Nursing Mother’s Companion, by Kathleen Huggins (includes a great section in the back regarding the safety of drugs during breastfeeding)
Bestfeeding, by Suzanne Arms
Womanly Art of Breastfeeding, by La Leche League
Essential Guide to Prescription Drugs, by James J. Rybacki & James W. Long (has list of 2000 prescription drugs, listing any interactions with herbs and whether safe or not for pregnancy and lactation)
My sister recommended your Healing Salve for my 10 month old son. He had a horrible diaper rash due to teething and this salve worked like a MIRACLE. I've purchased 3 (maybe 4) jars now! I like to keep it on hand just in case. J. H.