How does lansoprazole work?
Lansoprazole blocks an enzyme in the stomach lining that produces acid. By reducing acid levels, it helps prevent irritation and damage to the stomach and oesophagus.
What is lansoprazole used to treat?
Lansoprazole is commonly used for:
- Acid reflux and heartburn (gastroesophageal reflux disease – GERD)
- Stomach and duodenal ulcers
- Indigestion caused by excess stomach acid
- Zollinger-Ellison syndrome (a rare condition that causes excess acid production)
- Preventing ulcers in people taking NSAIDs (such as ibuprofen or naproxen)
Who can take lansoprazole?
Most adults and children over 1 year old can take lansoprazole. It is often prescribed for short-term or long-term management of acid-related conditions.
Who might not be able to take lansoprazole?
Lansoprazole may not be suitable if you:
- Are allergic to lansoprazole or other PPIs (like omeprazole or esomeprazole)
- Have severe liver disease
- Are taking certain medications (such as nelfinavir for HIV, which interacts with lansoprazole)
Can I take lansoprazole if I’m pregnant or breastfeeding?
Lansoprazole is usually safe during pregnancy, but you should always check with your doctor first. It is also generally considered safe to take while breastfeeding.
What if I miss a dose?
If you forget to take a dose, take it as soon as you remember. If it’s nearly time for your next dose, skip the missed one—don’t take two doses at once.
How effective is lansoprazole?
Lansoprazole is highly effective at reducing stomach acid. Most people feel relief within a few days, but it can take up to four weeks for full benefits.
What should I do if I take too much?
Taking too much lansoprazole may cause nausea, dizziness, confusion, or an irregular heartbeat. If you’ve taken more than your prescribed dose, seek medical advice.
What dose of lansoprazole is usually taken?
The usual doses are:
- Acid reflux & heartburn: 15mg to 30mg once daily
- Stomach ulcers: 30mg once daily
- Zollinger-Ellison syndrome: Higher doses as adjusted by your doctor
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What are the side effects of lansoprazole?
Most people tolerate lansoprazole well, but some may experience:
- Headache
- Nausea or vomiting
- Diarrhoea or constipation
- Stomach pain
- Dizziness or tiredness
Long-term use may increase the risk of bone fractures and vitamin B12 deficiency.
How should I take lansoprazole?
Lansoprazole is available as capsules or dissolvable tablets. It should be swallowed whole with water and not crushed or chewed.
When should lansoprazole be taken?
Lansoprazole is best taken in the morning before breakfast. If you’re on a twice-daily dose, take the second dose before dinner.
What are the brand names for lansoprazole?
Lansoprazole is available under brand names such as Zoton FasTab in the UK.
Final thoughts
Lansoprazole is a safe and effective treatment for acid-related conditions. If taken correctly, it can relieve symptoms and help heal the stomach lining. If you have concerns about long-term use or side effects, speak to a doctor or pharmacist.
