No, Norco doesn't interact with Harvoni at all. In fact, most Morphine doesn't either. You can relax and start tx. Here's a website you can check, it's a UK website. Unfortunately the American websites suck. Of course in the UK they don't call Norco by the same name so I checked both Paracetemol and Hydrocodone, no interactions for either. good luck
http://hep-druginteractions.org/checker
Hi, I just checked on drugs ******* and did not see any interactions. Of course you should always check with your doctor however it is Saturday so wanted to let you know I did not see anything
I hope your back feels better, take care, Dee