What should you know about OTC for heartburn?

Antacids neutralise acid already in the stomach and may act quickly. Alginates can form a floating barrier that reduces reflux into the food pipe. Some products reduce acid production and may last longer, but they are not suitable for every person or every pattern of symptoms.

Heartburn is a burning feeling behind the breastbone. It can occur with acid reflux, but similar discomfort may also have another cause. Read about [Heartburn](/symptoms/heartburn/) and [Acid Reflux](/conditions/acid-reflux/) to compare symptoms.

Read the label, follow its directions, and check whether the product should be taken with food or separated from other medicines. Antacids can affect absorption of some tablets. A pharmacist can review your medicines, pregnancy status, kidney health, and other conditions before you choose a product.

Smaller meals, avoiding food close to bedtime, and raising the head end of the bed may reduce night symptoms. Keep a note of triggers such as large meals, alcohol, or spicy food rather than removing many foods without a clear reason.

Arrange medical advice if heartburn keeps returning, does not settle with label-directed use, or is affecting sleep or eating. Seek urgent help for chest pressure, breathlessness, fainting, sweating, vomiting blood, black stools, or trouble swallowing. These features should not be assumed to be simple heartburn.

Ask which medicine fits your symptoms, how long you should try it, and whether it interacts with your regular tablets. Ask whether recurring symptoms could relate to [Gastritis](/conditions/gastritis/), [Hiatus Hernia](/conditions/hiatus-hernia/), or [Peptic Ulcer](/conditions/peptic-ulcer/).