Cosopt. Merck. Accessed July 29, 2015 from http://www.merck.com/product/usa/pi_circulars/c/cosopt/cosopt_pi.pdf
Cosopt PF. Merck. Accessed July 29, 2015 from http://www.merck.com/product/usa/pi_circulars/c/cosopt_pf/cosopt_pf_pi.pdf
Dorzolamide/Timolol. Micromedex Solutions. Truven Health Analytics. Accessed July 29, 2015 from http://www.micromedexsolutions.com/micromedex2/