Correction to: Carfentanil: a narrative review of its pharmacology and public health concerns.

In the article entitled: "Carfentanil: a narrative review of its pharmacology and public health concerns" published online and in the April 2019 issue of the Journal, Can J Anesth 2019; DOI: https://doi.org/10.1007/s12630-019-01294-y , the Figure showed the wrong structures for remifentanil and carfentanil.

Carfentanil: a narrative review of its pharmacology and public health concerns.

Carfentanil is a synthetic fentanyl analogue approved for veterinary use. It is a mu-opioid receptor agonist with an estimated analgesic potency approximately 10,000 times that of morphine and 20-30 times that of fentanyl, based on animal studies. Since 2016, an increasing number of reports describe detection of carfentanil in the illicit drug supply.