Parenteral nutrition: a call to action for harmonization of policies to increase patient safety.

Unsafe medication practices and medication errors are leading causes of injury and avoidable harm worldwide and are highest in vulnerable groups. In 2017, the World Health Organization launched the third Medication Without Harm Global Patient Safety Challenge to try to reduce risks related to medical treatment. Parenteral nutrition (PN) is in the unique position that, although licensed products are available from manufacturers, formulas may be prepared ad hoc for first-line use that might not be subject to the same regulatory oversight.