CHICAGO (WLS) -- A recent change to the Illinois Medicaid prescription plan is making it difficult for many to get medications, especially on Chicago's South and West sides. It is a potential dilemma for millions in Illinois. Two months ago, Medicaid clients were told they could no longer use Walgreens unless they wanted to pay full price for their prescriptions. New legislation is calling for Medicaid recipients to be able to use any pharmacy. But in the meantime, some patients are struggling to access what could be life-saving drugs. Aetna provides coverage for Illinois Medicaid patients. In December, Aetna changed the prescription plan, dropping Walgreens as a provider. Walgreens makes up 30% of all Chicago's drugstores. Because Aetna is owned by CVS, Medicaid patients now have to get their medications at CVS and other in-network pharmacies.