http://www.aetna.com/faqs-health-insurance/pharmacy-preferred-drug-plan-brand-generic-faqs.html
Aetna Preferred drug list
https://www.aarpmedicareplans.com/health-plans/medicare-advantage-plans/drug-list.html
AARP drug list
http://coventry-medicare.coventryhealthcare.com/first-health-part-d/formulary/index.htm
Coventry list
http://www.medco.com/medco/consumer/druglistdirect/entryPage.jsp?formid=00537&prefaltid=00538
Medco's list
http://www.humana.com/group_health_insurance/drugs/prescription_tools/drug_list.aspx
Humana's list
http://www.dss.mo.gov/mhd/cs/pharmacy/pages/clinedit.htm
Mo healthnet preferred list
http://www.careimprovementplus.com/members/formulary--medicare-drug-plan-coverage.aspx
Care improvement plus formulary and PA forms
http://www.walmart.com/cp/PI-4-Prescriptions/1078664
Wal Mart's $4 list
Aetna Preferred drug list
https://www.aarpmedicareplans.com/health-plans/medicare-advantage-plans/drug-list.html
AARP drug list
http://coventry-medicare.coventryhealthcare.com/first-health-part-d/formulary/index.htm
Coventry list
http://www.medco.com/medco/consumer/druglistdirect/entryPage.jsp?formid=00537&prefaltid=00538
Medco's list
http://www.humana.com/group_health_insurance/drugs/prescription_tools/drug_list.aspx
Humana's list
http://www.dss.mo.gov/mhd/cs/pharmacy/pages/clinedit.htm
Mo healthnet preferred list
http://www.careimprovementplus.com/members/formulary--medicare-drug-plan-coverage.aspx
Care improvement plus formulary and PA forms
http://www.walmart.com/cp/PI-4-Prescriptions/1078664
Wal Mart's $4 list
http://www.hy-vee.com/docs/400list_category90.pdf
Hy Vee $4 list
Hy Vee $4 list