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Nystatin is a custom drug that is classified in the family of drugs known as antifungals. As with all antifungals, nystatin's primary function is to stop the growth of fungus. This drug is commonly given to patients suffering from various infections such as yeast infections of the stomach or mouth, as well as diaper rash, and other conditions.


Nystatin has many uses and as such it comes in a variety of forms, some for internal use such as capsules, tablets, powders, and suspensions, and some for strictly external use such as creams or ointments.

Oral forms of nystatin should be taken with a glass of water. If taking a suspension, be sure that you shake it well before measuring your dose to make sure that you will get the right amount of medicine, at the proper potency, as prescribed by your doctor. Always measure suspension doses with an approved dosing syringe to ensure accuracy in dosage. Follow your doctor's directions for dosage.

External forms of nystatin, such as creams for example, should be applied to a clean and dry target area. Apply only a thin layer across the area where medication is needed, and then just outside beyond its edges onto the surrounding healthy skin. Wash your hands thoroughly after each application. Follow your doctor's instructions on usage and frequency of application.


Anyone using this drug could experience some common side effects. Watch for anything that presents and see your doctor if you encounter any side effects whatsoever that persist or worsen. Some of the known side effects patients have experienced are listed below for your convenience. This is only a partial list.



  • Redness
  • Irritation

Allergic Reaction Warning:

Some users may experience an allergic reaction to nystatin. If you experience anything that feels severe, feels like it could be an allergic reaction, or experience any of the symptoms and signs listed below, get medical help immediately.

  • Trouble Breathing
  • Extreme Dizziness
  • Rash

Swelling of the face, throat or tongue



  • Nausea and/or Vomiting
  • Skin Rash
  • Irritation (mouth)
  • Diarrhea
  • Upset Stomach


  • Trouble Breathing
  • Extreme Skin Reaction (possibly with sore throat, fever, or swelling of the tongue or face, possibly with pain, eye burning, purple or red rash on skin that begins to spread perhaps with some peeling or blistering as well)

NOTE: If you experience any side effect that feels severe, always seek emergency medical treatment at once.


Anyone contemplating the use of a new drug should first meet with their primary care doctor, undergo a full medical evaluation, and then consult with him or her about the efficacy, safety, and possible benefits of the drug before beginning use.

Ask your doctor about all contraindications to ensure that nystatin is safe for your use.

Nystatin is contraindicated for use by anyone who has a hypersensitivity to nystatin or any of its components.

  • "It is rare to find health professionals who are so willing to educate the patient on what they need to know."

    Clair C. | West Hollywood, CA