Natamycin

Generic Name: natamycin (NA-ta-MYE-sin)
Brand Name: Natacyn

Natamycin is used for:

Treating certain types of fungal infections of the eye.

Natamycin is an antifungal. It works by killing sensitive fungi by interfering with the formation of the fungal cell wall, which results in the death of the fungus.

Do NOT use natamycin if:

  • you are allergic to any ingredient in natamycin

Contact your doctor or health care provider right away if any of these apply to you.

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Before using natamycin:

Some medical conditions may interact with natamycin. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

  • if you are pregnant, planning to become pregnant, or are breast-feeding
  • if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
  • if you have allergies to medicines, foods, or other substances

Some MEDICINES MAY INTERACT with natamycin. Because little, if any, of natamycin is absorbed into the blood, the risk of it interacting with another medicine is low.

Ask your health care provider if natamycin may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.

How to use natamycin:

Use natamycin as directed by your doctor. Check the label on the medicine for exact dosing instructions.

  • Natamycin is for use in the eye only.
  • Do not use natamycin if the container is damaged.
  • Shake well before each use.
  • To use natamycin in the eye, first, wash your hands. Tilt your head back. Using your index finger, pull the lower eyelid away from the eye to form a pouch. Drop the medicine into the pouch and gently close your eyes. Immediately use your finger to apply pressure to the inside corner of the eyelid for 1 to 2 minutes. Do not blink. Remove excess medicine around your eye with a clean, dry tissue, being careful not to touch your eye. Wash your hands to remove any medicine that may be on them.
  • To prevent germs from contaminating your medicine, do not touch the applicator tip to any surface, including the eye. Keep the container tightly closed.
  • Do not wear contact lenses if you have a fungal infection of the eye. Check with your doctor if you have questions about wearing contact lenses while you use natamycin.
  • To clear up your infection completely, use natamycin for the full course of treatment. Keep using it even if you feel better in a few days.
  • If you miss a dose of natamycin, use it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not use 2 doses at once.

Ask your health care provider any questions you may have about how to use natamycin.

Important safety information:

  • If symptoms do not get better within 7 to 10 days or they get worse, check with your doctor.
  • Be sure to use natamycin for the full course of treatment. If you do not, the medicine may not clear up your infection completely. The fungus could also become less sensitive to this or other medicines. This could make the infection harder to treat in the future.
  • Natamycin is not recommended for use in CHILDREN; safety and effectiveness have not been confirmed.
  • PREGNANCY and BREAST-FEEDING: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using natamycin while you are pregnant. It is not known if natamycin is found in breast milk. If you are or will be breast-feeding while you are using natamycin, check with your doctor or pharmacist to discuss the risks to your baby.

Possible side effects of natamycin:

All medicines may cause side effects, but many people have no, or minor, side effects. Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue).

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.

If OVERDOSE is suspected:

Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately.

Proper storage of natamycin:

Store natamycin at room temperature, between 59 and 75 degrees F (15 and 24 degrees C), or in the refrigerator, between 36 and 46 degrees F (2 and 8 degrees C). Store away from heat, moisture, and light. Do not freeze. Do not store in the bathroom. Keep natamycin out of the reach of children and away from pets.

General information:

  • If you have any questions about natamycin, please talk with your doctor, pharmacist, or other health care provider.
  • Natamycin is to be used only by the patient for whom it is prescribed. Do not share it with other people.
  • If your symptoms do not improve or if they become worse, check with your doctor.
  • Check with your pharmacist about how to dispose of unused medicine.

This information should not be used to decide whether or not to take natamycin or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about natamycin. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to natamycin. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using natamycin.

Issue Date: September 3, 2014
Database Edition 14.3.1.003
Copyright © 2014 Wolters Kluwer Health, Inc.

Disclaimer: This information should not be used to decide whether or not to take this medicine or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using this medicine.

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