Chaga and Coumadin?

[sweetmarie]

I've read recently about the excellent health benefits from Chaga (a type of mushroom that grows on white birch trees after they've died). You make tea from it. Wondering if anybody knows and has used it while being on Coumadin?

 

[clay_from_nj]

Sounds like it might enhance the effect of warfarin: http://www.ncbi.nlm.nih.gov/pubmed/16289471.