It is important to note the Latin name of the skullcap being used as over 200 varieties exist, some used for various ailments, each with varying degrees of effectiveness. Sometimes, Scutellaria lateriflora (North American skullcap) is mistaken for S. baicalensis. This confusion can result in the intake of the S. lateriflora variety which is often processed and contaminated with other plants with high enough levels of toxicity to be of concern.
^Zhang XW, Li WF, Li WW, Ren KH, Fan CM, Chen YY, Shen YL (2011). "Protective effects of the aqueous extract of Scutellaria baicalensis against acrolein-induced oxidative stress in cultured human umbilical vein endothelial cells". Pharm Biol49 (3): 256–261. doi:10.3109/13880209.2010.501803. PMID20979538.
^Isolation and purification of baicalein, wogonin and oroxylin A from the medicinal plant Scutellaria baicalensis by high-speed counter-current chromatography. Hua-Bin Li and Feng Chen, Journal of Chromatography A, 13 May 2005, Volume 1074, Issues 1–2, pages 107–110, doi:10.1016/j.chroma.2005.03.088