Question, where can I get this in single cans as opposed to a case? I tried 2 local walgreens but neither had it.

CG to mother. Diagnosed with SCC August 08. Surgery Sep 08 to remove right mandible and replace it with fibula from left leg. Also neck dissection with one pos. node. Rad/Chemo with cisplatin completed Nov 30, 2008.
Passed away Dec 15, 2014