Proton Pump Inhibitor (stomach acid reducer)
Last reviewed July 2026
Who is this for?
Lansoprazole is a medicine that reduces the amount of acid your stomach produces. It works by blocking a tiny pump in the cells of your stomach wall, so less acid is released into your stomach.
Inhibits the H+/K+-ATPase proton pump on gastric parietal cells, blocking the final step of gastric acid secretion and reducing intragastric pH regardless of the stimulus for acid production.
Stomach ulcer, heartburn, acid reflux (when stomach acid flows back up into your throat), ulcer caused by too much pain killer use, excess stomach acid, indigestion
Prescription Required
You need a doctor's prescription to buy this drug.
Explore this drug
If you forget to take your capsule, take it as soon as you remember. But if it is almost time for your next dose, skip the missed one and continue as normal. Do not take two capsules at once to make up for it.
Buy only from licensed pharmacies. Products like Lanzotec and Zapacid should have NAFDAC registration numbers, so check the pack. Do not use lansoprazole for more than 8 weeks without your doctor's approval, as long-term use can cause bone weakness and low magnesium levels. If your stomach symptoms do not improve after 2 weeks, see a doctor; do not just keep taking it hoping it will work.
Lansoprazole can reduce how well some HIV medicines (like atazanavir) work, so inform your doctor if you are on HIV treatment. It can affect how your body handles blood thinners like warfarin, increasing your risk of bleeding. Avoid taking it at the same time as antacids; if you need both, space them at least one hour apart.
Check your specific combination
Is it safe to take Lansoprazole with your other drugs?
Lansoprazole is not recommended during pregnancy or breastfeeding unless your doctor says the benefit is worth the risk. Always consult your doctor first.
Store in a cool, dry place away from direct sunlight and heat. Nigerian weather can be very hot, so avoid leaving it in your car or near windows. Keep it in the original packaging and far away from children.
For information only: not medical advice. Always talk to a doctor or pharmacist before changing your medication.
Names this drug is sold under, especially in Nigerian and West African pharmacies
Tap a brand for packaging, NAFDAC details and authenticity check
Counterfeit Drug Warning
Fake drugs are a serious problem in Nigeria. Always buy from a registered pharmacy. If the packaging looks different from what is described above, do not use it.