Milk Oversupply

Skip Navigation

What is milk oversupply?

Milk oversupply happens when your body makes more milk than your baby uses. It's sometimes called overabundant milk supply or hyperlactation. With oversupply, your milk may come out very fast. This can make it hard for your baby to swallow it. Oversupply usually only lasts for a few weeks after your baby is born.

What are the symptoms?

Your baby's symptoms may include:

  • Crying during feeding.
  • Refusing or resisting feeding.
  • Gulping often during feeding.
  • Gaining too much weight.
  • Gaining too little weight. This could be because:
    • Your milk flow is too fast for your baby to take in enough milk during feedings.
    • Your baby isn't able to feed long enough to get the fattiest part of your milk.
  • Having gas.
  • Having large, frothy, green stools.

Your symptoms may include:

  • Full breasts that keep leaking between feedings. Your breasts may spray.
  • Breast pain.
  • Breast engorgement. This can lead to blocked milk ducts and inflammation.

How is milk oversupply treated?

Having too much milk can be frustrating. But there are things you can do to care for yourself and your baby.

If you think you have too much milk, talk to your doctor or midwife or a lactation consultant. They can help you. They may advise you to:

  • Feed from just one breast during a breastfeeding session or for a block of time (typically 3 hours). Then at the next session or block of time, feed from the other breast. You can remove just a little bit of milk from the unused breast to make you more comfortable.
  • Try leaning back and breastfeeding "uphill" so that your baby is above the nipple.
  • Try breastfeeding as you lie on your side so that extra milk dribbles out of your baby's mouth.
  • Take ibuprofen (Advil, Motrin) to reduce pain and swelling. Ibuprofen is safe when taken as directed.

If your breasts still feel uncomfortable after breastfeeding, try a cold compress to reduce swelling. Put ice or a cold pack on the area for 10 to 20 minutes at a time. Put a thin cloth between the ice and your skin. To prevent damage to your skin, place a thin cloth between your breast and the cold pack.

Related Information


Current as of: July 10, 2023

Author: Healthwise Staff
Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

The Health Encyclopedia contains general health information. Not all treatments or services described are covered benefits for Kaiser Permanente members or offered as services by Kaiser Permanente. For a list of covered benefits, please refer to your Evidence of Coverage or Summary Plan Description. For recommended treatments, please consult with your health care provider.