It is 2.5% amprolium so should work like powdered corid except that the corid powder is 20% so the amounts would have to be adjusted accordingly.
http://www.revivalanimal.com/Cocci-Rid.html
Since he's gone, you could have a sale and sell off all the stuff that is in the way.
The directions on the bottle say one tsp with 1 lb of feed for two weeks. Good for pet/exotic poultry and racing pigeons. Was wondering if there was anything more specific or any awarness of any general concerns of its use.