Butorphanol, Injection: References

U.S. Food and Drug Administration. Drugs@FDA. Stadol injection: discontinued. Accessed December 26, 2014 from http://www.accessdata.fda.gov/scripts/cder/drugsatfda/index.cfm?fuseaction=Search.Overview&DrugName=STADOL

U.S. Food and Drug Administration. Drugs@FDA. Stadol preservative free injection: discontinued. Accessed December 26, 2014 from http://www.accessdata.fda.gov/scripts/cder/drugsatfda/index.cfm?fuseaction=Search.DrugDetails

Personal Communication on December 29, 2014. Bristol Myers Squibb Pharmaceuticals: Customer Service phone 800-321-1335. Stadol injection: discontinued 2008.

Butorphanol tartrate injection. Hospira. Accessed December 26, 2014 from http://www.hospira.com/Images/EN-0448_81-5385_1.pdf

Butorphanol. Micromedex 2.0. Truven Health Analytics. Accessed December 26, 2014 from http://www.micromedexsolutions.com/micromedex2/librarian/