Patient Medicine Information
Why do I need this medicine?
Flucloxacillin is an antibiotic. It is used to treat certain bacterial infections of the ear, nose, throat, lungs, skin, bones, joints or bladder.

Flucloxacillin may be used to treat other conditions as decided by your doctor.
How do I take this medicine?
Take Flucloxacillin exactly as directed by your doctor or according to the instructions on the label. Do not take more or less than instructed by your doctor.

This medicine should be taken on an empty stomach at least half an hour to 1 hour before meals.

Flucloxacillin is available as an oral capsule or oral suspension.

If you are taking oral suspension, shake the bottle well before use to ensure that the liquid is evenly mixed. Use the measuring spoon or cup provided to measure out your prescribed dose.

Flucloxacillin must be taken at regular intervals for it to be effective. Continue to take this medicine even when you feel better. Do not stop taking it unless instructed by the doctor.

Do not skip any doses. You must complete the entire course of antibiotic. If you don't, the infection will not clear completely.
What should I do if I have forgotten to take this medicine?
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and return to your normal dosing schedule.

DO NOT double a dose under any circumstances.

If you often forget to take your medicine, let your doctor and pharmacist know.
When should I not use this medicine?
Alert your doctor if you have a history of allergic reactions (rashes, breathlessness, swollen mouth or eyes) to penicillin antibiotics (e.g. ampicillin, cloxacillin, penicillin V, sultamicillin) and cephalosporin antibiotics (e.g. cefaclor, cefalexin, cefuroxime).

Alert your doctor if you have a history of liver disease associated with Flucloxacillin as this medicine may not be suitable for you.
What should I take note of while taking this medicine?
Inform your doctor if you have kidney or liver disease.

Let your doctor know if you are pregnant or breastfeeding.

If you are taking Flucloxacillin for a long period of time, your doctor may need to monitor your kidney and liver functions regularly.
What side effects could I experience?
Flucloxacillin may cause any of the following side effects: diarrhoea, nausea, vomiting and stomach discomfort.

Some side effects may need immediate medical help. Alert your doctor quickly if you experience any of the following:
  • rashes, breathlessness, swollen mouth or eyes
  • prolonged diarrhoea, stomach cramps, bloody stools
  • yellowing of skin or eyes
  • fever with persistent sore throat or mouth ulcers, unusual bleeding or bruising
  • convulsions
Inform your doctor if any of these side effects do not go away or are severe, or if you experience other side effects.
Can I take this with other medicines?
Inform your doctor and pharmacist if you are taking any of these medicines:
  • medicines for gout e.g. probenecid
  • medicines for cancer e.g. methotrexate
  • warfarin (a blood-thinning medicine)
This list does not include all medicines that may interact with Flucloxacillin.

Inform your doctor if you are currently taking birth-control pills that contain oestrogen. Flucloxacillin may decrease the effectiveness of these pills. You should not stop or start any birth control pills without first informing your doctor. Ask your doctor about using non-hormonal birth control as an alternative while being treated with Flucloxacillin.

Avoid vaccinations during treatment with Flucloxacillin, as this medicine could reduce the effectiveness of vaccines. Do not have any vaccinations without first asking your doctor for advice.

Always notify your doctor and pharmacist if you are taking any other medicines, including herbal tonics such as traditional Chinese medicines, supplements and medicines that you buy without a prescription.
What special dietary instructions should I follow?
Avoid alcohol.
How should I store this medicine?
Store in a cool, dry place away from the reach of children.

Store oral suspension in the refrigerator, between 2-8°C. Do not allow to freeze. If frozen, this medicine will become ineffective and should not be used. Throw away any unused portion 14 days after opening.

Medicines must not be used past the expiry date.
This information is independently developed by MIMS based on flucloxacillin-oral and is provided for your reference only. It is not a replacement for and should only be used in conjunction with full consultation with a licensed healthcare professional, the information provided by your pharmacist and/or the manufacturer of the medication. It may not contain all the available information you require and cannot substitute professional medical care, nor does it take into account all individual circumstances. Although great effort has been made to ensure content accuracy, we shall not be held responsible or liable for any claims or damages arising from the use or misuse of the information contained herein, its contents or omissions, or otherwise. Copyright © 2022 MIMS. All rights reserved. Powered by MIMS.com
  • Flucloxil
Register or sign in to continue
Asia's one-stop resource for medical news, clinical reference and education
Sign up for free
Already a member? Sign in