So my canned Tuna and SPAM
IS Good Well past the
“Best By..” Date?
SPAM isn't good before the "best buy" date so let's just go with most every canned product is edible long past the date. Canned foods, even meats, don't have to be heated so can be eaten right from the can.
Medicines are also good past the expiration date (YMMV) though may lose potency. Don't be like that mother in the news who let her son die because his epi pen had just expired.