there is a website called www.needymeds.org maybe you could find help through that site look up the medicine and it should tell you hope this helps
You may want to go this online pharmacy located in Blaine, WA
http://www.americapharmacy.com/index.cfm/fuseaction/productcategory.prescription/product_letterfilter/A.htm
They have 50 Asacol 400mg pills for $30
You need to get him to increase Magnesium in his body so check my other post made today to see what will help with this Inflammation of the colon.......