Sedating antihistamines and asthma
Antihistamines block the action of histamine, and histamine-related symptoms include: Other symptoms, including post-nasal drip, cough, and nasal congestion may also be caused by histamine, and therefore can be treated by antihistamines.
First generation antihistamines include brompheniramine, diphenhydramine, carbinoxamine, chlorpheniramine, and clemastine.
These antihistamines all have anticholinergic properties, making sedation one of the major side effects.
Therefore, this article will only discuss the newer antihistamines, as described below.
Newer antihistamines, called second-generation antihistamines include: It's important to note that montelukast (Singulair), is not an antihistamine, but rather an antileukotriene medication.
Almost everyone has taken an antihistamine to treat hay fever, itching, to relieve nausea and vomiting, in tablets and syrups used to treat cough and cold symptoms, or as an aid to sleep.