A supplemental nursing system (SNS), is a device that can be used to provide supplemental nutrition to a breastfeeding baby. It consists of a container, usually made of plastic, that holds breast milk or formula, and a tube that attaches from the bottle down to the mother’s nipple.

The purpose of an SNS is to help support breastfeeding, especially when the baby is having difficulty latching on to the breast or when the mother is experiencing low milk supply. It can also be used to provide supplemental nutrition to a baby who is not able to breastfeed directly due to medical reasons.

To use an SNS, the feeding parent attaches the tube to her breast or chest using a small piece of adhesive tape, and positions the tube so that the end is in the baby's mouth. The baby then suckles at the breast or chest and receives milk from both the breast and the SNS. The SNS can also be used with a feeding device, such as a bottle or syringe, if the baby is not able to breastfeed directly.

There are several benefits to using an SNS. First, it can help stimulate milk production in the mother, which is important for establishing and maintaining a good milk supply. Second, it can help the baby to latch on to the breast and maintain a good sucking rhythm, which can improve milk transfer and thereby help increase milk production. Third, it can provide supplemental nutrition to a baby who is not able to breastfeed effectively, which can help prevent a slowdown in weight gain or growth faltering.

There are also some potential drawbacks to using an SNS. The device can be cumbersome and difficult to use, especially for first-time mothers. It can also be expensive which may pose a barrier for some families. But there are some DIY versions of the SNS that I’ve seen ‘rigged’ using bottles and feeding tubes.

Overall, an SNS can be a helpful tool for breastfeeding mothers who are experiencing difficulties with milk production or getting their babies to gain weight appropriately. It is important to work with a lactation consultant or other healthcare provider to ensure that the SNS is being used correctly and to address any issues that may arise. With proper use and support, an SNS can be a valuable tool for supporting the breastfeeding journey while ensuring the health and well-being of both mother and baby.