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Doctors on the differences of Zyrtec vs. Claritin, ... Adults and children aged six and up should take one 10 milligram tablet of Zyrtec a day, according to the company that makes the drug.
Cetirizine is a second-generation antihistamine used to treat allergic rhinitis (hay fever), dermatitis, and urticaria (hives). [5] It is taken by mouth. [6] Effects generally begin within thirty minutes and last for about a day. [6]
Loratadine, sold under the brand name Claritin among others, is a medication used to treat allergies. [5] This includes allergic rhinitis (hay fever) and hives . [ 5 ] It is also available in drug combinations such as loratadine/pseudoephedrine , in which it is combined with pseudoephedrine , a nasal decongestant . [ 5 ]
[22] [27] Subsequently, other non-sedating antihistamines like loratadine (Claritin), cetirizine (Zyrtec), and fexofenadine (Allegra) were developed and introduced. [22] The introduction of the first-generation antihistamines marked the beginning of medical treatment of nasal allergies. [28]
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.
Pseudoephedrine, one of the naturally occurring alkaloids of ephedra, is a sympathomimetic used as a decongestant. [ medical citation needed ] It produces a decongestant effect that is facilitated by the vasoconstriction in the mucosal capillaries of the upper respiratory areas.