Often used to treat allergies, antihistamines aren't the best for colds because they dry up nasal membranes and slow the mucus flow that helps rid your nasal passages of germs.
它通常用于过敏的治疗，因其干燥鼻黏膜、降低粘液流动而阻止细菌经鼻排出，不适合用来应对感冒。
Because they work so well, one tends to take too many, and higher doses can cause dry throat and nasal passages, which can be irritating.
但是因为它们太有效，有的人可能一次吃太多，而过高的药量导致喉咙和鼻腔干燥，会有刺激作用。
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