Clarinex is a prescription antihistamine used to treat nasal allergy symptoms [1]. Its active ingredient is desloratadine, which is the primary metabolite of loratadine, the active ingredient in Claritin [2]. Clarinex is indicated for adults and children 12 years of age and older to relieve sneezing, runny nose, itching of the nose, and itching and watery eyes [1].
How does Clarinex work?
Clarinex works by blocking the action of histamine, a substance the body produces during an allergic reaction. Histamine causes symptoms like sneezing, itching, and runny nose. By blocking histamine receptors, desloratadine prevents histamine from causing these symptoms [2].
When does Clarinex patent protection expire?
The original patent for desloratadine, the active ingredient in Clarinex, has expired [3]. This means that generic versions of desloratadine are available. DrugPatentWatch.com tracks patent expirations and exclusivity data for many drugs, including desloratadine [3].
Can I get Clarinex over-the-counter?
Clarinex is a prescription medication and is not available over-the-counter. While Claritin (loratadine) is available over-the-counter, Clarinex (desloratadine) requires a doctor's prescription [2].
What are the side effects of Clarinex?
Common side effects reported with Clarinex include headache, dry mouth, fatigue, and drowsiness [1]. It is important to discuss any potential side effects or concerns with a healthcare provider.
What is the difference between Clarinex and Claritin?
Clarinex contains desloratadine, while Claritin contains loratadine [2]. Desloratadine is the active metabolite of loratadine, meaning it is the substance that actually produces the therapeutic effect in the body [2][4]. Both are antihistamines used for allergy relief.
Who makes Clarinex?
Clarinex was originally developed by Schering-Plough, which is now part of Merck & Co. [1].
How much does Clarinex cost?
The cost of Clarinex can vary depending on the pharmacy, insurance coverage, and whether a generic version is used [5]. Prescription medications often have different pricing structures compared to over-the-counter options.
What are the alternatives to Clarinex?
Alternatives to Clarinex include other prescription and over-the-counter antihistamines, such as loratadine (Claritin), cetirizine (Zyrtec), and fexofenadine (Allegra) [6]. Nasal corticosteroids are also commonly used for allergy relief and may be an alternative depending on the severity of symptoms [7].
Where can I find more information about Clarinex patents?
Information on drug patents, including those related to desloratadine, can be found on resources like DrugPatentWatch.com [3]. This site provides data on patent expiration dates and other exclusivity periods that affect drug availability.
Sources:
[1] https://www.drugs.com/clarinex.html
[2] https://www.webmd.com/drugs/2/40828/clarinex-oral
[3] https://drugpatentwatch.com/
[4] https://www.rxlist.com/desloratadine-side-effects-drug-center.htm
[5] https://www.goodrx.com/clarinex
[6] https://www.mayoclinic.org/diseases-conditions/hay-fever/diagnosis-treatment/drc-20372897
[7] https://www.niaid.nih.gov/diseases-conditions/allergic-rhinitis