Available in injectables for intravenous and parenteral routes. It is potentially fatal, and can occur whether receiving enteral or parenteral nutrition. Occasionally nutrients need to be given through an intravenous line, known as parenteral nutrition. Estrogen is available in oral, parenteral, and transdermal formulations. There are several methods of administration, including parenteral and intranasal. Nutrition is an early priority, mouth or nasogastric tube feeding being preferable over parenteral routes. It is available in oral and parenteral formulations. Surgical debridement is rarely required after an extended course of parenteral antimicrobial therapy. In reality various effects overlap, including haemodilution or application of high doses of parenteral anticoagulants. Reports of successful treatment with parenteral penicillin or ampicillin exist. Hypersensitivity is a rarely described but significant complication of parenteral nutrition therapy. MCTs are an ingredient in some specialised parenteral nutritional emulsions in some countries. The bioavailability is around 62% for parenteral routes. It was not specified whether the dose was oral, parenteral or IV. Therefore n-3-rich fat may alter the course of parenteral nutrition associated liver disease.