Prescription requiredAnti-ulcer/Anti-reflux (Gastrointestinal)

Omez 20 Capsule — Side Effects & Warnings

Known side effects of Omez 20 Capsule include Headache,nausea,diarrhoea,abdominal pain,flatulence,constipation,dizziness. Not everyone experiences these side effects.

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated August 2026

Common Side Effects

Headache
nausea
diarrhoea
abdominal pain
flatulence
constipation
dizziness

This is not an exhaustive list. Consult your doctor if you notice any unusual symptoms.

Important Warnings

Schedule H: use under medical supervision. Long-term use may increase risk of vitamin B12 deficiency, low magnesium, bone fractures, and gastrointestinal infections (e.g., C. difficile). May mask symptoms of stomach cancer—seek evaluation for alarm symptoms (unintentional weight loss, persistent vomiting, blood in vomit/stool, difficulty swallowing). Use caution in severe liver disease. If on prolonged therapy, periodic review and lowest effective dose are recommended.

Drug Interactions

Omez 20 Capsule may interact with the following:

Clopidogrel (reduced antiplatelet effect)
warfarin (INR changes)
phenytoin
diazepam
digoxin
methotrexate (high-dose)
atazanavir/nelfinavir (reduced levels)
ketoconazole/itraconazole (reduced absorption)
tacrolimus

Always tell your doctor about all medicines you are taking, including over-the-counter drugs and supplements.

Pregnancy Safety

Consult doctor

Alcohol Interaction

Use with caution (alcohol may worsen acidity/GERD)

Habit Forming

Storage

Store below 25°C in a dry place, protected from moisture and light. Keep in original pack; keep out of reach of children.

Omez 20 Capsule — Safety Summary

Composition: Omeprazole (20mg)
Prescription: Required (Rx)
Pregnancy: Consult doctor
Alcohol: Use with caution (alcohol may worsen acidity/GERD)
Habit forming: No

Omez 20 Capsule — Safety FAQs

What should I do if I experience side effects?

Mild side effects often resolve on their own. If side effects are severe or persistent, stop the medicine and consult your doctor immediately.

Are all listed side effects common?

No. Some side effects are common while others are rare. Not everyone experiences side effects. Consult your doctor if you are concerned.

Can I take this medicine with other drugs?

Some medicines interact with each other. Always inform your doctor about all medicines you are currently taking.

When should I seek emergency help?

Seek immediate medical attention if you experience severe allergic reactions (difficulty breathing, swelling of face/throat), chest pain, or any life-threatening symptoms.

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Safety disclaimer

This information is for educational purposes only and is not a substitute for professional medical advice. If you experience severe side effects, seek medical attention immediately.