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Gentamicin ear drops

Gentamicin drops are used to treat ear infections. Follow carefully the instructions you have been given for using the drops.

Unless you have been told otherwise, use two or three drops three or four times a day, and also at night.

Throw the bottle away after your treatment has finished, even if there is some liquid left.

The most common side effects of gentamicin are mild irritation, itching or stinging.

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About gentamicin ear drops

Type of medicine

Anti-infective ear drop

Used for

Treatment of ear infections in adults and children

Available as

Drops (which can be prescribed for use in eyes or ears)

What are gentamicin ear drops used for?

Gentamicin ear drops are used to treat bacterial ear infections. The drops kill germs (bacteria) which are the cause of infection.

If the ear is swollen as well as infected (as in otitis externa, for example), your doctor may prescribe gentamicin ear drops which also contain hydrocortisone. These drops will reduce the inflammation as well as treat the infection.

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Side effect of gentamicin ear drops

Common side effects of gentamicin ear drops are:

  • Mild irritation.

  • Itching.

  • Stinging.

A full list of the side effects which can be associated with your medicine, is from the manufacturer's printed information leaflet supplied with the medicine.

Speak with your doctor or pharmacist if any of the following continue or become troublesome.

Gentamicin ear drop side effects

What can I do if I experience this?

Mild irritation, itching, or stinging

If this continues or becomes severe, speak with your doctor

If you experience any other symptoms which you think may be due to the drops, speak with your doctor or pharmacist for further advice.

Who should not use gentamicin ear drops?

Some medicines are not suitable for people with certain conditions, and sometimes a medicine can only be used if extra care is taken. Before you (or your child) start using gentamicin drops, it is important that your doctor knows:

  • If you have a burst (perforated) eardrum.

  • If you are pregnant or breastfeeding.

  • If you have ever had an allergic reaction to gentamicin or to any other antibiotic, or to any other ear drops.

  • If you have a condition called myasthenia gravis. This is a condition which causes muscle weakness.

  • If you are taking or using any other medicines. This includes any medicines you are taking which are available to buy without a prescription, as well as herbal and complementary medicines.

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How to use gentamicin ear drops

Always read the leaflet in the pack before starting lymecycline. It explains how to take it and lists possible side effects.

  1. Wash your hands before you begin.

  2. Clean your ear gently with warm water and pat it dry.

  3. Remove the cap from the bottle of ear drops.

  4. Lie down, or tilt your head a little, so that the affected ear is facing upwards.

  5. Gently pull your earlobe to straighten the ear canal.

  6. Hold the container upside down near to the ear. Try not to touch the inside of your ear as you do this.

  7. Apply enough pressure to the container to release two or three drops into your ear.

  8. Keep your ear facing upwards for a few minutes to allow the solution to come into contact with the affected area.

  9. Repeat the process in your other ear if you have been asked to use the drops in both ears.

  10. Replace the cap on to the bottle of drops.

Getting the most from your treatment

  • Take lymecycline exactly as your doctor tells you to and always check the label for the correct dose. It is usually 3-4 times a day and at night.

  • Don’t miss doses - if you forget, apply the drops as soon as you remember.

  • Don’t use cotton buds or objects inside your ear as they can irritate or damage the skin. Wipe only the outer ear with a clean cloth or tissue if there’s any discharge.

  • You will be prescribed a short course of treatment (usually no more than 7-10 days). If you feel your infection is no better after this time, make another appointment to see your doctor for advice.

How to store gentamicin ear drops

  • Keep all medicines out of the reach and sight of children.

  • Store in a cool, dry place, away from direct heat and light.

  • Throw away the bottle of ear drops after you have finished your course of treatment, even if there is some liquid left.

  • Do not keep opened bottles to use later, as ear drops must not be used if the bottle has been opened for longer than four weeks.

Important information about all medicines

Important information about all medicines

If you suspect that someone has swallowed some of this medicine, contact the accident and emergency department of your local hospital for advice

If you buy any medicines check with a pharmacist that they are safe to use with your other medicines.

If you are having an operation or dental treatment, tell the person carrying out the treatment which medicines you are using.

This medicine is for you. Never give it to other people even if their condition appears to be the same as yours.

Do not keep out-of-date or unwanted medicines. Take them to your local pharmacy which will dispose of them for you.

If you have any questions about this medicine ask your pharmacist.

Report side effects to a medicine or vaccine

If you experience side effects, you can report them online through the Yellow Card website.

Frequently asked questions

How long does it take for gentamicin ear drops to work?

Gentamicin ear drops usually start to ease symptoms within a few days. Most infections improve significantly within 7 days, as long as the drops are used exactly as prescribed.

What does gentamicin do to the middle ear?

Gentamicin works by killing bacteria that cause middle ear infections, helping reduce pain, swelling and discharge. It is used carefully, as high doses or prolonged use can affect the balance or hearing structures in the inner ear.

Are gentamicin ear drops safe to use during pregnancy?

Gentamicin ear drops are generally avoided in pregnancy, as aminoglycosides can pose a small risk to the baby if significant absorption occurs. A doctor will usually recommend a safer alternative unless the benefits clearly outweigh the risks.

Further reading and references

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Article history

The information on this page is written and peer reviewed by qualified clinicians.

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