The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From University of South Carolina:
With the official University of South Carolina Pharmacy iPhone app, you can order your refill prescriptions from your Apple iPhone. Simply enter your prescription number, first and last name, and phone number - then click the refill button. And to save your personal information for easier use each time you want to refill a prescription, you can create a user profile using a secure login. There is no charge to download the app. Look for future enhancements to the iPhone app for the University of South Carolina Pharmacy.