Gentamicin Sulfate

This medication can cause serious kidney problems and nerve damage, resulting in permanent hearing loss (including deafness or decreased hearing) and balance problems. The risk is increased if you are older, already have kidney disease, or if you have a severe loss of body water (dehydration). Your risk is also increased if you receive high doses, or with longer use of this medication.

Tell your doctor right away if you notice ringing/roaring sounds in the ears, hearing loss, dizziness, or an unusual decrease in the amount of your urine.

Careful monitoring by your doctor will reduce the risk of these side effects. Monitoring may include hearing, kidney, urine, and drug blood level tests.

Avoid other medications that may increase your risk for these serious side effects if taken together with gentamicin. See also Drug Interactions section.

Do not share this medication with others.

This medication has been prescribed for your current condition only. Do not use it later for another infection unless your doctor tells you to.

Before using gentamicin, tell your doctor or pharmacist if you are allergic to it; or to other aminoglycoside antibiotics (such as tobramycin); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history.

After you apply this drug, your vision may become temporarily blurred. Do not drive, use machinery, or do anything that needs clear vision until you can do it safely.

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

This drug may pass into breast milk. Consult your doctor before breastfeeding.

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

Use this medication in the affected eye(s) as directed by your doctor, usually every 4 hours.

To apply eye drops, wash your hands first. To avoid contamination, do not touch the dropper tip or let it touch your eye or any other surface. Use in the eyes only. Do not swallow or inject.

Do not wear contact lenses while you are using this medication. Sterilize contact lenses according to the manufacturer's directions, and check with your doctor before you begin using them again.

Tilt your head back, look upward, and pull down the lower eyelid to make a pouch. Hold the dropper directly over your eye and place one drop into the pouch as directed by your doctor. Look downward, gently close your eyes, and place one finger at the corner of your eye (near the nose). Apply gentle pressure for 1 to 2 minutes before opening your eyes. This will prevent the medication from draining out. Try not to blink or rub your eye. Repeat these steps for your other eye if so directed or if your dose is for more than 1 drop. Do not rinse the dropper. Replace the dropper cap after each use.

The dosage is based on your medical condition and response to treatment. Your doctor may direct you to use this medication more often at first, then use it less often as the infection improves. Follow your doctor's directions carefully. Your doctor may prescribe gentamicin drops for use during the day and gentamicin ointment at bedtime.

If you are using another kind of eye medication (such as drops or ointments), wait at least 5 minutes before applying other medications. Use eye drops before eye ointments to allow the drops to enter the eye.

Wait several minutes for your vision to clear before driving or operating machinery.

Use this medication regularly in order to get the most benefit from it. To help you remember, use it at the same times each day. Continue to use this medication for the full time prescribed, even if symptoms disappear after a few days. Stopping the medication too early may result in a return of the infection.

Tell your doctor if your condition lasts or gets worse.

Eye stinging/burning/redness or temporary blurred vision may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.

Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Use of this medication for prolonged or repeated periods may result in other types of eye infections, including fungal infections. Stop using this medication and contact your doctor if you notice new or worsening eye symptoms (such as pain, swelling, thick discharge or pus).

Rarely, gentamicin products used in the eye may be absorbed and may cause serious side effects. Tell your doctor right away if you have any serious side effects, including: easy bruising/bleeding, mental/mood changes (such as hallucinations).

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/safety/medwatch-fda-safety-information-and-adverse-event-reporting-program.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Different brands of this medication have different storage needs. Check the product package for instructions on how to store your brand, or ask your pharmacist. Do not freeze. Keep all medications away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.

If you miss a dose, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Use your next dose at the regular time. Do not double the dose to catch up.