Levoxyl. Pfizer. Accessed April 22, 2016 from http://labeling.pfizer.com/ShowLabeling.aspx?id=688
Synthroid. Abbvie. Accessed April 22, 2016 from http://www.rxabbvie.com/pdf/synthroid.pdf
Unithroid. Gemini Laboratories. Accessed April 22, 2016http://www.unithroid.com/assets/pdf/Unithroid_Gemini_PI.pdf
Tirosint. Akrimax Pharmaceuticals. Accessed April 22, 2016 from http://www.tirosint.com/assets/2014/07/Tirosint-Promo-PI.pdf
Levothyroxine. DRUGDEX® System. Truven Health Analytics. Accessed 4/26/16 from http://www.micromedexsolutions.com/micromedex2/