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About ciprofloxacin Key facts Who can and cannot take ciprofloxacin How and when to take it Side effects How to cope with side effects Pregnancy and breastfeeding Cautions with other medicines Common inquiries

Ciprofloxacin is an antibiotic. It belongs to a group of antibiotics called fluoroquinolones.

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It is used to treat serious infections, or infections when other anitbiotics have not worked.

It's used to treat bacterial infections, such as:

skin and bone infectionsear infections

It can be used to help stop people getting meningitis if they have been really close to someone with the infection.

Ciprofloxacin is only available on prescription.

It comes as tablets, a liquid that you drink, eardrops, eyedrops and an eye ointment. It's also given by injection, but this is usually done in hospital.

Ciprofloxacin tablets and liquid are not used as often as some other types of antibiotics because there's a risk of serious side effects.


2. Key facts


The most common side effects of ciprofloxacin tablets and liquid are feeling sick (nausea) and diarrhoea.Avoid taking the tablets or liquid together with dairy products like milk, cheese and yoghurt.It is rare, but the tablets and liquid can cause weak muscles, pain or tingling in your legs and arms, painful or swollen joints and tendons, and a fast or irregular heartbeat. Contact a doctor immediately if any of these happen to you.Ciprofloxacin is also known by the brand names Ciproxin (tablets and liquid), Ciloxan (eyedrops and eye ointment) and Cetraxal (eardrops).Ciprofloxacin eardrops also come mixed with other medicines, such as dexamethasone (known as Cetraxal Plus) and fluocinolone (known as Cilodex).

3. Who can and cannot take ciprofloxacin


Ciprofloxacin can be taken by most adults and children from the age of 1 year.

Ciprofloxacin is not suitable for some people.

To make sure ciprofloxacin is safe for you, tell your doctor if:

you have had an allergy to ciprofloxacin or any other medicineyou have had a serious side effect with ciprofloxacin or another antibiotic (particularly a fluroquinolone) in the pastyou had diarrhoea when you have taken antibiotics beforeyou have fast, pounding or irregular heartbeatsyou have problems with your tendons

4. How and when to take it


How you take your medicine depends on the type of ciprofloxacin and what you're taking it for. Follow the instructions that come with it.

Try to space the doses evenly throughout the day. Keep taking or using this medicine until the course is finished, unless your doctor tells you to stop.

How to take the tablets and liquid

Ciprofloxacin comes as 250mg, 500mg and 750mg tablets. It also comes as a liquid that contains 250mg in a 5ml spoonful (250mg/5ml).

The usual dose of ciprofloxacin is 250mg to 750mg twice a day. For some infections you might only need to take a single dose.

Doses are usually lower for children and people with kidney problems.

Swallow the tablets whole with lots of water. Do not chew them.

Ciprofloxacin liquid comes as granules that you need to dissolve in the special liquid provided. Follow the instructions that comes with your medicine.

Before taking ciprofloxacin liquid, shake the bottle for 15 seconds to make sure the granules have dissolved.

The liquid comes with a plastic syringe or spoon to help you take the right amount. If you do not have one, ask your pharmcist for one. Do not use a kitchen teaspoon as it will not give the right dose.

You can take ciprofloxacin tablets and liquid with or without food. however, avoid dairy produce like milk, cheese and yoghurt, as they can affect how your medicine works.

How to apply the eyedrops

You'll usually put 1 or 2 drops into the affected eye 4 times a day.

For severe infections, your doctor may tell you to use the drops as often as every 15 minutes for the first 6 hours. You can then reduce how often you use it.

Gently pull down your lower eyelid with a clean finger and tilt your head back.Hold the bottle over your eye and allow a single drop to fall into the space between your lower lid and your eye.Wipe away any extra liquid with a clean tissue.Put in a second drop if you have been told to.

Do not touch your eye or eyelid with the dropper as it may cause infection to spread.

How to use the eye ointment

Put just over 1 centimetre of ointment on the affected eye 2 or 3 times a day, or as your doctor advises. If the infection is severe, your doctor may tell you to use it as often as every hour, and throughout the night.

Gently pull down your lower eyelid with a clean finger and tilt your head back.Hold the tube with the nozzle close to your eye and gently squeeze the ointment into the space between your lower lid and your eye.

Do not touch your eye or eyelid with the nozzle as it may cause infection to spread.

How to use the eardrops

Put up to 5 drops into the affected ear twice a day, or as your doctor advises.

Warm the drops by holding the container in your hands for a few minutes.Tilt your head and bring the container up to the affected ear, with the open end close to your ear hole.Squeeze the drops into your ear.If you can, lie down for at least 5 minutes afterwards.If you are only treating 1 ear, turn your head to one side, so your affected ear is towards the ceiling.

What if I forget to take it?

If you forget a dose, take it as soon as you remember, unless it's nearly time for your next dose. In this case, just skip the missed dose and take your next one as normal.

Make sure you finish your full course of antibiotics. Do not have a double dose to make up for a missed dose.

If you forget doses often, it may help to set an alarm to remind you. You could also ask your pharmacist for advice on other ways to remember your medicines

What if I take or use too much?

If you're using the eye ointment or the eye or eardrops, do not worry if you accidentally use a bit too much. This usually will not cause any problems.

Ciprofloxacin tablets or liquid

If you take more than your dose of the tablets or liquid, you may get side effects. These include feeling or being sick (nausea or vomiting), diarrhoea and a pounding or irregular hearbeat. If you have epilepsy, you might have seizures or fits.


Like all medicines, ciprofloxacin can cause side effects although not everyone gets them.

Common side effects

Common side effects of ciprofloxacin happen in more than 1 in 100 people. Tell your doctor if these side effects bother you or do not go away:

feeling sick (nausea) after taking the tablets or liquiddiarrhoea after taking the tablets or liquidred or uncomfortable eye with a stinging, burning or gritty feeling after using the eyedrops or ointmentbad taste in the mouth with the eyedrops or ointmentwhite specks on the surface of your eye after using the eyedrops or ointment

Serious side effects

Very few people taking or using ciprofloxacin have serious side effects.

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They are less likely to happen with the eyedrops, eye ointment or eardrops.

These serious side effects can happen in less than 1 in 100 people. Stop taking ciprofloxacin and tell your doctor straight away if you have:

muscle weakness, pain or swelling in your joints or tendons. This often begins in the ankle or calf, but could also be in your shoulder, arms or legs. It can occur in the first 2 days of taking ciprofloxacin or even several months after stopping. It is more common in children.pain or abnormal sensations (such as pins and needles that do not go away, tingling, tickling, numbness or burning) or weakness in your body, especially in the legs or armssevere tiredness, feel anxious or very low in mood, or have difficulty sleeping or remembering thingsdiarrhoea (perhaps with muscle cramps) that contains blood or mucus – if you have severe diarrhoea without blood or mucus for more than 4 days, you should also speak to a doctorsudden breathlessness, especially when you're lying downswollen ankles, feet or stomachseizures or fits (this side effect can happen if you have epilepsy)