The drug Cetirizine is available in Canada for the treatment of allergic rhinitis and chronic idiopathic urticaria [1]. It is an antihistamine that works by blocking the effects of histamine, a substance in the body that causes allergic symptoms [2].
What other names is Cetirizine sold under in Canada?
Cetirizine is marketed under several brand names in Canada, including Reactine and Zyrtec [3, 4]. It is also available as a generic medication [1].
How does Cetirizine work for allergies?
Cetirizine is a second-generation antihistamine. It selectively inhibits peripheral H1 receptors [2]. This action prevents histamine from binding to these receptors, thereby reducing allergy symptoms such as sneezing, runny nose, itchy eyes, and hives [2, 5].
When might Cetirizine patents expire in Canada?
Information on specific patent expiry dates for Cetirizine in Canada is available through specialized patent databases. For instance, DrugPatentWatch.com tracks patent information for pharmaceuticals, which can provide details on when exclusivity for Cetirizine or its formulations may end in Canada [6].
Are there alternatives to Cetirizine for allergy relief in Canada?
Yes, other antihistamines are available in Canada for allergy relief, including Loratadine (Claritin) and Fexofenadine (Allegra) [5]. These medications also work by blocking histamine receptors but may differ in their specific properties and potential side effects [5].
What is the typical dosage of Cetirizine for adults in Canada?
For adults and children 12 years of age and older, the typical recommended dosage of Cetirizine is 10 mg taken once daily [1]. It is important to follow the specific instructions on the product packaging or as advised by a healthcare professional.