Omeprazole

Omeprazole is a proton pump inhibitor (PPI) that reduces stomach acid. It may be prescribed for acid reflux (GORD), stomach or duodenal ulcers, or other conditions where acid reduction is needed, sometimes alongside antibiotics for H. pylori.

Your GP or pharmacist may advise on duration of treatment and review.

PPIs block the proton pump in stomach cells that produces acid. Full effect may take a day or two after starting.

Symptom relief and healing time depend on the underlying problem and other treatments used.

Omeprazole is often taken once daily before food, but follow the instructions on your label or from your pharmacist. Capsules are usually swallowed whole; some formulations allow mixing with water for people who cannot swallow capsules.

Do not crush or chew enteric-coated products unless a pharmacist confirms it is safe for your specific brand.

Common effects can include headache, stomach pain, diarrhoea, constipation, or wind. Most are mild and short-lived.

Read your leaflet for the full list and talk to your pharmacist if something worries you.

Seek urgent advice for severe allergic reactions, persistent severe diarrhoea (which could rarely indicate inflammation of the bowel), or unexplained weight loss or vomiting blood.

Long-term PPI use is sometimes associated with other risks; your prescriber may review need periodically.

If you miss a dose, take it when you remember unless it is almost time for the next dose. Do not double up.

If you take omeprazole intermittently for symptoms, your pharmacist can explain an appropriate pattern.

Omeprazole may not suit everyone; your prescriber considers allergies, liver problems, and interactions with other medicines.

Some symptoms (such as difficulty swallowing or unintended weight loss) need medical assessment rather than long-term self-treatment.

PPIs can affect absorption or levels of some drugs (for example, certain antifungals, antiretrovirals, or clopidogrel in some formulations).

Always check with your pharmacist before starting new medicines or supplements alongside omeprazole.

Many people use PPIs in pregnancy or breastfeeding when needed, but this should be discussed with your GP or midwife.

They can weigh benefits and alternatives for your symptoms.

Routine blood tests are not always required for short courses. Long-term use may prompt periodic review of bone health, B12, or magnesium in some patients at risk.

Your prescriber will advise if monitoring applies to you.

Other PPIs (such as lansoprazole) or H2 blockers may be options. Lifestyle measures and antacids can help some people with mild reflux.

Your GP may suggest stepping down dose or stopping after symptoms improve.