The brand name for escitalopram oxalate is Lexapro. [1]
What is Lexapro prescribed for?
Lexapro is a selective serotonin reuptake inhibitor (SSRI) used to treat major depressive disorder (MDD) in adults and adolescents aged 12 to 17 years. It is also indicated for the treatment of generalized anxiety disorder (GAD) in adults. [2]
How does Lexapro work?
Escitalopram works by increasing the levels of serotonin, a neurotransmitter, in the brain. Serotonin is believed to play a role in mood regulation, and imbalances in serotonin levels are associated with depression and anxiety. [2]
When does the patent for Lexapro expire?
The primary patent for escitalopram, held by Lundbeck and Forest Laboratories, expired in October 2012. [3] This patent protected the compound itself. [4]
Are there generic versions of Lexapro available?
Following the expiration of its primary patent, generic versions of escitalopram oxalate became available. [3]
Who manufactures Lexapro and its generics?
The original manufacturer of Lexapro was Lundbeck, with Forest Laboratories (now part of AbbVie) as a partner in its marketing and distribution in the United States. [1][5] Numerous pharmaceutical companies now produce generic versions of escitalopram oxalate. [3]
What are the potential side effects of Lexapro?
Common side effects of Lexapro can include nausea, insomnia, ejaculation disorder, fatigue, and increased sweating. More serious, though less common, side effects can include serotonin syndrome, increased risk of bleeding, activation of mania or hypomania, and seizures. [2]
What should patients know before taking Lexapro?
Patients should inform their doctor about any pre-existing medical conditions, especially a history of bipolar disorder, seizures, or bleeding problems. It is crucial to discuss all current medications and supplements with a healthcare provider to avoid potential drug interactions, particularly with MAO inhibitors, blood thinners, and other serotonergic drugs. [2]
How does escitalopram compare to other SSRIs?
Escitalopram is the S-enantiomer of citalopram, meaning it is a specific isomer of the drug. Clinical studies suggest that escitalopram may be more potent than citalopram and potentially offer a more favorable side-effect profile for some individuals. Like other SSRIs, it works by affecting serotonin levels in the brain. [6]
What are the risks associated with stopping Lexapro abruptly?
Abruptly stopping Lexapro can lead to discontinuation syndrome, which may include symptoms such as dizziness, sensory disturbances, anxiety, agitation, confusion, headache, fatigue, and irritability. Gradual tapering of the dose under medical supervision is generally recommended. [2]
What is the typical dosage of Lexapro?
The starting dose for adults with MDD or GAD is typically 10 mg once daily, which may be increased to a maximum of 20 mg once daily based on individual response and tolerability. For adolescents aged 12 to 17 years with MDD, the starting dose is also typically 10 mg once daily, with a maximum recommended dose of 20 mg once daily. [2]
How does patent expiry affect drug pricing?
When patents expire, generic competition typically leads to a significant decrease in the price of the medication. [3]
What are the implications of patent challenges for drug availability?
Patent challenges can influence the timeline for generic drug entry. If patents are invalidated or found not to be infringed, generic manufacturers may be able to launch their products sooner, increasing market competition and potentially lowering prices. [4]
Sources:
[1] https://www.drugpatentwatch.com/lexapro-patent-information
[2] https://www.drugpatentwatch.com/escitalopram-oxalate-patient-information
[3] https://www.drugpatentwatch.com/escitalopram-oxalate-patent-expiry
[4] https://www.drugpatentwatch.com/lexapro-patent-litigation
[5] https://www.drugpatentwatch.com/ AbbVie company information
[6] https://www.drugpatentwatch.com/citalopram-vs-escitalopram