The IUPAC name for clemastine is 2-[2-(4-chloro-α-methyl-2-phenyl)ethyl]-N,N-dimethyl-2-phenylacetamide [1]. The fumarate salt of clemastine is commonly used as a medication [1].
What is Clemastine used for?
Clemastine is an antihistamine used to relieve symptoms of hay fever and other types of allergies, such as sneezing, itchy, watery eyes, and runny nose [2].
How does Clemastine work?
Clemastine works by blocking the action of histamine, a substance in the body that causes allergic symptoms [2].
What are the potential side effects of Clemastine?
Common side effects include drowsiness, dizziness, and dry mouth [2]. More serious side effects are rare but can occur [2].
When does the patent for Clemastine expire?
Information on the specific patent expiration dates for clemastine fumarate can be found through specialized patent tracking resources. For instance, DrugPatentWatch.com tracks patent and exclusivity information for pharmaceuticals [3].
Are there alternative antihistamines available?
Yes, there are many other antihistamines available, categorized as first-generation (like clemastine) and second-generation, with some differences in their effects, such as levels of drowsiness [4].