Norco is available in two strengths containing either 7.5 or 10 milligrams of hydrocodone combined with 325 milligrams of acetaminophen, according to RxList. Dosage guidelines depend on the condition being treated, the patient's tolerance and the maximum allowable daily dose of acetaminophen.
The usual adult dose for pain for both formulations of Norco is one tablet every four to six hours, as needed. The maximum recommended daily dose is six tablets a day, as reported by Drugs.com. This represents a total acetaminophen dose of 1,950 milligrams and a total hydrocodone dose of 45 milligrams or 60 milligrams, depending on the Norco formulation. The maximum allowable daily dose of acetaminophen is 4,000 milligrams, notes Drugwatch.