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Benadryl is a brand name for a number of different medications to relieve allergies and coughs. It usually contains antihistamine diphenhydramine. In the United Kingdom, it contains either the antihistamine acrivastine or the long-acting antihistamine cetirizine. Benadryl products are sold in Australia and New Zealand as a cough medicine and do not contain any antihistamine.[1][2]


  1. "How much Benadryl can I give my dog". Retrieved 16 January 2016.
  2. Benadryl for the Family Chesty Cough & Nasal Congestion Oral Liquid ; accessed Oct. 13, 2011