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Nystop

Generic name: nystatin topical

Brand names: Nyamyc, Nystop, Mycostatin Topical, Pedi-Dri, Pediaderm AF

Last updated November 3, 2026 0 views
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What is Nystop?

Nystatin is a medicine that fights fungal infections. Nystatin stops fungus from growing on your skin.

Nystop (for the skin) treats skin infections caused by yeast.

Nystop is not for treating a vaginal yeast infection.

Nystop may also be used for other reasons not mentioned in this medication guide.

This section was rewritten for readability and reviewed for meaning.

Warnings

Do not use Nystop to treat any skin condition that has not been checked by your doctor.

Nystop (for the skin) is not for treating a vaginal yeast infection.

Avoid getting this medication in your eyes or mouth. If this occurs, rinse with water.

Use this medication for the full prescribed length of time. Your symptoms may improve before the infection is completely gone.

Call your doctor if your symptoms do not improve, or if they worsen while using Nystop.

Do not share this medication with anyone else, even if they have the same symptoms as you.

This section was rewritten for readability and reviewed for meaning.

Before taking this medicine

You should not use Nystop if you have ever had an allergic reaction to it.

FDA pregnancy category C. It is not known whether Nystop will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.

It is not known whether nystatin topical passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

This section was rewritten for readability and reviewed for meaning.

Nystop side effects

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using Nystop and call your doctor right away if you have severe burning, itching, rash, pain, or other irritation where the medicine is applied.

Less serious side effects may include mild itching or irritation.

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.

This section was rewritten for readability and reviewed for meaning.

How should I use Nystop?

Use exactly as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.

Do not use Nystop to treat any skin condition that has not been checked by your doctor.

Wash your hands before and after using this medication.

Clean and dry the skin before you apply Nystop.

Do not cover treated skin with bandages or dressings that do not allow air circulation unless your doctor tells you to.

Use this medication for the full prescribed length of time. Your symptoms may improve before the infection is completely cleared.

Call your doctor if your symptoms do not improve, or if they get worse while using Nystop.

Do not share this medication with another person, even if they have the same symptoms you have.

Store at room temperature away from moisture and heat.

What happens if I miss a dose?

Use the missed dose as soon as you remember. If it is almost time for your next scheduled dose, skip the missed dose. Do not use extra medicine to make up for the missed dose.

This section was rewritten for readability and reviewed for meaning.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

  • Avoid getting this medication in your eyes or mouth. If this happens, rinse with water.
  • Avoid wearing tight-fitting, synthetic clothing (such as nylon) that doesn't allow air circulation. Wear clothing made of loose cotton and other natural fibers until your infection is healed.

This section was rewritten for readability and reviewed for meaning.

What other drugs will affect Nystop?

It is unlikely that other drugs you take by mouth or inject will affect Nystop applied to the skin. However, many drugs can interact with each other. Inform your doctor about all the medications you use. This includes prescription drugs, over-the-counter medicines, vitamins, and herbal products. Do not start a new medication without informing your doctor.

This section was rewritten for readability and reviewed for meaning.

Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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Content is provided for education and is not medical advice. See our medical disclaimer.