Norco exists as the best pain killer bound with fewer side effects if used in a directed manner. As per its chemical configuration. It contains the two active elements, i.e., acetaminophen and hydrocodone. Both active elements are in different ratios, such as hydrocodone, in 325mg, whereas acetaminophen is 10mg. Hydrocodone is an opioid painkiller and functions to treat the adults' ongoing moderate to severe pain. In contrast, acetaminophen is a non-opioid pain killer and works to treat fever to stabilize the body.