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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 ...
In any case, insomnia is a known side effect of pseudoephedrine, although the incidence is low. [21] In addition, doses of pseudoephedrine above the normal therapeutic range have been reported to produce stimulant effects including insomnia and fatigue resistance. [17]
H 1 antagonists, also called H 1 blockers, are a class of medications that block the action of histamine at the H 1 receptor, helping to relieve allergic reactions.Agents where the main therapeutic effect is mediated by negative modulation of histamine receptors are termed antihistamines; other agents may have antihistaminergic action but are not true antihistamines.
One year later, spending on television drug ads had more than doubled, from $310 million to $664 million. A major early beneficiary was a new generation of antihistamines that did not make people drowsy. Thanks to the advertising push, first Claritin, then Zyrtec and Allegra became some of the most frequently prescribed medications in America.
Rebound insomnia is insomnia that occurs following discontinuation of sedative substances taken to relieve primary insomnia. Regular use of these substances can cause a person to become dependent on its effects in order to fall asleep.
The research which does exist is mostly short-term studies or studies which look at too few people to make general assumptions. [1] Another gap in the research is in information reporting the health effects for individuals with long-term allergies who take antihistamines for a long period of time. [ 1 ]
It contains fexofenadine, as the hydrochloride, an antihistamine; and pseudoephedrine, as the hydrochloride, a nasal decongestant. [ 2 ] In 2021, it was the 279th most commonly prescribed medication in the United States, with more than 800,000 prescriptions.
(from introduction) Fexofenadine, like other second- and third-generation antihistamines, does not readily cross the blood–brain barrier, and so causes less drowsiness than first-generation histamine-receptor antagonists. Side effects The most common side effects are headache, nausea, dizziness, drowsiness and sleepiness;