+ In experimental study: it provides the results of Hoangkinhs toxicity and its effects of analgesic and anti-inflammatory as following: Regarding acute toxicity and semi-chronic toxicity of Hoang kinh: Acute toxicity: with the dose of 620, 25g Hoang kinh / kg mouse weight (its maximum dose used in mouse, equal to dose of 64.61 times higher than one used in human), LD50 cant be determined.