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Diphenhydramine, sold under the brand name Benadryl among others, is an antihistamine and sedative. It is a first-generation H 1 -antihistamine and it works by blocking certain effects of histamine , which produces its antihistamine and sedative effects.
The recommended dosage of Benadryl tablets for adults is 1 to 2 tablets every 4 to 6 hours, [1] and only 1 tablet every 4 to 6 hours for children under the age of 12. [2]The Benadryl challenge is an internet challenge that emerged in 2020, revolving around the deliberate consumption, excessive use and overdose of the antihistamine medicine diphenhydramine (commonly sold in the United States ...
Multiple teens have been hospitalized after ingesting up to 14 Benadryl doses at once, inspired by a TikTok challenge aimed at hallucinating. Experts say the activity could be deadly.
Benadryl can also be found in a topical form including gels and creams. Benadryl Itch Stopping Cream is a topical cream used to provide temporary itch relief for allergies, hives or even some insect bites. It can be found in the United States and Canada. This topical medication contains 2% of diphenhydramine hydrochloride and 1% of zinc acetate.
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Unlike a sudden cardiac event—say, a heart attack—valvular disease develops slowly, over five to 10 years. Many patients don’t experience symptoms until later in the course of disease, if at ...
In 2020, the UK National Health Service wrote that "[m]ost people can safely take antihistamines" but that "[s]ome antihistamines may not be suitable" for young children, the pregnant or breastfeeding, for those taking other medicines, or people with conditions "such as heart disease, liver disease, kidney disease or epilepsy". [30]
First-generation antihistamines include diphenhydramine (Benadryl), carbinoxamine (Clistin), clemastine (Tavist), chlorpheniramine (Chlor-Trimeton), and brompheniramine (Dimetane). However, a 1955 study of "antihistaminic drugs for colds," carried out by the U.S. Army Medical Corps, reported that "there was no significant difference in the ...