Nordys-550

Tablet · Micro Labs
PRESCRIPTION MEDICINE

Nordys-550 is a tablet made by Micro Labs that contains Rifaximin 550 mg. Rifaximin is a gut antibiotic: treats travellers' diarrhoea and some gut conditions; helps prevent confusion in liver disease.

Ingredient (salt)Amount
Rifaximin550 mg

What it is used for

Treats travellers' diarrhoea and some gut conditions; helps prevent confusion in liver disease.

How it works

An antibiotic that stays in the gut; used for travellers' diarrhoea, IBS with diarrhoea and to prevent confusion in liver disease.

How to take it

Usually 200 to 550 mg two or three times a day as prescribed.

Common side effects

  • Wind
  • Nausea
  • Bloating

Get medical help straight away if

  • Severe diarrhoea
  • Allergic reaction

Be careful

Acts mainly inside the gut; take as prescribed.

Other medicines and interactions

Can affect warfarin. Ciclosporin raises its level.

Pregnancy and breastfeeding

Avoid in pregnancy; ask about breastfeeding.

Same composition, other brands (9)

Rifagut 550Rifguard 550Rifakem-550Rifaxigress-550Torfix 550Zimigut 550Rixmin-550Rcifax 550Sibofix-550

Ask your doctor or pharmacist before switching brands.

Common questions

What is Nordys-550?

Nordys-550 is a tablet by Micro Labs containing Rifaximin 550 mg.

What is Nordys-550 used for?

Treats travellers' diarrhoea and some gut conditions; helps prevent confusion in liver disease.

How should I take Nordys-550?

Usually 200 to 550 mg two or three times a day as prescribed. Always follow the dose your doctor or the pack gives.

What are the side effects of Nordys-550?

Common side effects include: Wind, nausea, bloating. Get medical help straight away for: Severe diarrhoea, allergic reaction.

Does Nordys-550 need a prescription?

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

Can I take Nordys-550 in pregnancy or while breastfeeding?

Avoid in pregnancy; ask about breastfeeding.

What are the substitutes for Nordys-550?

Brands with the same composition: Rifagut 550, Rifguard 550, Rifakem-550, Rifaxigress-550, Torfix 550, Zimigut 550, Rixmin-550, Rcifax 550, Sibofix-550. Ask your doctor or pharmacist before switching.

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.

Composition checked against pack details from large Indian online pharmacies. Last reviewed 31 October 2026. Written by Satya Babu.

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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.