Concentration of vitamin B6 in the breast milk is directly related to the amount present in diet with the possibility of a high increment by an excessive consumption through the diet. Daily allowance of vitamin B6 ranges from 2 to 3 mg. A balanced and varied diet is enough without a need for extra supplementation with this vitamin. Vitamin B6 deficiency is extremely rare since it is widely distributed in many foods. In those cases where supplementation is required, it is recommended not to exceed 40 mg a-day. There are controversial data on the capacity of a high dose of Pyridoxine to inhibit the secretion of Prolactin and suppress the milk production. The American Academy of Pediatrics rates it as usually compatible with breastfeeding.