解充血药

例句：

1. 1. The doctor prescribed a medicine to relieve my headache.
   医生开了一种药来缓解我的头痛。
2. 2. I took the medicine as directed and felt much better after a few hours.
   我按照指示服用了这种药，几个小时后感觉好多了。
3. 3. The patient was given an antihistamine to help with his allergies.
   病人被开了抗组胺药来帮助他的过敏症状。