An AB rating means that the FDA has determined that a generic medication is equivalent to a brand-name medication. All of the generic versions of Detrol LA currently available have an AB rating, meaning they should be equivalent to the brand-name product.
The general rule of thumb is that canned food has a shelf life of at least two years from the date of purchase. It is recommended that all canned food be stored in moderate temperatures (75Â° F and below). Many canned products now have a for best quality use by date stamped on the top or bottom of the can.
How long do canned meats last? Canned meats can last for years beyond their best by dates. How long does spam last? The shelf life of canned meat depends on a variety of factors, such as the best before date, the preparation method and how the canned meats are stored. Since fresh meats have rather short shelf lives, canned meats like spam and chicken prove practical to have on hand and available at any time.