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Hydroxyzine, sold under the brand names Atarax and Vistaril among others, is an antihistamine medication. [8] It is used in the treatment of itchiness, anxiety, insomnia, and nausea (including that due to motion sickness). [8] It is used either by mouth or injection into a muscle. [8] Hydroxyzine works by blocking the effects of histamine. [9]
Hydroxyzine: 25–100 mg 2 hours 20 hours ADH, CYP3A4, others No Doxepin: 3–6 mg 2–3 hours 17 hours c: CYP2D6, others No (at low doses) Mirtazapine: 7.5–15 mg 2 hours 20–40 hours CYP2D6, others No Quetiapine e: 25–200 mg 1.5 hours 7 hours d: CYP3A4 No (at low doses) Footnotes: a = For sleep/sedation. b = In adults.
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.
An H 3 receptor antagonist is a type of antihistaminic drug used to block the action of histamine at H 3 receptors.. Unlike the H 1 and H 2 receptors which have primarily peripheral actions, but cause sedation if they are blocked in the brain, H 3 receptors are primarily found in the brain and are inhibitory autoreceptors located on histaminergic nerve terminals, which modulate the release of ...
Hydroxyzine and secobarbital lengthen the half-life of brallobarbital. Because of this long half-life, it has symptoms resembling a hangover on the next day. [2] [3]
A 10 mg dose of cetirizine equals about a 30 mg dose of hydroxyzine in terms of peripheral antihistamine effect.) [30] PET studies with antihistamines have found that brain H 1 receptor occupancy of more than 50% is associated with a high prevalence of somnolence and cognitive decline, whereas brain H 1 receptor occupancy of less than 20% is ...
Not only that, “too much force can lodge mucus into your Eustachian tube—which connects the back of your nose, throat, and ear—and trigger a potential ear infection,” Dr. Parikh says.
It was a combination of theophylline, ephedra, [1] and hydroxyzine, and taken by mouth. [ 2 ] [ 3 ] It is no longer manufactured in the US due to approval of ephedra being withdrawn by the FDA . [ citation needed ]