noun🔗Share苯海拉明 An antihistamine and anticholinergic drug that blocks the effect of histamine at H1 receptor sites, relieving allergy symptoms. Diphenhydramine also reduces smooth muscle contraction, increases heart rate, and sedates the user by blocking muscarinic acetylcholine receptors (mAChRs)."Example Sentence: "I took diphenhydramine last night to help with my allergies, but I felt very drowsy this morning." "我昨晚吃了苯海拉明来缓解过敏症状，但是今天早上感觉非常昏昏沉沉的。medicinecompoundsubstancechemistrybiochemistryphysiologyanatomybiologyChat with AIVocabulary GamePractice Reading
