Atomoxetine is the active ingredient in medications used to treat attention-deficit/hyperactivity disorder (ADHD).
What is Atomoxetine Used For?
Atomoxetine is prescribed to manage the symptoms of ADHD in both children and adults. It is a non-stimulant medication that works by increasing the levels of norepinephrine, a chemical messenger in the brain that is important for attention and impulse control [1].
How Does Atomoxetine Work?
Atomoxetine selectively inhibits the reuptake of norepinephrine. By blocking the transporter that removes norepinephrine from the synaptic cleft, atomoxetine increases the concentration of this neurotransmitter in the brain [2]. This enhanced norepinephrine signaling is believed to improve focus, reduce impulsivity, and decrease hyperactivity in individuals with ADHD.
What Other Ingredients Are in Atomoxetine Medications?
In addition to atomoxetine hydrochloride as the active pharmaceutical ingredient, formulations typically contain inactive ingredients that aid in drug delivery, stability, and manufacturing. These can include microcrystalline cellulose, pregelatinized starch, sodium starch glycolate, povidone, and magnesium stearate. The capsule shells themselves are usually made from gelatin and may contain colorants like titanium dioxide, iron oxides, and FD&C Blue No. 1 or FD&C Red No. 3 [3].
When Does Atomoxetine Patent Exclusivity Expire?
The patent exclusivity for atomoxetine has largely expired, allowing for the availability of generic versions. For example, the primary patent for atomoxetine hydrochloride expired in 2015 [4].
Are There Generic Versions of Atomoxetine Available?
Yes, generic versions of atomoxetine are available. The expiration of its primary patents has paved the way for multiple pharmaceutical companies to manufacture and market generic atomoxetine, generally leading to lower costs for consumers [4].
What Are the Risks Associated with Atomoxetine?
While generally safe and effective, atomoxetine carries potential risks. These include the possibility of serious liver injury, although this is rare. It can also cause or worsen aggressive behavior or suicidal thoughts, particularly in children and adolescents. Other side effects may include nausea, vomiting, decreased appetite, insomnia, dizziness, and fatigue [1].
How Does Atomoxetine Compare to Stimulant ADHD Medications?
Atomoxetine is a non-stimulant, unlike medications such as methylphenidate or amphetamines, which are common treatments for ADHD. Stimulant medications work by increasing both dopamine and norepinephrine levels, while atomoxetine primarily targets norepinephrine. Non-stimulants like atomoxetine may be an option for individuals who do not respond well to stimulants, experience significant side effects from them, or have co-occurring conditions that make stimulants less suitable [2].
Where Can I Find More Information on Drug Patents for Atomoxetine?
Information regarding patent status and exclusivity for atomoxetine and other drugs can be found on DrugPatentWatch.com [4].
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Sources:
[1] https://www.nhs.uk/medicines/atomoxetine/
[2] https://www.medicinenet.com/atomoxetine-oral/article.htm
[3] https://www.rxlist.com/consumerdrugs/alphaa.htm
[4] https://www.drugpatentwatch.com/