* SDI's Vector One®: Payer, for the six month period ending August 2008. Out-of-pocket cost is the portion of the prescription cost that the patient is required to pay. These data include patients who pay the entire cost of their prescription and those who receive coverage via private insurance, Medicaid, or Medicare. VA and mail order co-pays are not included. Lower out of pocket costs to patients do not necessarily reflect a cost savings to providers. Products that are subject of a price comparison are not known to have comparable efficacy and safety.