Phexin 500

Capsule · GSK
PRESCRIPTION MEDICINE

Phexin 500 is a capsule made by GSK that contains Cephalexin 500 mg. Cephalexin is a antibiotic (cephalosporin): treats skin, throat, ear, bone and urine infections.

Ingredient (salt)Amount
Cephalexin500 mg

What it is used for

Treats skin, throat, ear, bone and urine infections.

How it works

A first-generation cephalosporin for skin, bone, throat and urinary infections.

How to take it

Usually 250 to 500 mg every 6 to 12 hours, with or without food. Finish the full course.

Common side effects

  • Diarrhoea
  • Nausea
  • Indigestion

Get medical help straight away if

  • Severe diarrhoea
  • Allergic reaction

Be careful

Finish the course; caution if allergic to penicillin.

Other medicines and interactions

Caution with penicillin allergy. Can raise metformin levels slightly.

Pregnancy and breastfeeding

Considered safe in pregnancy and breastfeeding.

Same ingredients, different strength or form

Phexin 250

Common questions

What is Phexin 500?

Phexin 500 is a capsule by GSK containing Cephalexin 500 mg.

What is Phexin 500 used for?

Treats skin, throat, ear, bone and urine infections.

How should I take Phexin 500?

Usually 250 to 500 mg every 6 to 12 hours, with or without food. Finish the full course. Always follow the dose your doctor or the pack gives.

What are the side effects of Phexin 500?

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

Does Phexin 500 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 Phexin 500 in pregnancy or while breastfeeding?

Considered safe in pregnancy and breastfeeding.

What are the substitutes for Phexin 500?

We have no other brand with exactly the same composition and strength in our list yet. Ask your pharmacist for an equivalent.

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.