The difference is the amount of APAP, Like the Hydrocodone 5-325 is Norco It has less APAP which is Acetaminophen (Tylenol) . The Hydrocodone 5-500 is Vicodin, and it has the same amount of the Narcotic but more APAP.
2 more days at most
5500mg
5500mg = 5.5g
1000mg =1gram 5500mg =5.5grams
1 gram = 1000 milligrams. You now have all the information required to work out, for yourself, the answer to this and similar questions. 5500mg=5.5g (1000mg=1g)