About this information
This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.
Who can take flucloxacillin
Most adults and children can take flucloxacillin.
Who may not be able to take flucloxacillin
Flucloxacillin is not suitable for some people. To make sure it's safe for you, tell your doctor or pharmacist before taking flucloxacillin if you:
- have ever had an allergic reaction to flucloxacillin, any other penicillin type antibiotic or any other medicine
- have liver or kidney problems
- have recently had, or are due to have, any vaccinations
View the original NHS website page ↗. Refreshed 19 August 2026.
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