What is the need of antihistaminic in cold and cough treatment?
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Hello, What is the need of antihistaminic in cold and cough treatment? Why doctors prescribe it? I would like to understand the mechanism of action. Please elaborate on this and help me understand.
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@satish Some types of them can help relieve your runny nose and sneezing when you have a cold. They block a chemical your body makes called histamine that makes the tissues in your nose itch and swell. Most experts say that histamine isn't the major cause of a runny nose when you have a cold. Even so, some of the older antihistamines, such as brompheniramine and chlorpheniramine, can bring relief. Newer antihistamines like fexofenadine (Allegra) and loratidine (Claritin) have not been shown to work for cold symptoms.