Amends the Accident and Health Article of the Illinois Insurance Code. Provides that an insurer that provides coverage for prescription insulin drugs pursuant to the terms of a health coverage plan the insurer offers shall limit the total amount that an insured is required to pay for a 30-day supply of covered prescription insulin drugs at an amount not to exceed $35 (rather than $100). Provides that on January 1 of each year, the limit on the amount that an insured is required to pay for a 30-day supply of a covered prescription insulin drug may increase to an amount that shall not exceed the maximum cost-sharing amount for covered insulin products of a plan subject to regulation under the Medicare prescription drug benefit program (rather than shall increase by a percentage equal to the percentage change from the preceding year in the medical care component of the Consumer Price Index of the Bureau of Labor Statistics of the United States Department of Labor). Effective immediately.