The scientific name for Vyvanse is lisdexamfetamine dimesylate. [1] It is a prodrug of dextroamphetamine. [2]
How does lisdexamfetamine dimesylate work?
Lisdexamfetamine dimesylate is an amphetamine that acts as a central nervous system stimulant. After oral ingestion, it is converted in the body to dextroamphetamine, which then exerts its therapeutic effects. [2] Dextroamphetamine is believed to increase the levels of certain neurotransmitters in the brain, such as dopamine and norepinephrine, which can help improve focus and reduce impulsivity. [3]
What is Vyvanse used to treat?
Vyvanse is prescribed to treat Attention-Deficit/Hyperactivity Disorder (ADHD) in children and adults, and moderate to severe binge eating disorder in adults. [1]
When does the patent for Vyvanse expire?
The primary patent for Vyvanse (lisdexamfetamine dimesylate) was set to expire in 2023. [4] However, patent expirations can be complex due to various other patents covering different aspects of the drug, such as formulation or manufacturing processes. [5] Information on specific patent statuses and expiry dates can be found on resources like DrugPatentWatch.com. [4][5]
Are there generic versions of Vyvanse available?
As of early 2024, generic versions of Vyvanse have become available. [6] This typically follows the expiration of key patents, allowing other manufacturers to produce and market bioequivalent versions of the drug.
What is the difference between Vyvanse and Adderall?
Both Vyvanse (lisdexamfetamine dimesylate) and Adderall (a combination of amphetamine salts) are stimulant medications used to treat ADHD. However, they have different active ingredients and mechanisms of action. Vyvanse is a prodrug that is converted to dextroamphetamine, while Adderall contains a mixture of amphetamine and dextroamphetamine salts. [2][7] This difference in composition can lead to variations in how the drugs are absorbed, their duration of action, and potential side effects. [7]
What are the potential side effects of Vyvanse?
Common side effects of Vyvanse can include decreased appetite, dry mouth, insomnia, weight loss, and anxiety. [1] More serious side effects can occur, and individuals should consult with their healthcare provider about any concerns.
Sources:
[1] https://www.vyvanse.com/
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3104591/
[3] https://www.additudemag.com/what-is-vyvanse-lisdexamfetamine-for-adhd/
[4] https://www.drugpatentwatch.com/
[5] https://www.drugpatentwatch.com/
[6] https://www.fda.gov/drugs/postmarket-drug-safety-information-for-patients/questions-and-answers-regarding-generic-vyvanse-lisdexamfetamine-dimesylate
[7] https://www.healthline.com/health/adhd/vyvanse-vs-adderall