Prinivil. Merck & Co. Accessed January 25, 2016 from http://www.merck.com/product/usa/pi_circulars/p/prinivil/prinivil_pi.pdf
Zestril. AstraZeneca. Accessed January 25, 2016 from http://www1.astrazeneca-us.com/pi/zestrillpv.pdf
Lisinopril. DRUGDEX System. Truven Health Analytics. Accessed 1/28/16 from http://www.thomsonhc.com/micromedex2/