Drug reference
omeprazole
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Drug class
Gastrointestinal Tract (Proton Pump Inhibitors)
Mechanism of action
PPI; binds to H+/K+-exchanging ATPase (proton pump) in gastric parietal cells, resulting in suppression of basal and stimulated acid secretion. Relative Potency: 0.23.
Common side effects
- Headache
- Nausea
- Abdominal pain
- Diarrhea
Known interactions (8)
- clopidogrel + omeprazole Major
- erlotinib + omeprazole Major
- Azithromycin + omeprazole Moderate
- calcium carbonate + omeprazole Moderate
- cisplatin + omeprazole Moderate
- Clarithromycin + omeprazole Moderate
- domperidone + omeprazole Moderate
- omeprazole + warfarin Moderate
Related conditions
Frequently asked questions
What drug class is omeprazole?
omeprazole belongs to: Gastrointestinal Tract.
How does omeprazole work?
PPI; binds to H+/K+-exchanging ATPase (proton pump) in gastric parietal cells, resulting in suppression of basal and stimulated acid secretion. Relative Potency: 0.23.
What are the common side effects of omeprazole?
Headache, Nausea, Abdominal pain, Diarrhea
Which drugs interact with omeprazole?
clopidogrel, erlotinib, Azithromycin, calcium carbonate, cisplatin, Clarithromycin, domperidone, warfarin
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