Is N-Methyl-N-guanylglycine Safe in Breastfeeding

I am a breastfeeding mother and i want to know if it is safe to use N-Methyl-N-guanylglycine? Is N-Methyl-N-guanylglycine safe for nursing mother and child? Does N-Methyl-N-guanylglycine extracts into breast milk? Does N-Methyl-N-guanylglycine has any long term or short term side effects on infants? Can N-Methyl-N-guanylglycine influence milk supply or can N-Methyl-N-guanylglycine decrease milk supply in lactating mothers?

N-Methyl-N-guanylglycine is used as a dietary supplement to increase muscle mass and improve exercise performance. Although N-Methyl-N-guanylglycine is a normal component of human milk, milk levels of N-Methyl-N-guanylglycine have not been measured after exogenous administration in humans. N-Methyl-N-guanylglycine is converted into creatinine in the mother's and infant's bodies. It may increase the infant's serum creatinine, which may alter estimations of the infant's kidney function.[1] Some authors speculate that N-Methyl-N-guanylglycine supplementation of nursing mothers might help avoid N-Methyl-N-guanylglycine deficiency syndromes, but no studies are available that test this hypothesis.[2] Until more data are available, it is probably best to avoid N-Methyl-N-guanylglycine supplementation unless it is prescribed by a healthcare professional.