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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 evidence does not report how antihistamines affect women differently than men. [1] Different studies have reported on antihistamine use in children, with various studies finding evidence that certain antihistamines could be used by children 2 years of age, and other drugs being safer for younger or older children.
E-triprolidine, for example, is 1000-fold more potent than Z-triprolidine. This difference relates to the positioning and fit of the molecules in the histamine H 1 -receptor binding site. [ 15 ] Alkylamines are considered to have relatively fewer sedative and gastrointestinal adverse effects, but relatively greater incidence of paradoxical ...
“Aside from cardiac-specific medications, some medications for thyroid conditions and migraines can also affect your resting heart rate,” she notes. Talk to your doctor about whether ...
Chronotropic effects (from chrono-, meaning time, and tropos, "a turn") are those that change the heart rate. Chronotropic drugs may change the heart rate and rhythm by affecting the electrical conduction system of the heart and the nerves that influence it , such as by changing the rhythm produced by the sinoatrial node .
Class III agents affect potassium (K +) efflux. Class IV agents affect calcium channels and the AV node. Class V agents work by other or unknown mechanisms. With regard to management of atrial fibrillation, classes I and III are used in rhythm control as medical cardioversion agents, while classes II and IV are used as rate-control agents.
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 is the primary constituent of dimenhydrinate and dictates the primary effect. The main differences relative to pure diphenhydramine are a lower potency due to being combined with 8-chlorotheophylline (by weight, dimenhydrinate is between 53% and 55.5% diphenhydramine) [10] and the fact that the stimulant properties of 8-chlorotheophylline help reduce the side ...