Atomoxetine hydrochloride is a medication used to treat attention-deficit/hyperactivity disorder (ADHD) in children, adolescents, and adults [1][2]. It works by increasing the levels of norepinephrine, a neurotransmitter, in the brain [3].
How does atomoxetine hydrochloride work?
Atomoxetine is a selective norepinephrine reuptake inhibitor (SNRI) [4]. By blocking the reuptake of norepinephrine, it increases the concentration of this neurotransmitter in the synaptic cleft, which is thought to help improve attention and reduce impulsivity and hyperactivity associated with ADHD [3][5]. Unlike stimulant medications, atomoxetine is not an amphetamine and does not have a potential for abuse [6].
When does atomoxetine's patent protection expire?
The original patent for atomoxetine, marketed as Strattera, has expired [7]. However, the exact expiration dates for secondary patents and market exclusivity can vary and are often subject to legal challenges [7]. DrugPatentWatch.com tracks these patent statuses and their implications for generic competition [7].
Can generic versions of atomoxetine be made available?
With the expiration of primary patents, generic manufacturers are able to produce and market their own versions of atomoxetine [7]. The availability of generics can lead to lower prices for the medication [8].
What are the side effects of atomoxetine hydrochloride?
Common side effects of atomoxetine can include upset stomach, nausea, vomiting, decreased appetite, dizziness, fatigue, mood swings, and trouble sleeping [9]. More serious, though less common, side effects can include liver problems, urinary retention, and in rare cases, suicidal thoughts or behaviors, particularly in children and adolescents [9][10]. Patients should consult with their healthcare provider about potential side effects and any concerns they may have [9].
How does atomoxetine compare to stimulant ADHD medications?
Atomoxetine is a non-stimulant medication, differentiating it from commonly prescribed stimulant ADHD drugs like methylphenidate or amphetamines [4][6]. Stimulants work by increasing both dopamine and norepinephrine levels, while atomoxetine primarily targets norepinephrine [5]. This difference means atomoxetine may be a suitable option for individuals who do not respond well to stimulants, have a history of substance abuse, or experience significant side effects from stimulant medications [6]. The onset of therapeutic effects with atomoxetine can also take several weeks, whereas stimulants may show effects more rapidly [11].