Non sedating antihistamines otc
Early studies of the first generation antihistamines for the treatment of colds gave negative results because of inadequate precision in recording of cold symptoms.
Nasal decongestants also burn and irritate the throat.
(21-23) Other first generation antihistamines have received various degrees of testing for treatment of the common cold.
The duration of activity varies among the different first generation antihistamines, and sustained-release preparations are available for some.
Decongestants taken by mouth have less powerful and immediate activity but cause less problem with the cycles of recurrent nasal obstruction than topical preparations.
(31) Oral decongestants may produce rapid heart rate, blood pressure elevation, and nervous stimulation.