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Furthermore, first-generation antihistamines, such as chlorpheniramine, have proven to be safe in pregnancy and can be a supplement treatment for pruritus. [9] [31] Second-generation antihistamines such as loratadine and cetirizine are non-sedating and may also be effective in controlling pruritus in pregnant people. [32]
Second generation antihistamines include loratadine (Claritin), cetrizine (Zyrtec), and fexofenadine (Allegra). [12] First generation antihistamines have the ability to cross the blood-brain barrier which can result in sedative and anticholinergic effects while effectively treating allergic reactions and nausea and vomiting related to pregnancy ...
Antihistamines are drugs which treat allergic rhinitis, common cold, influenza, and other allergies. [1] Typically, people take antihistamines as an inexpensive, generic (not patented) drug that can be bought without a prescription and provides relief from nasal congestion, sneezing, or hives caused by pollen, dust mites, or animal allergy with few side effects. [1]
Fexofenadine is used for relief from physical symptoms associated with seasonal allergic rhinitis and for treatment of hives, including chronic urticaria. [12] It does not cure, but rather prevents the aggravation of allergic rhinitis and chronic idiopathic urticaria, and reduces the severity of the symptoms associated with those conditions, providing relief from repeated sneezing, runny nose ...
Use in pregnancy and breastfeeding is generally not recommended. [10] It is a typical antipsychotic which is believed to work by reducing the action of dopamine in the brain. [6] Prochlorperazine was approved for medical use in the United States in 1956. [6] It is available as a generic medication. [7]
Chlorphenamine (CP, CPM), also known as chlorpheniramine, is an antihistamine used to treat the symptoms of allergic conditions such as allergic rhinitis (hay fever). [2] It is taken orally (by mouth). [2] The medication takes effect within two hours and lasts for about 4–6 hours. [2]
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[4] [5] Use is not recommended during pregnancy. [2] Xylometazoline is in the decongestant and alpha-adrenergic agonist families of medication. [5] [6] One study classified it with selectivity ratios in alpha 2 adrenergic receptors of 151 for a2A vs a2B, 4.5 a2A vs a2C, and 33.9 a2B vs a2C. Making it a highly selective a2A agonist. [7]