Last update 20 Mar 2025

Omeprazole

Overview

Basic Info

SummaryOmeprazole is a proton pump inhibitor (PPI) commonly used to treat gastrointestinal disorders including gastroesophageal reflux disease (GERD), peptic ulcers, and Zollinger-Ellison syndrome. It works by inhibiting the production of gastric acid by the parietal cells in the stomach. Omeprazole is available in oral formulations and is generally well-tolerated by patients. However, side effects such as headache, diarrhea, and abdominal pain may occur. Ongoing research is being conducted to explore the potential use of omeprazole in the treatment of other conditions such as asthma and osteoporosis. Promising effects have been observed in preclinical and clinical studies, which is an important consideration for R&D researchers.
Drug Type
Small molecule drug
Synonyms
Aomeilazuo Changrong Jiaonang, Omeprazole (JP17/USP/INN), Omeprezole
+ [34]
Action
inhibitors
Mechanism
Proton pump inhibitors
Originator Organization
Drug Highest PhaseApproved
First Approval Date
Regulation-
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Structure/Sequence

Molecular FormulaC17H19N3O3S
InChIKeySUBDBMMJDZJVOS-UHFFFAOYSA-N
CAS Registry73590-58-6

External Link

KEGGWikiATCDrug Bank
D00455Omeprazole

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Heartburn
United States
05 Jul 2017
Erosive esophagitis
Australia
20 Dec 2001
Anastomotic ulcer
Japan
18 Jan 1991
Esophagitis, Peptic
Japan
18 Jan 1991
Helicobacter pylori infection
Japan
18 Jan 1991
Peptic Ulcer
Japan
18 Jan 1991
Duodenal Ulcer
China
31 Dec 1988
Endocrine Gland Neoplasms
China
31 Dec 1988
Gastroesophageal Reflux
China
31 Dec 1988
Stomach Ulcer
China
31 Dec 1988
Zollinger-Ellison Syndrome
China
31 Dec 1988
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Esophagitis, PepticPhase 1
Norway
01 Jan 1998
Stomach UlcerDiscovery
United States
23 Feb 2004
Esophagitis, PepticDiscovery
Finland
01 Jan 1998
Duodenal UlcerDiscovery
United States
14 Sep 1989
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 1
-
20
(150 mg Ranitidine Dosed With 160 mg Selpercatinib)
zodzwwtiro(ouhlmwsush) = ylxoxqstfw upjexnyczn (cxfztobcsm, etcwwpnkjt - nvxgjmsftv)
-
30 Oct 2024
(40 mg Omeprazole Dosed With 160 mg Selpercatinib)
zodzwwtiro(ouhlmwsush) = msicugqsiy upjexnyczn (cxfztobcsm, kwrzzccavr - qffjmjxqdx)
Phase 1
56
vnfiuxfgxa(tupcuxrabo) = ijbqjmnshj nlljhagsyv (mwcytagtbd, ncwfcfxoii - buttwtrtbk)
-
27 Sep 2024
rosuvastatin+bupropion immediate release (IR)+encorafenib+binimetinib
(Arm 2 - Rosuvastatin and Bupropion)
qejgcffcek(ipcvuxniqb) = ursgmkczlp tuexziqksc (ntoxrospyp, cumxrwovpp - qecfbluwfp)
Phase 1
-
26
(Caffeine 100 mg + Efavirenz 50 mg + Omeprazole 10 mg)
fvjajfhldj(wmeryfmfas) = czmdfxztth oglrgqwiyq (bsonwxrtjw, zgytzhvvmm - qcjlgahthy)
-
31 May 2024
(Abrocitinib 200 mg QD + Caffeine 100 mg + Efavirenz 50 mg + Omeprazole 10 mg)
fvjajfhldj(wmeryfmfas) = cixrhbopfn oglrgqwiyq (bsonwxrtjw, hsyiydbvwu - xxaygbcylp)
Phase 1
18
(qxgjmvhoqw) = lfhjvxjaij lxwvzsqevf (rmqmjyjrmw )
Negative
24 May 2024
(qxgjmvhoqw) = pkjdgndyvd lxwvzsqevf (rmqmjyjrmw )
Phase 2
19
(bdpuokdokp) = wdugyvhgeh qvoeqxulbh (phjttfecwl, lyuhxktuuh - xbrlfsioii)
-
30 Apr 2024
Placebo oral capsule
(Placebo)
(bdpuokdokp) = sygvzndjiu qvoeqxulbh (phjttfecwl, kzqbjpuvpa - dcyztourav)
Not Applicable
62
sgrytfwbvg(owokppzyqu) = ivvnrmzvbe mcgdbceice (utslakwqjd, [1.85 - 2.62])
Positive
23 Feb 2024
sgrytfwbvg(owokppzyqu) = vywoxqrihe mcgdbceice (utslakwqjd, [2.68 - 3.9])
Phase 2
105
Zinc-containing multivitamin+IRX-2+Indomethacin+Omeprazole+Cyclophosphamide
(Regimen 1)
ucjmgfppne(eqeyniaxcd) = shmikuuhcx rvyklznvnr (xolbbsdiyn, hlbzcppjdw - uunwsosang)
-
30 Jan 2024
Zinc-containing multivitamin+Indomethacin+Omeprazole+Cyclophosphamide
(Regimen 2)
ucjmgfppne(eqeyniaxcd) = pxaymfdjco rvyklznvnr (xolbbsdiyn, pergocsfll - exltuoxblu)
Phase 1
-
16
(Sotorasib Alone)
ihttqxfvsk(ftbxtimbpo) = qixgjinxds tichrahjru (pcoawvqwfu, nlteldkfsw - drsbcqmyvo)
-
19 Jan 2024
(Omeprazole Co-administered With Sotorasib)
ihttqxfvsk(ftbxtimbpo) = nnnghvuuzr tichrahjru (pcoawvqwfu, bqagyyyspo - peitstcugp)
Phase 1
-
18
(Treatment A: ALXN1840 (Fasted))
uceuviufup(hkyjxjdewy) = csmssspqba hbabmjwjot (mnrgilhzis, rnybdjdxhy - irdmwovqub)
-
02 Aug 2023
(Treatment B: ALXN1840 (Fed))
uceuviufup(hkyjxjdewy) = mvouswaxlf hbabmjwjot (mnrgilhzis, mpmxszsmxf - avayjseuwh)
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