Indigestion & Heartburn: What Your Pharmacist Can Help With

What is the difference between indigestion and heartburn?

Indigestion (also called dyspepsia) and heartburn are two related but distinct conditions that are among the most common digestive complaints seen at pharmacies across the UK. For patients seeking heartburn treatment in Medway, understanding the difference helps ensure the right medicine is chosen first time. Indigestion refers to discomfort or pain felt in the upper abdomen, particularly after eating. It often includes a feeling of fullness, bloating, nausea, and sometimes belching. The discomfort comes from the stomach and surrounding structures and is usually linked to how or what you have eaten.

Heartburn, by contrast, is a burning sensation felt in the chest — typically rising from behind the breastbone towards the throat. It is caused by stomach acid refluxing (flowing backwards) into the oesophagus, irritating its lining. Despite the name, heartburn has nothing to do with the heart. The two conditions frequently occur together: a heavy meal can trigger both upper abdominal discomfort and acid reflux simultaneously. When heartburn happens frequently — more than twice a week over several weeks — it may indicate gastro-oesophageal reflux disease (GORD), a chronic condition that benefits from a more structured treatment plan rather than occasional antacid use. At Medway Pharmacy in Gillingham, our pharmacists can help you identify whether your symptoms are likely to be simple indigestion, heartburn, or something that warrants a GP assessment.

What medicines can a pharmacist recommend for heartburn?

There are three main classes of over-the-counter medicine used to treat indigestion and heartburn, each working in a slightly different way. A pharmacist at Medway Pharmacy can advise which is most appropriate based on your symptoms, how often they occur, and any other medicines you are taking.

Antacids — such as Rennie and Gaviscon Original — work by neutralising stomach acid already present in the stomach. They act quickly, usually within minutes, and are ideal for occasional symptoms that appear after a specific meal or trigger. They do not reduce the amount of acid your stomach produces; they simply buffer it. Antacids are best used as a short-term, as-needed treatment rather than taken daily over a prolonged period.

Alginates — Gaviscon Advance is the most widely used example — contain sodium alginate, which reacts with stomach acid to form a thick gel that floats on the surface of stomach contents. This gel acts as a physical barrier (often called a “raft”), preventing acid from splashing up into the oesophagus. Alginates are particularly effective for reflux-type heartburn and for symptoms that worsen when lying down or bending forward. They are generally preferred over plain antacids when reflux is the main complaint.

H2 blockers — famotidine, available over the counter at pharmacies in Gillingham — reduce the amount of acid the stomach produces by blocking histamine H2 receptors in the stomach lining. They take longer to start working than antacids (typically 30–60 minutes) but provide relief lasting up to 12 hours. H2 blockers are useful when heartburn is predictable — for example, before a large meal or in the evening — and are a good option for people who find antacids insufficient.

Can lifestyle changes help with heartburn and indigestion?

Lifestyle modification is an important and often underestimated part of managing heartburn and indigestion. For many patients in Medway and Gillingham, making a few targeted changes can significantly reduce the frequency and severity of symptoms, sometimes removing the need for regular medication altogether.

Eating smaller, more frequent meals is one of the most effective adjustments. Large meals distend the stomach and increase the likelihood of acid reflux. Certain foods and drinks are well-established triggers: fatty and fried foods, spicy food, citrus fruits and juices, tomato-based products, chocolate, caffeine, and alcohol can all weaken the lower oesophageal sphincter or directly irritate the oesophagus. Identifying and reducing your personal triggers — which may differ from those listed here — is worth keeping a brief food diary for a week or two.

Timing meals sensibly also makes a notable difference. Avoid lying down or going to bed within three hours of eating, as gravity normally helps keep stomach contents down. If night-time heartburn is a persistent problem, raising the head of your bed by 10–20 cm using a wedge or blocks under the bed legs (rather than extra pillows, which can worsen symptoms by bending the stomach) can help. Excess body weight increases abdominal pressure and is a significant risk factor for reflux; even modest weight loss can improve symptoms meaningfully. Smoking weakens the lower oesophageal sphincter and should be stopped where possible. Our team at Medway Pharmacy also offers stop-smoking support if that would be helpful alongside heartburn management.

When should heartburn or indigestion be seen by a GP?

While the vast majority of heartburn and indigestion cases are straightforward and can be managed at a pharmacy in Gillingham, there are specific symptoms — sometimes called red flags — that must be assessed by a GP without delay. Our pharmacists at Medway Pharmacy are trained to identify these warning signs and will always refer you appropriately rather than recommend over-the-counter treatment when it would not be safe to do so.

You should see a GP urgently if you experience any of the following alongside digestive symptoms: difficulty swallowing (dysphagia), particularly if food feels like it is sticking in your throat or chest; unintentional weight loss without dieting; persistent or forceful vomiting; blood in vomit (which may look bright red or resemble coffee grounds); or black, tarry stools, which can indicate bleeding higher up in the gastrointestinal tract. Chest pain that radiates to the jaw, left arm, or between the shoulder blades may indicate a cardiac cause rather than heartburn and should be treated as a medical emergency — call 999 if in doubt.

Even without red flags, you should consult your GP if your symptoms have persisted for more than three to four weeks despite over-the-counter treatment, or if you are over 55 and experiencing new or changed digestive symptoms that have not been previously investigated. Both groups have a higher risk of conditions such as peptic ulcer disease or, in rarer cases, upper gastrointestinal cancer, for which early investigation is important. If you are unsure whether your symptoms need a GP referral, speaking to a pharmacist at Medway Pharmacy is always a good first step.

What if I need something stronger than over-the-counter medicines?

Proton pump inhibitors (PPIs) are the most effective class of medicine for reducing stomach acid and are the standard treatment for GORD, peptic ulcers, and persistent heartburn that does not respond adequately to antacids or H2 blockers. PPIs work by blocking the proton pump in stomach cells that produces acid, reducing output by up to 90%. Common PPIs include omeprazole and lansoprazole, both available on NHS prescription from your GP.

A low-dose version — omeprazole 10mg — is now available over the counter at pharmacies in Gillingham, including Medway Pharmacy, for short-term treatment (up to four weeks) in adults with frequent heartburn. This is a useful option for people who clearly have acid-related symptoms, have already tried antacids and alginates without adequate relief, and have no red flag symptoms. However, OTC omeprazole is not appropriate for everyone: certain other medicines interact with PPIs, and long-term use without medical supervision carries its own risks, including reduced magnesium and B12 absorption.

If your symptoms require more than a short course of OTC omeprazole, or if they keep returning when you stop the medicine, a pharmacist at Medway Pharmacy will advise you to book an appointment with your GP. A GP can prescribe full-strength PPIs, arrange investigations such as a gastroscopy if needed, and manage any underlying condition properly. Self-treating with PPIs over the long term without a clear diagnosis can delay the detection of more serious pathology and is not something our pharmacists would encourage without appropriate medical oversight.