Dr. Brown's Standard Preemie Nipple
https://www.drbrownsbaby.com/medical/products/slow-nipples/
Additional Resources: Choosing a Bottle Nipple handout
For healthcare providers: to order from Dr. Brown’s you must set up an account first. Dr. Brown’s Medical Rep: Sandra J. Aubuchon saubuchon@handi-craft.com
www.drbrownsbaby.com/medical
Additional resources: see Table 18: Nipple Flow Rates