In addition to any other exemptions provided by law, any items used for the treatment of diabetes purchased by or on behalf of an individual pursuant to a valid prescription shall be exempt from state, county, and municipal sales and use taxes, including, but not limited, to any of the following: Insulin and insulin syringes, and any equipment, supplies, devices, chemical reagents, and any related items that may be used by a diabetic to treat diabetes or to test or monitor blood or urine.