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Gentak

Generic Name: gentamicin ophthalmic (JEN ta MYE sin off THAL mik)
Brand Name: Garamycin Ophthalmic, Gentak, Gentasol, Ocu-Mycin

Medically reviewed on December 15, 2017

What is Gentak?

Gentak is an antibiotic.

Gentak is used to treat bacterial infections of the eyes.

Gentak may also be used for purposes other than those listed in this medication guide.

Important Information

Do not touch the dropper or tube opening to any surface, including your eyes or hands. The dropper or tube opening is sterile. If it becomes contaminated, it could cause an infection in your eye.

Apply light pressure to the inside corner of your eye (near your nose) after each drop to prevent the fluid from draining down your tear ducts.

Who should not use Gentak?

Do not use Gentak if you have a viral or fungal infection in your eye. It is used to treat infections caused by bacteria only.

It is not known whether Gentak will harm an unborn baby. Do not use this medicine without first talking to your doctor if you are pregnant.

It is also not known whether Gentak passes into breast milk. Do not use this medicine without first talking to your doctor if you are breast-feeding a baby.

How should I use Gentak?

Use Gentak eyedrops or ointment exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.

Wash your hands before using the eyedrops or ointment.

To apply the eyedrops:

  • Shake the drops gently to be sure the medicine is well mixed. Tilt your head back slightly and pull down on your lower eyelid. Position the dropper above your eye. Look up and away from the dropper. Squeeze out a drop and close your eye. Apply gentle pressure to the inside corner of your eye (near your nose) for about 1 minute to prevent the liquid from draining down your tear duct. If you are using more than one drop in the same eye or drops in both eyes, repeat the process with about 5 minutes between drops.

To apply the ointment:

  • Hold the tube in your hand for a few minutes to warm it up so that the ointment comes out easily. Tilt your head back slightly and pull down gently on your lower eyelid. Apply a thin film of the ointment into your lower eyelid. Close your eye and roll your eyeball around in all directions for 1 to 2 minutes. If you are applying another eye medication, allow at least 10 minutes before the next application.

Do not touch the dropper or tube opening to any surface, including your eyes or hands. The dropper or tube opening is sterile. If it becomes contaminated, it could cause an infection in your eye.

Do not use any eyedrop that is discolored or has particles in it.

Store Gentak at room temperature away from moisture and heat. Keep the bottle or tube properly capped.

What happens if I miss a dose?

Use the missed dose as soon as you remember. However, if it is almost time for your next regularly scheduled dose, skip the missed dose and use the next one as directed. Do not use a double dose of this medication.

What happens if I overdose?

An overdose of this medication is unlikely to occur. If you do suspect an overdose, wash the eye with water and call an emergency room or poison control center near you. If the drops or ointment have been ingested, drink plenty of fluid and call an emergency center for advice.

What should I avoid while using Gentak?

Use caution when driving, operating machinery, or performing other hazardous activities. Gentak may cause blurred vision. If you experience blurred vision, avoid these activities.

If you wear contact lenses, ask your doctor if you should wear them during treatment. After applying this medication, wait at least 15 minutes before inserting contact lenses, unless otherwise directed by your doctor.

Do not use other eye drops or medications during treatment with Gentak unless otherwise directed by your doctor.

Gentak side effects

Serious side effects are not expected to occur during treatment with this medication.

Commonly, some eye burning, stinging, irritation, itching, redness, blurred vision, eyelid itching, eyelid swelling, or sensitivity to light may occur.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

See also: Side effects (in more detail)

What other drugs will affect Gentak?

Do not use other eye drops or medications during treatment with Gentak unless otherwise directed by your doctor.

Drugs other than those listed here may also interact with Gentak. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines.

Further information

  • Your pharmacist has additional information about Gentak written for health professionals that you may read.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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