Conclusion Components in Angong Niuang Pulvis can reduce solubility of arsenic in Realgar, which may reduce toxicity of arsenic.

• 结论安宫牛黄散中的几种单味药均有抑制雄黄中可溶性砷溶出的作用，推测是降低砷的毒性作用的可能途径之一。