Benadryl is a brand name for a number of different H1 antagonist antihistamine medications. In the United States and Canada, it is the first-generation antihistamine diphenhydramine. In the United Kingdom, the active component of Benadryl Allergy Relief is the antihistamine acrivastine, and the active component of Benadryl One a Day Relief is the long-acting antihistamine cetirizine. Some products marketed in Australia and New Zealand as a cough medicine with the Benadryl name contain diphenhydramine.
Benadryl is available for by mouth or topical use. It is marketed without a prescription by Johnson & Johnson subsidiary McNeil Consumer Healthcare. Before 2007, Benadryl was marketed by Pfizer Consumer Healthcare. Benadryl Chesty Cough & Nasal Congestion contains guaifenesin (an expectorant) and pseudoephedrine hydrochloride as the active ingredients.
- "Benadryl Allergy Relief - Summary of Product Characteristics". eMC. 21 May 2016. Retrieved 11 December 2016.
- "Benadryl Allergy One A Day 10mg Tablets - Summary of Product Characteristics". eMC. 11 November 2015. Retrieved 11 December 2016.
- "ARTG, PI and CMI results searching for Benadryl". Department of Health Therapeutic Goods Administration, Australia.
- "Johnson & Johnson to Acquire Pfizer Consumer Healthcare" (Press release). Johnson & Johnson. June 26, 2006. Retrieved November 19, 2009.
- "Johnson & Johnson Completes Acquisition Of Pfizer Consumer Healthcare" (Press release). Johnson & Johnson. December 20, 2006. Retrieved November 19, 2009.
- Benadryl for the Family Chesty Cough & Nasal Congestion Oral Liquid ; accessed Oct. 13, 2011
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