[AnnaZ]

Oh my gosh, how have I never found Google Scholar before?! This is amazing, so much better than regular Google.

Thank you Perry!

[AnnaZ]

^^

Seconding Belassi’s comment. Be careful with adding high concentrations of licorice root extract; you may cause hair loss. I found this article while trying to research the percentage of Glycyrrhizic Acid necessary to achieve an anti-inflammatory effect:

http://www.researchgate.net/publication/262016270_Topically_applied_glycyrrhizic_acid_causes_hair_removal_in_rats

I also came across a discussion of the estrogenic effects of high concentrations of licorice root extract, but I think that was specifically in regards to oral ingestion.