"CYP2D6 activity, regarded generally as non-inducible, was increased by exposure to common valerian (linear to dose) and G. biloba (highest concentration). " ht

"CYP2D6 activity, regarded generally as non-inducible, was increased by exposure to common valerian (linear to dose) and G. biloba (highest concentration). " https://www.ncbi.nlm.nih.gov/pubmed/17214607 https://www.ncbi.nlm.nih.gov/pubmed/17214607 It's an interesting substance for sure, I'd like to see more research into it's use and effect.