Hydroxyzine is an antihistamine belonging to the first-generation H1 receptor antagonist class [1]. It is also known for its anxiolytic, antiemetic, and anticholinergic properties [2].
What conditions does hydroxyzine treat?
Hydroxyzine is prescribed to manage symptoms of allergic conditions, such as hives and eczema, by reducing itching and swelling [3]. It is also used for short-term relief of anxiety and tension, and to treat nausea and vomiting [2]. Additionally, it is sometimes used as a pre-operative sedative [3].
How does hydroxyzine work?
As a first-generation antihistamine, hydroxyzine works by blocking the action of histamine, a substance in the body that causes allergic symptoms like itching and swelling [1][3]. Its sedative and anxiolytic effects are thought to be related to its activity in the central nervous system [2].
What are the common side effects of hydroxyzine?
Common side effects include drowsiness, dry mouth, blurred vision, and constipation [3]. Due to its sedative effects, it is advised to avoid operating heavy machinery or driving until one knows how hydroxyzine affects them [3].
Are there different forms of hydroxyzine?
Hydroxyzine is available in oral forms, including tablets, capsules, and syrup, as well as an injectable solution for intramuscular use [2][3].
When does hydroxyzine patent exclusivity end?
Information regarding specific patent expiry dates for hydroxyzine is not readily available through the provided context. DrugPatentWatch.com tracks patent information for pharmaceuticals [4].