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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. [11] [2] Diphenhydramine is also a potent anticholinergic. [12]
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 ...
Some forms of Benadryl are to be taken orally, while some creams and gels are to be applied to the skin. [2] Common side effects of the drug include drowsiness, dizziness, dry mouth and throat, confusion, and blurred vision. [2] In the United States and Canada, the active ingredient is diphenhydramine.
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 ...
The first-generation sedating antihistamines diphenhydramine, doxepin, doxylamine, and pyrilamine are the most widely used medications in the world for preventing and treating insomnia. [6] As of 2004, doxylamine and diphenhydramine, which are both over-the-counter medications, were the agents most commonly used to treat short-term insomnia. [11]
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Mirtazapine (tetracyclic antidepressant, also has antiemetic and appetite-stimulating effects; trade name: Remeron) Olanzapine (atypical antipsychotic; trade name: Zyprexa) Olopatadine (used locally) Orphenadrine (a close relative of diphenhydramine used mainly as a skeletal muscle relaxant and anti-Parkinsons agent)
Medications are used to reverse the symptoms of extrapyramidal side effects caused by antipsychotics or other drugs, by either directly or indirectly increasing dopaminergic neurotransmission. The treatment varies by the type of the EPS, but may involve anticholinergic agents such as procyclidine, benztropine, diphenhydramine, and trihexyphenidyl.