Emulsifier
Only a limited number of emulsifiers is commonly regarded as safe to use for parenteral administration, of which the most important is Lecithin. Compared with its synthetic alternatives, Lecithin can be totally biodegraded and metabolised, since it is an integral part of biological membranes, making it virtually non-toxic. Other emulsifiers can only be excreted via the kidneys, creating a toxic load. The emulsifier of choice for most fat emulsions used for Parenteral nutrition is a highly purified Egg Lecithin such as Lipova-E120 from VAV Life Sciences due to it's low toxicity and complete integration with cell membranes.
Read more about this topic: Parenteral Nutrition