SHEET /m/omeprazole · PubChem CID 4594 · CAS 73590-58-6 · REV 2026.07
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Omeprazole
from sourceC17H19N3O3S · 345.4 g/mol
Losec · Antra · Audazol · Mopral
Also sold as Prilosec, Zegerid from source
What is Omeprazole?
A proton pump inhibitor that reduces stomach acid production, sold as Prilosec for heartburn and reflux. from source
CategoryOTC medicine
Fig. 1 · 2D structure RDKit
SMILES
CC1=CN=C(C(=C1OC)C)CS(=O)C2=NC3=C(N2)C=C(C=C3)OCWhere you'll find it
Sold over the counter, without a prescription. Sold as Prilosec, Zegerid. See the rest of the otc medicine group.
Relative acute toxicity from source
Animal study data · LD50
- Reported LD50
- 4,000 mg/kg · very low toxicity
- Species
- rat
- Route
- oral
An LD50 describes acute toxicity under experimental conditions and is not a safe or dangerous dose for a person.
Toxicity & hazards
Toxicity · LD50
4,000 mg/kg · very low toxicity · LD50 rat oral from source
3 more reported values
- 4,000 mg/kgLD50 · oral · mouse
- 50 mg/kgLD50 · iv · rat
- 80 mg/kgLD50 · iv · mouse
WarningIrritantH302, H312, H315, H317, H319, H332, H335, H412from source
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