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Dose a Time to peak Half-life b Metabolism Anticholinergic Diphenhydramine: 50 mg 2–3 hours 2–9 hours CYP2D6, others Yes Doxylamine: 25 mg 2–3 hours 10–12 hours CYP2D6, others Yes 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 ...
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]
Depending on the type of allergen causing it, the rash can ooze, drain or crust and it can become raw, scaled or thickened. Also, it is possible that the skin lesion does not take the form of a rash but it may include papules, blisters, vesicles or even a simple red area. The main difference between the rash caused by allergic contact ...
The most common antihistamines utilized for this purpose include hydroxyzine, promethazine (enzyme induction especially helps with codeine and similar prodrug opioids), phenyltoloxamine, orphenadrine, and tripelennamine; some may also have intrinsic analgesic properties of their own, orphenadrine being an example.
Children affected by allergies in the developed world: [2] 1 in 13 have eczema; 1 in 8 have allergic rhinitis; 3-6% are affected by food allergy; Children in the United States under 18 years of age: [3] Percent with any allergy: 27.2%; Percent with seasonal allergy: 18.9%; Percent with eczema: 10.8%; Percent with food allergy: 5.8%
Hives, also known as urticaria, is a kind of skin rash with red and/or flesh-colored, raised, itchy bumps. [1] Hives may burn or sting. [ 2 ] The patches of rash may appear on different body parts, [ 2 ] with variable duration from minutes to days, and do not leave any long-lasting skin change. [ 2 ]
A positron emission tomography (PET) study found that brain occupancy of the H 1 receptor was 12.6% for 10 mg cetirizine, 25.2% for 20 mg cetirizine, and 67.6% for 30 mg hydroxyzine. [29] (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 ...
A vaccination schedule is a series of vaccinations, including the timing of all doses, which may be either recommended or compulsory, depending on the country of residence. A vaccine is an antigenic preparation used to produce active immunity to a disease , in order to prevent or reduce the effects of infection by any natural or "wild" pathogen ...