Levorphanol, Oral: References

Facts & Comparison. Facts & Comparisons Web Site. http://online.factsandcomparisons.com/MonoDisp.aspx?monoID=fandc-hcp13404&quick=469804%7c5&search=469804%7c5&isstemmed=True&NDCmapping=-1&fromTop=true#firstMatch. Accessed October 3, 2016.

Levorphanol [package insert]. Roxanne Laboratories Inc., Columbus, OH; September 2015. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=b2ab70e4-ca0c-4a73-9c98-974bf94e890c. Accessed October 3, 2016.