An herbal formula containing cinnamon, paeonia, moutan, persica and hoelen significantly reduced brain cell death in rats following a stroke. The researchers found significant anti-inflammatory effects of the combination.
 
J Pharmacol Sci. 2007 Sep;105(1):34-40. Protective effects of guizhi-fuling-capsules on rat brain ischemia/reperfusion injury. Li TJ, Qiu Y, Mao JQ, Yang PY, Rui YC, Chen WS.