Are there standardized “lactation rating tables” identifying risks of drugs on breastmilk?
Dr. Tom Hale created Lactation Risk Categories for his book, Medications and Mothers’ Milk. The categories L1 to L5 are modeled after the obstetrical pregnancy risk categories for use of medications and drugs in pregnant women. The National Institutes of Health also has a TOXNET database at: http://toxnet.nlm.nih.gov. The Lactation Risk Categories are used internationally and are listed below.