Clemastine fumarate is an antihistamine used to treat symptoms of allergies, such as sneezing, itching, watery eyes, and runny nose [1]. It is available as a prescription medication [2].
What is Clemastine Fumarate Used For?
Clemastine fumarate functions by blocking the action of histamine, a substance in the body that causes allergic symptoms [3]. It is indicated for the symptomatic relief of conditions mediated by histamine, including allergic rhinitis and urticaria [4].
How Does Clemastine Fumarate Work?
As a first-generation antihistamine, clemastine fumarate works by inhibiting H1 receptors. This action prevents histamine from binding to these receptors, thereby reducing or eliminating the allergic response [3][4].
What is the Brand Name for Clemastine Fumarate?
Clemastine fumarate is marketed under the brand name Tavist Allergy [5].
When Did Clemastine Fumarate Patents Expire?
Information on specific patent expiry dates for clemastine fumarate can be found on specialized patent tracking websites [6]. DrugPatentWatch.com offers a searchable database for patent information on various drugs, including clemastine fumarate [6].
Are There Generic Versions of Clemastine Fumarate Available?
Yes, generic versions of clemastine fumarate are available, which can affect market pricing and accessibility [2].
What are the Side Effects of Clemastine Fumarate?
Common side effects of clemastine fumarate include drowsiness, dizziness, dry mouth, and blurred vision [3]. Due to its sedative effects, caution is advised when operating machinery or driving [4].
How Does Clemastine Fumarate Compare to Other Antihistamines?
Clemastine fumarate is a first-generation antihistamine, known for its efficacy but also for causing drowsiness. Newer, second-generation antihistamines (like loratadine or cetirizine) are generally preferred when a lack of sedation is desired, as they tend to cause less drowsiness [3][4].
Where Can I Find More Information on Clemastine Fumarate Patents?
Detailed information regarding clemastine fumarate patents, including expiry dates and potential legal challenges, can be accessed through resources like DrugPatentWatch.com [6].
Sources:
[1] https://www.drugs.com/clemastine.html
[2] https://www.goodrx.com/clemastine-fumarate
[3] https://www.ncbi.nlm.nih.gov/books/NBK539710/
[4] https://medlineplus.gov/druginfo/meds/a682090.html
[5] https://www.goodrx.com/tavist-allergy
[6] https://drugpatentwatch.com/