Omeprazole
System: AllopathyClass: Proton Pump Inhibitor (PPI)Composition: OmeprazolePrescription: Prescription OnlyEssential medicine (NLEM): Yes
Omeprazole was one of the first PPIs and is still widely used for acidity, GERD and ulcers.
Common brands
- Omez
Dosage forms
- Capsule
- Injection
Uses
- Acidity and GERD
- Peptic ulcer
- H. pylori (with antibiotics)
How it works
Blocks the stomach acid pump.
How to take
Take 30-60 minutes before breakfast.
Common side effects
- Headache
- Diarrhoea
- Nausea
Serious side effects — get medical help
- Low magnesium and B12 with long use
- C. difficile diarrhoea
Who should not take it
- Allergy to PPIs
Interactions
- Clopidogrel (reduces its effect)
- Methotrexate
Pregnancy & breastfeeding
Use if prescribed.
Alcohol & driving
No specific restriction.
Storage
Store below 30°C.
Used for these conditions
Prescribed by
Brands available in India
Frequently asked questions
What is Omeprazole used for?
Acidity and GERD, Peptic ulcer, H. pylori (with antibiotics)
What are the side effects of Omeprazole?
Headache, Diarrhoea, Nausea
How should I take Omeprazole?
Take 30-60 minutes before breakfast.
Who should not take Omeprazole?
Allergy to PPIs
Medically reviewed by
Medical review pending
Last updated
11 October 2026
Sources
- National List of Essential Medicines (NLEM) 2022, MoHFW
- National Formulary of India, Indian Pharmacopoeia Commission
- CDSCO approved drug information
This information is for general awareness and does not replace advice from a qualified doctor. Do not start, stop or change any medicine without medical advice.