L544 is Arthritis Pain formula acetaminophen extended release tabs 650mg manufactured by Perrigo of Allegan, Michigan. It is a store brand (e.g. Equate) that is supposed to be the equivalent to Tylenol.
Yes, its a new manafacturer as of 2012 that makes it. It is 10mg of hydrocodone and 650mg of acetemetaphin.
544 UK gallons = 2,470 L544 US gallons = 2,060 L