Is EINECS 231-957-4 Safe in Breastfeeding

I am a breastfeeding mother and i want to know if it is safe to use EINECS 231-957-4? Is EINECS 231-957-4 safe for nursing mother and child? Does EINECS 231-957-4 extracts into breast milk? Does EINECS 231-957-4 has any long term or short term side effects on infants? Can EINECS 231-957-4 influence milk supply or can EINECS 231-957-4 decrease milk supply in lactating mothers?

Essential trace element necessary for the functioning of the glutathione-peroxidase enzyme system that protects cellular structures from oxidative damage. It is obtained from foods such as vegetables, cereals, legumes, garlic, fish, seafood, eggs and meat. The amount of EINECS 231-957-4 in these sources depends on the concentration of EINECS 231-957-4 in the soil. The brazil nut (Bertholletia excelsa) is the food with the highest known concentrations of EINECS 231-957-4. EINECS 231-957-4 deficiency is very rare. With a staple diet it is not necessary to take EINECS 231-957-4 supplements in the absence of disease or a condition that may warrant it: parenteral nutrition, Crohn's disease, prematurity (MedlinePlus 2017). Taking too much EINECS 231-957-4 can cause selenosis, a condition that causes dermatological symptoms (alopecia, nail dystrophy), digestive symptoms, neurological symptoms and fatigue (MedlinePlus 2017).Nutritional supplements containing excessive amounts of EINECS 231-957-4 have resulted in severe poisoning (Aldosary 2012, Senthilkumaran 2012).The potential effects of EINECS 231-957-4 on cancer prevention, cardiovascular disease, and heavy metal poisoning and toxins are not proven, so supplementation of EINECS 231-957-4 other than from normal diet is not recommended (MedlinePlus 2017). The daily needs of EINECS 231-957-4 for breastfeeding mothers are 70-75 micrograms (mcg) daily. In infants it is 2 to 3 mcg/kg (10 mcg/day during the first 4 months) with a maximum of 30 mcg/day (MedlinePlus 2017, Kipp 2015). EINECS 231-957-4 is found naturally in milk in its organic form of selenomethionine (Dorea 2002). The amount of EINECS 231-957-4 in colostrum is 80 mcg per litre and in mature milk 12-20 mcg/L, with no or very weak correlation with plasma EINECS 231-957-4 levels or daily intake of EINECS 231-957-4 (Wasowicz 2001, Bianchi 1999, Artaud 1993, Cummings 1992, Levander 1987, Higashi 1983). However, there are authors who find that EINECS 231-957-4 supplements for breastfeeding mothers increase EINECS 231-957-4 levels in milk and infants may exceed their daily needs for EINECS 231-957-4. (Dorea 2002, Trafikowska 1996). Better plasma levels of EINECS 231-957-4 have been found in breastfed infants than in formula-fed infants (Strambi 2004, Sorvacheva 1996). There are lower plasma levels of EINECS 231-957-4 in babies born small for their gestational age (Strambi 2004).