TUZISTRA XR (codeine polistirex and chlorpheniramine polistirex) extended-release oral suspension, CIII. Vernalis Therapeutics, Inc. Accessed May 28, 2015 from http://www.vernalis.com/images/Full_prescribing_information_Tuzistra_XR_April2015.pdf
Chlorpheniramine. Lexi-Comp ONLINE, 2015 Lexi-Comp, Inc. Accessed May 28, 2015 from http://online.lexi.com.
Chlorpheniramine. DRUGDEX System. 2015 Truven Health Analytics Inc. Accessed May 28, 2015 from http://www.thomsonhc.com.
Codeine. Lexi-Comp ONLINE, 2015 Lexi-Comp, Inc. Accessed May 28, 2015 from http://online.lexi.com.
Codeine. DRUGDEX® System. 2015 Truven Health Analytics Inc. Accessed May 28, 2015 from http://www.thomsonhc.com.