Prescription required

Zonamax Es — Side Effects & Warnings

Known side effects of Zonamax Es include Diarrhea Altered liver function test Allergic reaction Anemia (low number of red blood cells). Not everyone experiences these side effects.

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

Common Side Effects

Diarrhea Altered liver function test Allergic reaction Anemia (low number of red blood cells)

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

Pregnancy Safety

Zonamax ES 1000 mg/500 mg Injection is probably safe to use during pregnancy.<br>Animal studies have shown low or no adverse effect on the foetus, however, there are limited human studies. Please consult your doctor.

Alcohol Interaction

Zonamax ES 1000 mg/500 mg Injection may cause symptoms such as flushing, increased heartbeat, nausea, thirst, chest pain and low blood pressure with alcohol (Disulfiram reactions).

Zonamax Es — Safety Summary

Composition: Sulbactam (500mg) + Cefoperazone (1000mg)
Prescription: Required (Rx)
Pregnancy: Zonamax ES 1000 mg/500 mg Injection is probably safe to use during pregnancy.<br>Animal studies have shown low or no adverse effect on the foetus, however, there are limited human studies. Please consult your doctor.
Alcohol: Zonamax ES 1000 mg/500 mg Injection may cause symptoms such as flushing, increased heartbeat, nausea, thirst, chest pain and low blood pressure with alcohol (Disulfiram reactions).

Zonamax Es — 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.