Norcoâ 729 (norco 325â mg â 7.5â mg) generic name: acetaminophenhydrocodone. Pill imprintâ norcoâ 729 has been identified asâ norco 325â mg â 7.5â mg.â norcoâ is used in the treatment of back pain; pain; rheumatoid arthritis and belongs to the drug class narcotic analgesic combinations.