules (in Spanish), AEMPS/CIMA — Patient leaflet, omeprazol cinfa 20 mg gastro-resistant capsules (in Spanish), AEMPS/CIMA — Patient leaflet, Gaviscon oral suspension sachets (in Spanish), AEMPS/CIMA — Patient leaflet, Pepcid 10 mg film-coated tablets (famotidine, in Spanish), NIDDK (NIH) — Treatment for GER and GERD and MedlinePlus (NIH) — Gastroesophageal reflux, discharge.