You should also carry an antihistamine pill , such as diphenhydramine ( benadryl , others ) , because the effects of epinephrine are only temporary 你也应该携带抗阻胺剂药片，如苯海拉明（本那君等） ，因为肾上腺素只是起一个临时作用。
2.
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。
