The purpose of this chapter is to improve the health of low-income Iowans and Iowans who have been victims of a state of disaster emergency proclaimed by the governor pursuant to section 29C.6 or a public health disaster as defined in section 135.140, subsection 5 , through a prescription drug donation repository that authorizes medical facilities, pharmacies, and the department to redispense prescription drugs and supplies that would otherwise be destroyed. 2005 Acts, ch 97, §1 ; 2009 Acts, ch 127, §1