{"ok":true,"entry":{"slug":"lansoprazole","kind":"medication","name":"lansoprazole","aliases":["Prevacid","Zoton"],"brands_sg":[],"class":"proton pump inhibitor","tags":["digestive"],"use_for":"nhs: indigestion, heartburn, reflux and stomach ulcers","use_after":"nhs: usually once a day, first thing in the morning","use_duration":null,"take_with":"nhs: water or juice · at least 30 minutes before a meal","pros":["nhs: relief in 2 to 3 days, full effect up to 4 weeks","nhs: capsules, and tablets that melt in the mouth","nhs: most adults and children can take it"],"cons":["sg register: no lansoprazole product registered in sg","nhs: headache, nausea, diarrhoea, stomach pain, wind","nhs: it may hide problems an endoscopy would find"],"dose_note":"no singapore source exists for this molecule — see verify_notes. the nhs page states \"The usual dose to treat indigestion, acid reflux or stomach ulcers is 15mg to 30mg a day\" and, for zollinger-ellison syndrome, \"The usual starting dose … is 60mg a day. This can be increased up to 180mg a day\" with doses over 120 mg split in two. the us label puts the same ceiling differently: \"Dosages up to 90 mg twice daily have been administered. Daily dose of greater than 120 mg should be administered in divided doses.\" wherever it is prescribed, the prescriber sets the dose.","dosage":null,"ul_status":null,"sg_class":"prescription-only","cautions":["past allergic reaction to lansoprazole (nhs)","liver problems (nhs)","pregnancy, trying to conceive or breastfeeding (nhs)","an endoscopy coming up, or low vitamin b12 (nhs)"],"clashes":[{"src":["nhs_lan_mix"],"note":"nhs: they reduce how much lansoprazole the body takes in; nhs suggests a 2-hour gap","with":"antacids"},{"src":["nhs_lan_mix"],"note":"nhs lists it among medicines to tell the doctor about first","with":"warfarin"},{"src":["nhs_lan_mix"],"note":"nhs lists these among medicines to tell the doctor about first","with":"antifungals such as itraconazole or posaconazole"},{"src":["nhs_lan_mix"],"note":"nhs lists these among medicines to tell the doctor about first","with":"methotrexate, digoxin, tacrolimus and hiv medicines"},{"src":["nhs_lan_mix"],"note":"nhs: it may stop lansoprazole working as well as it should","with":"st john's wort"}],"sources":[{"id":"hsa_register","url":"https://data.gov.sg/datasets/d_767279312753558cbf19d48344577084/view","label":"HSA — Listing of Registered Therapeutic Products (data.gov.sg dataset d_767279312753558cbf19d48344577084); all 5,511 rows cached at /tmp/hsa_all.json and filtered locally (not re-fetched) — ZERO rows contain lansoprazole as an active ingredient, 27 Aug 2026","quote":"no row: searching Activeingredients and Productname for LANSOP / ZOTON / PREVACID returns only DEXILANT DELAYED RELEASE CAPSULE 30mg SIN14485P and 60mg SIN14486P, active ingredient \"Dexlansoprazole\", ATC A02BC06, \"Prescription Only\"","accessed":"2026-08-27"},{"id":"nhs_lan_about","url":"https://www.nhs.uk/medicines/lansoprazole/about-lansoprazole/","label":"NHS medicines A–Z — Lansoprazole (brand name: Zoton FasTabs): about lansoprazole","quote":"Lansoprazole is a medicine that reduces the amount of acid your stomach makes. It's used to treat: indigestion; heartburn and acid reflux; gastro-oesophageal reflux disease (GORD) … also taken to prevent and treat stomach ulcers.","accessed":"2026-08-27"},{"id":"nhs_lan_howto","url":"https://www.nhs.uk/medicines/lansoprazole/how-and-when-to-take-lansoprazole/","label":"NHS medicines A–Z — Lansoprazole: dosage and how to take lansoprazole","quote":"Each dispersible tablet or capsule contains 15mg or 30mg of lansoprazole. The usual dose to treat indigestion, acid reflux or stomach ulcers is 15mg to 30mg a day.","accessed":"2026-08-27"},{"id":"nhs_lan_ze","url":"https://www.nhs.uk/medicines/lansoprazole/how-and-when-to-take-lansoprazole/","label":"NHS medicines A–Z — Lansoprazole: dosage for Zollinger-Ellison syndrome","quote":"The usual starting dose to treat Zollinger-Ellison syndrome is 60mg a day. This can be increased up to 180mg a day, depending on how well it works for you. Doses over 120mg will be split into 2 doses.","accessed":"2026-08-27"},{"id":"nhs_lan_side","url":"https://www.nhs.uk/medicines/lansoprazole/side-effects-of-lansoprazole/","label":"NHS medicines A–Z — Lansoprazole: side effects","quote":"These common side effects of lansoprazole may happen in more than 1 in 100 people … Headaches; Feeling or being sick (nausea or vomiting); Diarrhoea; Stomach pain; Constipation; Farting; Itchy or mild rash; Feeling dizzy or tired","accessed":"2026-08-27"},{"id":"nhs_lan_who","url":"https://www.nhs.uk/medicines/lansoprazole/who-can-and-cannot-take-lansoprazole/","label":"NHS medicines A–Z — Lansoprazole: who can and cannot take lansoprazole","quote":"Most adults and children can take lansoprazole … tell your doctor if you: have ever had an allergic reaction …; have liver problems; are pregnant …; are due to have an endoscopy; have low levels of vitamin B12","accessed":"2026-08-27"},{"id":"nhs_lan_mix","url":"https://www.nhs.uk/medicines/lansoprazole/taking-lansoprazole-with-other-medicines-and-herbal-supplements/","label":"NHS medicines A–Z — Lansoprazole: taking lansoprazole with other medicines and herbal supplements","quote":"Antacids can reduce the amount of lansoprazole that the body takes in … take it at least 2 hours before or after your dose … digoxin; itraconazole or posaconazole; methotrexate; warfarin; tacrolimus … Do not take St John's wort","accessed":"2026-08-27"},{"id":"fda_lan_dose","url":"https://api.fda.gov/drug/label.json?search=openfda.generic_name:%22lansoprazole%22&limit=5","label":"US label for lansoprazole delayed-release capsules (Camber Pharmaceuticals, effective 2020-06-30) via openFDA drug/label.json, Dosage and Administration","quote":"Pathological Hypersecretory Conditions Including Zollinger-Ellison Syndrome 60 mg Once daily … Dosages up to 90 mg twice daily have been administered. Daily dose of greater than 120 mg should be administered in divided doses.","accessed":"2026-08-27"}],"brand_certs":null,"updated_at":"2026-08-29T16:16:23.779398+08:00"},"disclaimer":"kozen-x is not a medical device and does not give medical advice. it lists what published sources have written down. absence of a record is not the same as safe."}