To print: Use your web browser's print feature. Close this window after printing.

Nystatin for Yeast Infections While Breast-Feeding

Table of Contents

Nystatin for Yeast Infections While Breast-Feeding


Generic Name

How It Works

Nystatin is an antibiotic that kills yeast, such as Candida albicans.

Why It Is Used

Nystatin is used to treat a yeast infection that is causing:

Nystatin is prescribed as a cream or ointment to treat yeast infections of the breast and nipple. A liquid formulation is used to treat thrush in a baby's mouth. For more information, see the topic Thrush.

How Well It Works

Nystatin often relieves the symptoms of breast yeast infections in 24 to 72 hours. Treatment for thrush in the child usually takes 1 to 2 weeks. To ensure that the yeast has been eliminated, treatment is continued for 7 to 14 days after symptoms clear up.1

Side Effects

All medicines have side effects. But many people don't feel the side effects, or they are able to deal with them. Ask your pharmacist about the side effects of each medicine you take. Side effects are also listed in the information that comes with your medicine.

Here are some important things to think about:

Call 911 or other emergency services right away if you have:

Call your doctor if you have:

Nystatin rarely causes side effects in a mother or breast-feeding child. If your baby gets too much of the medicine, though, he or she may have diarrhea, belly pain, and/or nausea.

See Drug Reference for a full list of side effects. (Drug Reference is not available in all systems.)

What To Think About

Usually both the breast-feeding woman and her baby are treated at the same time, even if only one of the two has symptoms.

Talk to your doctor if tenderness and redness go away but deep pain in the breast continues. The infection may be inside the breast. You will usually need another prescription medicine that may be taken for a couple of weeks or more.

Taking medicine

Medicine is one of the many tools your doctor has to treat a health problem. Taking medicine as your doctor suggests will improve your health and may prevent future problems. If you don't take your medicines properly, you may be putting your health (and perhaps your life) at risk.

There are many reasons why people have trouble taking their medicine. But in most cases, there is something you can do. For suggestions on how to work around common problems, see the topic Taking Medicines as Prescribed.

Advice for women

When you are pregnant, breast-feeding, or planning to get pregnant, do not use any medicines unless your doctor tells you to. Some medicines can harm your baby. This includes prescription and over-the-counter medicines, vitamins, herbs, and supplements. And make sure that all your doctors know that you are pregnant, breast-feeding, or planning to get pregnant.


Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor if you are having problems. It's also a good idea to know your test results and keep a list of the medicines you take.

Complete the new medication information form (PDF) to help you understand this medication.



  1. Lawrence RM, Lawrence RA (2009). The breast and physiology of lactation. In RK Creasy et al., eds., Creasy and Resnik's Maternal-Fetal Medicine, 6th ed., pp. 125–142. Philadelphia: Saunders Elsevier.

Credits for Nystatin for Yeast Infections While Breast-Feeding

By Healthwise Staff
Primary Medical Reviewer Sarah Marshall, MD - Family Medicine
Specialist Medical Reviewer Kirtly Jones, MD - Obstetrics and Gynecology
Last Revised April 12, 2013

Note: The "printer friendly" document will not contain all the information available in the online document. Some information (e.g. cross-references to other topics, definitions or medical illustrations) is only available in the online version.

© 1995-2014 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information.