I am 28 years old and for the past 3 days I have been suffering from a severe back pain. Earlier I was taking diclofenac sodium and paracetamol combination tablet for myself but it caused me gastrointestinal bleeding. Now I have been prescribed a narcotic pain killer. I would like to know for myself as to what is a norco drug? Anyone using a narcotic pain killer who would like to share his/her experiences?