BHT and some herbs OSCAR?

I was just diagnosed Hep C. I plan to get on Harvoni as soon as possible but may take a while. In the mean time I want to start using BHT and plan to continue on that whenever I start on Harvoni. I am currently using Barefoot herbalists Lower Bowel Balance to address my constipation issues which is working well for me. These herbs target bowel function and I really need them. As far as I'm concerned, if your not eliminating, everything else can go out the window. I can see why Milk Thistle, a protectant to the liver could interfere with BHT doing it's thing for the liver, but would herbs specific for the bowel function be a problem?