Sulbactam

Antibiotic booster
PRESCRIPTION ONLY IN INDIA

Sulbactam is a antibiotic booster found in 2 medicines sold in India, such as Zostum 1.5 g, Magnex 1.5 g. Below: what it is for, how it works, how to take it, side effects, interactions and pregnancy advice.

What it is used for

Protects the main antibiotic from bacteria that would otherwise destroy it.

How it works

A beta-lactamase blocker that protects cephalosporins and penicillins from bacterial enzymes; combined with cefoperazone or ampicillin.

How to take it

Given into a vein or muscle by a health professional, usually in hospital.

Common side effects

  • Diarrhoea
  • Rash

Get medical help straight away if

  • Severe diarrhoea
  • Allergic reaction

Be careful

Given by a health professional.

Other medicines and interactions

As for the partner antibiotic.

Pregnancy and breastfeeding

Used in pregnancy when needed.

Combination medicines that contain Sulbactam (2)

Magnex 1.5 gZostum 1.5 g

Common questions

What is Sulbactam used for?

Protects the main antibiotic from bacteria that would otherwise destroy it.

How does Sulbactam work?

A beta-lactamase blocker that protects cephalosporins and penicillins from bacterial enzymes; combined with cefoperazone or ampicillin.

How should I take Sulbactam?

Given into a vein or muscle by a health professional, usually in hospital.

What are the side effects of Sulbactam?

Common: Diarrhoea, rash. Get help straight away for: Severe diarrhoea, allergic reaction.

Does Sulbactam interact with other medicines?

As for the partner antibiotic.

Is Sulbactam safe in pregnancy and breastfeeding?

Used in pregnancy when needed.

Does Sulbactam need a prescription in India?

Yes. In India it is a prescription (Schedule H) medicine, so a pharmacist should sell it only with a doctor's prescription.

Which brands contain Sulbactam?

Magnex 1.5 g, Zostum 1.5 g.

Sources and further reading

NHS (UK National Health Service) and MedlinePlus (US National Library of Medicine) are free, reviewed medicine guides. Brand names and doses there may differ from India.

Last reviewed 31 October 2026. Written by Satya Babu from standard prescribing information.

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For information only, not medical advice. This page is a plain-language summary written from standard prescribing information and the public guides linked below. Brands sometimes change their formula, so always check the composition printed on the pack. Doses here are typical adult doses; yours may differ. Do not start, stop or change a medicine without your doctor or pharmacist, and keep all medicines away from children. In an emergency, call 112 (India) or your local emergency number.