Acetaminophen / hydrocodone
"Norco 10/325 has worked well for me. I started using Vicodin 500 mg, which I got immune to very quickly. My doctor switched me to Norco 500 mg. Also got immune to this. So they put me on Norco 10/325 and I haven't had any problems since then. They work wonderfully. I take them every 4 hours. That's been 2 years ago."