1. Merck and Co. Inc Singulair® (montelukast sodium) product label http://www.merck.com/product/usa/pi_circulars/s/singulair/singulair_pi.pdf 2014
2. Drugs.com Top 100 drugs for 2011 by sales http://www.drugs.com/top200_2003.html 2014
3. Trends in on-label and off-label prescribing of montelukast in a commercially insured population 1998-2008;Ali;Value Health,2011
4. FDA Early communication about an on-going safety review of montelukast (singulair) http://www.fda.gov/Drugs/DrugSafety/PostmarketDrugSafetyInformationforPatientsandProviders/DrugSafetyInformationforHeathcareProfessionals/ucm070618.htm 2014
5. FDA Follow-up to the march 27, 2008 communication about the on-going safety review of montelukast (singulair) http://www.fda.gov/Drugs/DrugSafety/PostmarketDrugSafetyInformationforPatientsandProviders/DrugSafetyInformationforHeathcareProfessionals/ucm079523.htm 2014