[Lotus]

I don't see any scientific literature listed from webmd of reishi harming the liver. Mutiple studies indicate reishi is hepatoprotective, prevents cancer, improves immune function and many other benefits.
  

A 2013 study published in the International Journal of Medicinal Mushrooms found that reishi induces hepatoprotective effects on acute liver injury because it contains antioxidant properties and fights harmful immune responses that slow down liver function. 

https://www.ncbi.nlm.nih.gov/m/pubmed/23796220/

http://www.superfoods-scientific-research.com/superfoods/use-of-reishi-in-treating-liver-disease.html