Dear lactnetters, First of all congratulations to all the new IBCLCs. - was the longest three months of my life when it was me... Second, I got a call from a mom desperate for some information. She has a 6 day old baby. Mom has Bartter's syndrome, which her endocrinlologist treats with supplements of : K-dur, a potassium suppl. 200 milliequivalents/day magnesium 120 milliequivalents/day Her colstrum was expressed and tested and levels measured. She did not know the levels, Mds sadi they did not know safe levels, and to err on the side of caution, baby must be totally artificially-fed. Of note , is that mom has been on these supplements for 14 years, including during the entire pregnancy. Baby's levels were tested after birth and found to be normal. No info in Hale, Lawrence says that "the concentrations of electrolytes (sodium, potassium, and chloride) in milk is determined by an electrical potential gradient in the sectretory cell rather by maternal nutritional status" . Does that mean that supplementation would not increase milk levels? Also says that" there is no immediate influence of maternal sodium or potassium intake, either high or low, on postprandial milk sodium or potassium concentrations. Dietary potassium may influence milk potassium more significantly." Do those two statements make sense? They seem to say the opposite to me. On magnesium..." magnesium...levels in milk are not affected by dietary administration of these elements." This mother was told no BF ever , drank sage tea - 2 cups- and has not pumped for past several days. She would love to bring in a supply for her babe if she can get info to share with her endo, and ped.. This mom is waiting for your expertise as I type this. Thank you for any input you can give. My tremendous appreciation, ( and I am NOMAIL so please post to me privately as well as the list,) Judy Fram, Brooklyn, NY ~ [log in to unmask]