Claritin is an antihistamine medication used to relieve allergy symptoms such as sneezing, runny nose, itchy throat, and watery eyes [1]. It is available over-the-counter and by prescription [2]. The active ingredient in Claritin is loratadine [3].
How does Claritin work?
Claritin is a second-generation antihistamine. It works by blocking the effects of histamine, a substance released by the body during an allergic reaction [4]. Histamine causes many of the common allergy symptoms. Loratadine specifically targets H1 receptors, preventing histamine from binding to them and triggering the allergic response [4][5]. Unlike older antihistamines, loratadine is less likely to cause drowsiness because it does not readily cross the blood-brain barrier [5].
When does Claritin's patent expire?
The original patent for loratadine, the active ingredient in Claritin, expired in 2002 [6]. This allowed for the introduction of generic versions of the drug [7].
What are the generic alternatives to Claritin?
Following the patent expiration, numerous generic versions of loratadine became available. These generics offer the same active ingredient and therapeutic effect as brand-name Claritin, often at a lower cost [7]. Examples include products marketed as Loratadine or store-brand allergy medications containing loratadine [3][7].
Who makes Claritin?
The original brand-name Claritin was developed by Schering-Plough, which was later acquired by Merck & Co. [8]. Generic versions of loratadine are manufactured by various pharmaceutical companies [7].
What are the side effects of Claritin?
While generally well-tolerated, Claritin can cause side effects in some individuals. Common side effects include headache, fatigue, and dry mouth [1]. Less common side effects may include dizziness, nausea, or rash [1]. Serious allergic reactions are rare but can occur [1].
How does Claritin compare to other allergy medications?
Claritin (loratadine) is a non-drowsy antihistamine, making it a popular choice for daytime allergy relief. It works by blocking histamine. Other allergy medications include first-generation antihistamines like diphenhydramine (Benadryl), which can cause significant drowsiness [5]. Nasal corticosteroids, such as fluticasone (Flonase), are another class of allergy medication that work by reducing inflammation in the nasal passages and are often used for more persistent symptoms [9].
Can Claritin be used by children?
Claritin is approved for use in children, with specific dosages recommended based on age and weight [1]. Always consult a pediatrician or healthcare provider before administering any medication to a child [1].
What are the risks of taking Claritin?
The risks associated with Claritin are generally low, especially when taken as directed. However, individuals with certain medical conditions or those taking other medications should consult a healthcare professional before use [1]. Potential interactions with other drugs can occur, and caution is advised for those with liver or kidney problems [1].
Sources:
[1] https://www.claritin.com/
[2] https://www.nhs.uk/medicines/loratadine/
[3] https://www.drugs.com/claritin.html
[4] https://www.healthline.com/health/allergies/antihistamines
[5] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5407115/
[6] https://drugpatentwatch.com/
[7] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2999858/
[8] https://www.merck.com/company-overview/
[9] https://www.webmd.com/allergies/nasal-sprays-for-allergies