Drug Name Diphenhydramine , Ethanolamine class, histamine receptor type 1 blocker. Has significant anticholinergic and sedative properties that causes some degree of topical anesthesia by impairing the transmission of nerve impulses .

• 药名：苯海拉明，氨基乙醇，组织胺受体1型阻滞剂有显著的抗胆碱能和镇静特性，通过阻碍神经冲动传导引起某种程度的局部麻醉。