Flucloxacillin is an antibiotic used to treat bacterial infections, such as ear infections and skin infections including cellulitis. It works by killing or stopping the growth of bacteria (bugs). Flucloxacillin belongs to a group of antibiotics called penicillins. Like all antibiotics, flucloxacillin is not effective against infections caused by viruses. In New Zealand, flucloxacillin is available as capsules and liquid and can be given as an injection in the hospital.
- The dose of flucloxacillin will be different for different people depending on the type of infection and your age.
- Adults: the usual dose is 250 mg or 500 mg three or four times a day.
- Children: the dose for children will depend on their body weight. It is usually given 4 times a day.
- Your doctor will advise you on how long to take flucloxacillin for (usually 5 to 7 days).
- Always take your flucloxacillin exactly as your doctor has told you. The pharmacy label on your medicine will tell you how much to take, how often to take it, and any special instructions.
How to take flucloxacillin
Flucloxacillin is best taken on an empty stomach, one hour before eating food. This is because your body may absorb less flucloxacillin after a meal, making it less effective.
- Capsules: swallow the capsule with a glass of water. Do not chew them.
- Liquid: shake the medicine well. Measure the right amount using an oral syringe or medicine spoon. You can get these from your pharmacy. Do not use a kitchen spoon as it will not give you the right amount.
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