How do I know when to change my Natural Response nipple?

Following your baby’s cues is the best method when deciding to change the nipple to a different flow rate. The Natural Response nipples are available in flow rates from 1 to 5 in the United States and Canada and from 1 to 6 in other countries. Nipples with the highest flow rate 6 are more suitable for thicker liquids or babies who want a fast flow.

As long as your baby is calm and comfortable while feeding, there is no need to change the nipple to a different flow rate. You also do not need to change to a higher flow rate nipple based on the baby’s age.

Use a higher flow rate if your baby falls asleep during feeding, gets frustrated, or plays with the nipple instead of drinking. Use a lower flow rate if your baby is gulping the milk down or if milk drips out of its mouth during feeding.

Finding the right nipple is important:
If your newborn baby is consistently not taking enough milk throughout the feeding sessions or has complications in getting milk, switch to a nipple with a higher flow rate. 
If persistent feeding issues occur, consult a healthcare professional.

For hygienic reasons, we recommend replacing feeding nipples every 3 months. Inspect before each use and pull the feeding nipple in all directions. Discard nipples at the first signs of damage or weakness. Replacement nipples are available separately.