Acid Reflux Foods to Avoid (and What to Eat Instead)

A practical UK diet guide to the foods and drinks most likely to trigger heartburn — and the evidence-based swaps that actually help.

Part of the Complete Acid Reflux Guide.

How food triggers acid reflux

Acid reflux happens when stomach contents wash back up through the lower oesophageal sphincter (LOS) — the ring of muscle that normally keeps acid where it belongs. Certain foods trigger reflux in one of three ways: they relax the LOS (fat, chocolate, mint, alcohol), they increase acid production or irritate an already inflamed oesophagus directly (citrus, tomato, spice, coffee), or they slow stomach emptying so there is more pressure pushing upwards for longer (large or fatty meals). For a full overview of the condition itself, see our complete acid reflux guide.

No single food affects everyone the same way. The most useful approach is to know the common culprits below, remove the ones that match your symptoms for two weeks, then reintroduce them one at a time to find your personal pattern.

The main trigger foods (and why they cause heartburn)

Fatty and fried foods

The most consistent trigger in research. Fat both relaxes the LOS and delays stomach emptying, so a fry-up, takeaway pizza, creamy sauce or battered fish keeps pressure on the valve for hours. Swap deep-fried for grilled, baked or air-fried versions of the same foods.

Chocolate

Chocolate combines fat, caffeine and theobromine — all three relax the LOS. Dark chocolate in small amounts after a meal (not on an empty stomach) is tolerated better by some people than a large milk-chocolate bar.

Mint

Peppermint and spearmint relax smooth muscle, including the LOS. This is why “a mint tea to settle the stomach” can backfire for reflux — it helps indigestion-type bloating but often worsens heartburn. Chamomile or ginger tea are better choices.

Citrus fruits and juices

Oranges, grapefruit, lemons and their juices are acidic enough to irritate an oesophagus that is already inflamed. They do not cause reflux so much as make each episode more painful. Melon, banana and pear give you fruit without the burn.

Tomatoes and tomato-based sauces

Tomatoes are naturally acidic, and concentrated forms — passata, pizza sauce, ketchup, curry bases — are the usual problem rather than a few slices in a salad. Try smaller amounts, or swap tomato-based pasta sauces for olive-oil or pesto-based ones (in modest quantities, as pesto is high in fat).

Onion and garlic

Raw onion in particular is a well-documented trigger — it increases the number of reflux episodes and belching in susceptible people. Cooked onion and garlic are usually gentler than raw.

Spicy food

Capsaicin (the heat in chilli) irritates the oesophageal lining directly and can slow stomach emptying. You may not need to give up curry — choosing milder dishes, and avoiding very spicy food late at night, is often enough.

Drinks that make reflux worse

• Coffee — relaxes the LOS and stimulates acid. Sensitivity varies: some people react to one cup, others only to several. Decaf helps some but not all, because compounds other than caffeine are partly responsible.
• Alcohol — relaxes the LOS, stimulates acid, and directly irritates the oesophagus. Wine and beer are reported triggers more often than spirits taken with a low-acid mixer.
• Fizzy drinks — the gas stretches the stomach and forces the valve open with each belch. Cola adds caffeine and acidity on top.
• Fruit juices — orange, grapefruit and pineapple juice concentrate the acidity of the whole fruit into a fast-swallowed glass.

The kindest drinks for reflux are still water (sipped between meals rather than gulped with them), semi-skimmed milk in modest amounts, and non-mint herbal teas such as chamomile or ginger.

Foods that help — or are safe to enjoy

A reflux-friendly diet is not a punishment diet. These foods are consistently well tolerated and some may actively help:

• Oats and wholegrains — low in fat, filling, and help absorb stomach acid. Porridge is one of the best breakfasts for reflux.
• Bananas and melon — low-acid fruits that satisfy a sweet craving without irritating the oesophagus.
• Ginger — has modest evidence for settling the upper gut; try it as tea or grated into cooking.
• Lean proteins — chicken, turkey, white fish, tofu and eggs (boiled or poached rather than fried) are low-fat and rarely trigger symptoms.
• Green vegetables — broccoli, green beans, courgette, spinach and asparagus are naturally low in acid and fat.
• Potatoes, rice and couscous — gentle carbohydrate bases, as long as they are not loaded with butter or cream.
• Yoghurt — low-fat natural yoghurt is soothing for many people, though very high-fat dairy can trigger symptoms.

A reflux-friendly day of eating

Here is what a realistic, non-miserable day looks like when you put the rules above into practice:

Eating habits that matter as much as foods

How you eat often matters more than exactly what you eat:

• Smaller meals, more often — a full stomach presses the valve open. Two moderate courses beat one huge plate.
• The three-hour rule — leave at least three hours between your last meal and lying down. Late eating is one of the strongest predictors of night-time symptoms.
• Eat slowly — fast eating means more swallowed air and more belching, each belch an opportunity for reflux.
• Stay upright after eating — a gentle walk helps; slumping on the sofa does not.
• Watch portion size at trigger meals — a small portion of a “trigger” food eaten slowly is often fine when a large one is not.
• Weight matters — if you carry weight around your middle, even modest weight loss measurably reduces reflux episodes.

Avoid, limit, enjoy: the summary table

When diet isn’t enough

Diet changes help most people with mild, occasional heartburn. But if you are still getting symptoms twice a week or more despite two to four weeks of consistent changes, that pattern suggests gastro-oesophageal reflux disease (GORD), and NICE guidance supports treatment with a proton pump inhibitor (PPI) such as omeprazole or lansoprazole alongside — not instead of — the diet work above.

Treatment from Access Doctor

If diet changes alone are not controlling your symptoms, Access Doctor’s pharmacist independent prescribers can prescribe effective acid reflux treatment following a short online consultation, with discreet delivery to your door.