Omeprazole

Losec, Omec, Omepralan, Omeprazol · ATC code A02BC01

Also known as: Omeprazol · Brand names: Losec, Omec, Omepralan, Omeprazole Ratiopharm, Antra Mups, Gastrobin Protect, Golamed, Ome Bei Sodbrennen Tad, Ome Tad, Omebeta, Omep, Omepradex, Oppi, Sigrefar, Demeprazol …

Key facts
Active substance
Omeprazole
ATC code
A02BC01
Authorisation
authorised nationally; no central EU authorisation
Information as of
2026-10-27

Key facts

Omeprazole is a proton pump inhibitor that reduces gastric acid secretion. Per the US label it is used for gastric and duodenal ulcers, H. pylori eradication, reflux disease and hypersecretory conditions.

What it is used for

  • Short-term treatment of active duodenal ulcer and active benign gastric ulcer in adults
  • H. pylori eradication with clarithromycin and amoxicillin (or clarithromycin) to reduce the risk of duodenal ulcer recurrence
  • Symptomatic GERD and erosive esophagitis in patients 2 years and older, including maintenance of healing
  • Long-term treatment of pathological hypersecretory conditions (e.g. Zollinger-Ellison syndrome) in adults

Dosing

  • Active duodenal ulcer: 20 mg once daily for 4 weeks
  • Active benign gastric ulcer: 40 mg once daily for 4 to 8 weeks
  • Symptomatic GERD: 20 mg once daily for up to 4 weeks; erosive esophagitis: 20 mg for 4 to 8 weeks
  • H. pylori triple therapy: omeprazole 20 mg, amoxicillin 1000 mg, clarithromycin 500 mg, all twice daily for 10 days
  • Hypersecretory conditions: starting dose 60 mg once daily, adjusted to patient needs
  • Hepatic impairment: 10 mg once daily for maintenance of healing of EE; paediatric dosing in the full text

Contraindications

  • Hypersensitivity to the formulation or any substituted benzimidazole
  • Patients receiving rilpivirine-containing products

Important warnings

  • Symptomatic response does not preclude gastric malignancy
  • Acute tubulointerstitial nephritis; Clostridium difficile-associated diarrhoea
  • Bone fractures with high-dose and long-term therapy; use the lowest dose and shortest duration
  • Vitamin B12 deficiency, hypomagnesaemia, cutaneous and systemic lupus erythematosus, fundic gland polyps with long-term use

Side effects

  • Most common: headache, abdominal pain, nausea, diarrhoea, vomiting and flatulence
  • Also: acid regurgitation, upper respiratory infection, constipation, dizziness, rash

Interactions

  • Clopidogrel: avoid concomitant use (reduced clopidogrel activity)
  • Methotrexate (mainly high-dose): methotrexate levels may be elevated and prolonged
  • Rilpivirine: contraindicated; further interactions (e.g. antiretrovirals) in the full text

Pregnancy and breastfeeding

  • Epidemiologic data do not show an increased risk of major malformations with first-trimester use
  • May be present in human milk; weigh breastfeeding benefits against the mother's need

Summary of the official product information, written with AI (Claude, Anthropic) on 2026-10-28. Every number was checked automatically against the original text. Not reviewed by a physician – the full official text is authoritative.

Full official text →

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For patients

Patient information (US)

Patient information (US) →

Authorisation and brand names by country

Medicines with exactly this active-substance composition, as listed in the national registers – alphabetical and without ranking. Whether a product is currently available is not shown here.

Austria

  • LosecCheplapharm Arzneimittel Gmbh · 1 register entry
  • OmecHexal Pharma Gmbh · 1 register entry
  • OmepralanG.L. Pharma Gmbh · 1 register entry
  • Omeprazol1a Pharma Gmbh, Teva B.V, +pharma Arzneimittel Gmbh, G.L. Pharma Gmbh, Sandoz Gmbh, Stada Arzneimittel Gmbh · 7 register entries
  • Omeprazole RatiopharmTeva B.V · 1 register entry

Source: EMA – Article 57 product data (EU/EEA), as of 2026-10-28

Germany

  • Antra MupsCheplapharm Arzneimittel Gmbh · 1 register entry
  • Gastrobin ProtectCassella-Med Gmbh & Co. Kg · 1 register entry
  • GolamedLaboratorios León Farma, S.A. · 1 register entry
  • Ome Bei Sodbrennen TadTad Pharma Gmbh · 1 register entry
  • Ome TadTad Pharma Gmbh · 1 register entry
  • OmebetaBetapharm Arzneimittel Gmbh · 1 register entry
  • OmepHexal Ag · 3 register entries
  • OmepradexDexcel Pharma Gmbh · 1 register entry
  • Omeprazol1 A Pharma Gmbh, Heumann Pharma Gmbh & Co. Generica Kg, Zentiva Pharma Gmbh, Aliud Pharma Gmbh, Towa Pharmaceutical Europe S.L., Ratiopharm Gmbh, Bluefish Pharmaceuticals Ab, Amarox Pharma Gmbh, Basics Gmbh, Dexcel Pharma Gmbh, Viatris Germany Gmbh, Hennig Arzneimittel Gmbh & Co. Kg, Stada Consumer Health Deutschland Gmbh, Stadapharm Gmbh, Abz-Pharma Gmbh · 26 register entries
  • OppiInfectopharm Arzneimittel Und Consilium Gmbh, De, Heppenheim · 1 register entry
  • SigrefarLaboratorios León Farma, S.A. · 1 register entry

Source: EMA – Article 57 product data (EU/EEA), as of 2026-10-28

Turkey

  • DemeprazolDEVA HOLDİNG A.Ş. · 2 register entries
  • ErbinnaBİEM İLAÇ SAN. VE TİC. A.Ş. · 1 register entry
  • Gastromax EPTRIPHARMA İLAÇ SAN. VE TİC. A.Ş. · 1 register entry
  • LoseprolPHARMADA İLAÇ SAN. VE TİC. A.Ş. · 1 register entry
  • LyomepraTÜM-EKİP İLAÇ A.Ş. · 1 register entry
  • MepraisolAROMA İLAÇ SAN. LTD. ŞTİ. · 1 register entry
  • OletenTEBEM İLAÇ SAN. TUR. VE TİC. A.Ş. · 1 register entry
  • OlmezolKOÇAK FARMA İLAÇ VE KİMYA SAN. A.Ş. · 1 register entry
  • OmefixBİOFARMA İLAÇ SAN. VE TİC. A.Ş. · 1 register entry
  • OmegastULKAR KİMYA SAN. VE TİC. A.Ş. · 1 register entry
  • OmeprazidNOBEL İLAÇ SAN. VE TİC. A.Ş. · 1 register entry
  • OmeprefulPOLİFARMA İLAÇ SAN. VE TİC. A.Ş. · 1 register entry
Show all 20 brand names
  • OmeprolSANDOZ İLAÇ SAN. VE TİC. A.Ş. · 3 register entries
  • OmerefVEM İLAÇ SAN. VE TİC. A.Ş. · 1 register entry
  • OmesekTERRA İLAÇ VE KİMYA SAN. TİC. A.Ş. · 2 register entries
  • OmexCENTURİON İLAÇ SAN. VE TİC. A.Ş. · 1 register entry
  • OmhealWORLD MEDICINE İLAÇ SAN. VE TİC. A.Ş. · 5 register entries
  • OmizolHAVER TRAKYA İLAÇ SAN. VE TİC. A.Ş. · 1 register entry
  • PomeronADİLNA İLAÇ SAN. VE TİC. A.Ş. · 1 register entry
  • ZolasitMENARİNİ SAĞLIK VE İLAÇ SAN. TİC. A.Ş. · 1 register entry

Source: TİTCK – Ruhsatlı Beşeri Tıbbi Ürünler Listesi, as of 2026-10-16

Brand names in 27 more European countries
Belgium
Acidcare, Lappoxo, Losec-Mups, Nexocet, Omeprazol Ab, Omeprazol Aurobindo, Omeprazol Sandoz, Omeprazol Teva, Omeprazol Viatris, Omeprazole Ab, Omeprazole Aurobindo, Omeprazole Eg, Omeprazole Liconsa, Sedacid
Bulgaria
Probitor, Биопразол, Гастроцид, Лапоксо, Омепразид, Омепразол Алуфарма, Омепразол Генерикон, Омепразол Полфарма, Омепразол Ромфарм, Омепразол Сандоз, Омепразол Фарма, Пробитор, Сопрал, Улкопрол, Ултоп, Хелицид
Croatia
Lappoxo, Ortalox, Ortanol, Target Plus, Ultop
Cyprus
Ezipol, Medoprazole, Ompranyt, Penrazol
Czechia
Helicid, Lappoxo, Omeprazol, Omeprazole Galmed, Omeprazole Olikla, Omeprazole Teva Pharma, Ortanol, Relumo, Ultop
Denmark
Lappoxo, Losec, Omeprazol Amarox, Omeprazol Medical Valley, Omeprazol Sandoz, Omeprazol Viatris, Omeprazole Pakningsstørrelser ≤, Omestad, Pedippi
Estonia
Gasec Gastrocaps, Lappoxo, Omep, Omeprazole Olpha, Omeprazole Ratiopharm, Omeprazole Stada, Omeprazole Zentiva, Ultop
Finland
Losec, Omeprazol Ratiopharm, Omeprazol Sanoswiss, Omestad, Pedippi, Zemograc
France
Arpemix, Mopral, Mopralpro, Nexocet, Omeprazole Almus, Omeprazole Arrow, Omeprazole Biogaran, Omeprazole Cristers, Omeprazole Eg, Omeprazole Ethypharm, Omeprazole Evolugen Pharma, Omeprazole Krka, Omeprazole Liconsa, Omeprazole Noridem, Omeprazole Sandoz, Omeprazole Teva, Omeprazole Towa, Omeprazole Viatris, Omeprazole Zentiva, Omeprazole Zydus France, Oméprazole Arrow Lab, Zoltum
Greece
Alevior, Assoprol, Belifax, Benzol, Candazol, Comoprazol, Efrozin, Elcontrol, Elcozek®, Elibactin, Elkomed, Elkotheran, Energoprazol, Eselan, Esopraz, Europrazol, Ezipol, Flusal, Gastronorm, Gerxus, Glaveral, Lanex, Lappoxo, Lexigor, Lodrec, Loproc, Lordin Caps, Lordin Pd.Sol.Inf, Lordin Ps.Inj.Sol, Losec, Lyopraz, Magenlom, Medoprel, Meprolen, Odasol, Omeprazole Demo, Omeprazole Liconsa, Omeprol, Omerane, Omezalin, Oprazium, Penrazol, Pip-Acid, Rukuz®, Rythmogastryl, Sedacid, Sieral, Sodeprol, Spezato, Ufonitren, Vamac, Veralox, Zolandil, Zolmach
Hungary
Helant, Lappoxo, Losec, Ludea, Omeprazol Hexal, Omeprazol Ratiopharm, Omeprazol Teva, Omeprazole Ratiopharm, Omeprazole Rompharm, Omeprazole Teva, Omewill
Iceland
Omeprazol Actavis, Omeprazol Medical Valley, Omeprazol Sandoz, Omezyl, Pedippi
Ireland
Appizped, Losec Control, Losec Mups, Loseina, Omeprazole, Pedippi
Italy
Anadir, Antra, Cletus, Gastroschoum Reflusso, Ibimezolo, Komezol, Kruxagon, Limnos, Losec, Maricrio, Mepral, Nansen, Omasept, Omeprazen, Omeprazolo Abc, Omeprazolo Almus Pharma, Omeprazolo Alter, Omeprazolo Aristo Pharma, Omeprazolo Aurobindo, Omeprazolo Doc Generici, Omeprazolo Eg Stada, Omeprazolo Fg, Omeprazolo Git, Omeprazolo Hexal A/S, Omeprazolo Hikma, Omeprazolo Liconsa, Omeprazolo Mylan Generics Italia, Omeprazolo Mylan Pharma, Omeprazolo Noridem, Omeprazolo P-Care, Omeprazolo Pensa, Omeprazolo Pharmacare, Omeprazolo Ranbaxy Italia, Omeprazolo Sandoz Bv, Omeprazolo Sandoz Gmbh, Omeprazolo Sos, Omeprazolo Sun, Omeprazolo Tecnigen Italia, Omeprazolo Teva Italia, Omeprazolo Zentiva Italia, Omeprazolo Zentiva Srl, Omolin, Pedippi, Protec, Ulcezol
Latvia
Gasec Gastrocaps, Lappoxo, Lomac, Omeira, Omeprazol Stirol, Omeprazole Inteli, Omeprazole Olpha, Omeprazole Ratiopharm, Omeprazole Sandoz, Omeprazole Stada, Omeprazole Unifarma, Omeprazole Zentiva
Lithuania
Gasec, Lappoxolo, Olezela, Omediprol, Omep, Omeprazol Actavis, Omeprazole Inteli, Omeprazole Nord, Omeprazole Siromed, Omeprazole Stada, Omeprazole Zentiva, Remostar, Ultop, Ulzac
Luxembourg
Losec-Mups, Omeprazol Nt Ratiopharm, Omeprazole Eg, Sedacid
Malta
Losec Control, Losec Mups, Medoprazole, Omeprazole (Generic) Normon, Omeprazole Ibigen Srl, Sopral
Netherlands
Appizmit, Kruidvat Maagzuurremmer, Lappoxo, Loprilin, Losec, Losecosan, Maagzuurremmende Capsules Omeprazol Kruidvat, Maagzuurremmende Omeprazol Etos, Maagzuurremmende Omeprazol Livsane, Maagzuurremmer Omeprazol Cf, Omecat, Omeprazol, Ometremp, Omolin, Pedippi, Prenome
Norway
Lappoxo, Losec Mups, Omeprazol Medical Valley, Omeprazol Pensa, Pedippi, Zemograc
Poland
Agastin, Apteo Med, Bioprazol, Gasec, Goprazol, Helicid, Lappoxo, Losec, Omeboix, Omeprazol Biofarm, Omeprazol Farmax, Omeprazol Medreg, Omeprazole Apteo Med, Omeprazole Genoptim, Omeprazole Noridem, Omeprazole Sandoz, Opral, Ortanol, Polprazol, Prazol, Prenome, Relumo, Sagalix, Ultop, Ventazol
Portugal
Albosan, Gasec, Helant, Lappoxo, Laumart, Losec, Mepraz, Noaxo, Omeboix, Omepra, Omeprazol, Omeprazole, Ometon, Omezolan, Proclor, Proton
Romania
Helant, Lappoxo, Novogast, Omecod, Omedar, Omeprazol, Omeprazole, Omez, Ortanol, Sagalix, Ultop, Ventria
Slovakia
Helicid, Lappoxo, Omemyl, Omeprazol Medreg, Omeprazol Neuraxpharm, Omeprazol Sandoz, Omeprazol Stada, Omeprazole Noridem, Omeprazole Olikla, Omeprazole Zentiva, Oprazole, Pedippi, Tevazol
Slovenia
Lappoxo, Ortanol, Ultop
Spain
Arapride, Aulcer, Belmazol, Dolintol, Gastrimut, Gastromel, Helant, Improzol, Losec, Nuclosina -, Omapren, Omeprazol Almus, Omeprazol Alter, Omeprazol Aurovitas Pharma, Omeprazol Aurovitas Spain, Omeprazol Cinfa, Omeprazol Cinfalab, Omeprazol Cinfamed, Omeprazol Combix, Omeprazol Cuve, Omeprazol Davur, Omeprazol Drug Ab, Omeprazol Farma Tarbis, Omeprazol Farmamabo, Omeprazol Gobens, Omeprazol Healthkern, Omeprazol Hikma, Omeprazol Kern Pharma, Omeprazol Korhispana, Omeprazol Krka, Omeprazol Mabo, Omeprazol Normon, Omeprazol Pensa, Omeprazol Qualigen, Omeprazol Sandoz Care, Omeprazol Sandoz Farmacéutica, Omeprazol Serraclinics, Omeprazol Stada, Omeprazol Stadapharm, Omeprazol Sun, Omeprazol Tarbis, Omeprazol Tecnigen, Omeprazol Teva-Ratio, Omeprazol Viatris, Omeprazol Vir, Omeprazole Noridem, Omeprotect, Omereflux, Parizac, Pensavital, Pepticum, Ulceral, Ulcesep
Sweden
Appizmit, Helicid, Losec, Omeprazol, Omeprazole Liconsa, Omeprazole Net, Omeprazole Teva, Omestad, Omezyl, Pedippi, Sigrefar, Zemograc

EMA – Article 57 product data (EU/EEA), 2026-10-28

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Sources

  1. U.S. Food and Drug Administration. Omeprazole (NorthStar Rx LLC) – Prescribing Information, 2026-03-02. DailyMed (NLM), 2026-10-27. https://dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=40a75dc7-49b7-5c9d-6c5f-d4682ec6922e
  2. EMA – Article 57 product data (EU/EEA), 2026-10-28. https://www.ema.europa.eu/en/human-regulatory-overview/post-authorisation/data-medicines-iso-idmp-standards-post-authorisation/public-data-article-57-database
  3. EMA – Article 57 product data (EU/EEA), 2026-10-28. https://www.ema.europa.eu/en/human-regulatory-overview/post-authorisation/data-medicines-iso-idmp-standards-post-authorisation/public-data-article-57-database
  4. TİTCK – Ruhsatlı Beşeri Tıbbi Ürünler Listesi, 2026-10-16. https://www.titck.gov.tr/dinamikmodul/85

Editorial: Medelix editorial team · last updated 2026-10-27 · How these pages are made · Report an error

Source: U.S. Food and Drug Administration (FDA), prescribing information, via DailyMed (NLM); public domain. Not advertising, not a treatment recommendation. For questions about your own treatment, ask your doctor or pharmacist.