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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.
Diphenhydramine, available in various salt forms, [73] such as citrate, [74] [75] hydrochloride, [76] and salicylate, [77] exhibits distinct molecular weights and pharmacokinetic properties. Specifically, diphenhydramine hydrochloride and diphenhydramine citrate possess molecular weights of 291.8 g/mol [ 78 ] and 447.5 g/mol , [ 79 ] respectively.
Clinically, H 1-antihistamines are used to treat allergic reactions and mast cell-related disorders. Sedation is a common side effect of H 1-antihistamines that readily cross the blood–brain barrier; some of these drugs, such as diphenhydramine and doxylamine, may therefore be used to treat insomnia.
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 ...
Dimenhydrinate is a theoclate salt composed of diphenhydramine and 8-chlorotheophylline (a theophylline relative) in a 1:1 ratio. [ 2 ] Dimenhydrinate was introduced to the market by G.D. Searle in 1949.
Diphenhydramine hydrochloride is also marketed as an antihistamine in Canada under the same name, and is only listed in the Canadian Agricultural database for equine use. [5] However, a 2019 manual for counseling professionals in Canada included Sominex as a medicine to be used for the treatment of Parkinson's tremors and stiffness related to ...
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