Herb Interactions?

I am currently taking zhi bai di huang wan long-term as prescribed by my acupuncturist for yin deficiency symptoms.  Recently, I have also been taking minor bupleureum as an anti-viral because I had mono last month.  I am considering going on birth control pills and am wondering if either of these herbs has interactions with progesterone- and/or estrogen-based birth control pills, or if they reduce effectiveness in preventing pregnancy.  I doubt a western doctor would know the answer to this and would like to make sure I can take both zhi bai and bcp at the same time without risks before I start taking the pill. Tweet