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Neomycin Sulfate

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Neomycin Sulfate

Neomycin Sulfate Side Effects Center

Medical Editor: John P. Cunha, DO, FACOEP

Neomycin Sulfate is used to reduce the risk of infection during surgery of the bowel. Neomycin is also used to reduce the symptoms of hepatic coma. It is an antibiotic. This medication is available in generic form. Common side effects include nausea or vomiting, or diarrhea.

Neomycin Sulfate dose depends on the condition being treated. The lowest possible dose and the shortest possible treatment period to control the condition should be used to reduce toxicity. Neomycin Sulfate may interact with other drugs that affect the kidneys, Do not take any other prescription or over-the-counter medicines, including vitamins, minerals, and herbal products, without first talking to your doctor. It is not recommended to take Neomycin Sulfate during pregnancy, as it is known to be harmful to a fetus. It is not known whether this medication passes into breast milk. Consult your doctor before breast-feeding.

Our Neomycin Sulfate Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

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.

What is Patient Information in Detail?

Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.

Neomycin Sulfate in Detail - Patient Information: Side Effects

If you experience any of the following serious side effects, stop taking neomycin and seek emergency medical attention:

  • an allergic reaction (shortness of breath; closing of the throat; hives; swelling of the lips, face, or tongue; rash; or fainting);
  • little or no urine;
  • decreased hearing, ringing in the ears, or a feeling of fullness in the ears;
  • dizziness, clumsiness, or unsteadiness;
  • numbness, skin tingling, muscle twitching, or seizures; or
  • severe watery diarrhea and abdominal cramps.

Other, less serious side effects may be more likely to occur. Continue to take neomycin and talk to your doctor if you experience

  • nausea or vomiting; or
  • diarrhea.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Neomycin Sulfate (Neomycin Sulfate) »

What is Prescribing information?

The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.

Neomycin Sulfate FDA Prescribing Information: Side Effects
(Adverse Reactions)


The most common adverse reactions to oral neomycin sulfate are nausea, vomiting and diarrhea. The "Malabsorption Syndrome" characterized by increased fecal fat, decreased serum carotene and fall in xylose absorption has been reported with prolonged therapy. Nephrotoxicity, ototoxicity and neuromuscular blockage have been reported (see BOXED WARNINGS and PRECAUTIONS sections).

Read the entire FDA prescribing information for Neomycin Sulfate (Neomycin Sulfate) »


Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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