Atomoxetine is a prescription medication classified as a selective norepinephrine reuptake inhibitor used to treat attention deficit hyperactivity disorder. It works by blocking the reabsorption of norepinephrine in the brain, thereby increasing the neurotransmitter's availability. This heightened norepinephrine activity helps improve focus, impulse control, and behavioral regulation in patients with adhd. The drug does not affect dopamine levels directly, though elevated norepinephrine can indirectly influence dopaminergic pathways. Atomoxetine is taken orally and its effects typically begin to appear after several weeks of consistent use. The medication is intended for long-term management of symptoms rather than providing immediate relief. By selectively inhibiting the norepinephrine transporter, it reduces hyperactive neural signaling that contributes to adhd symptoms.

Atomoxetine is a prescription medication indicated for attention deficit hyperactivity disorder in children, adolescents, and adults. Its primary action is to inhibit the reuptake of norepinephrine in the brain. By increasing norepinephrine levels it enhances attention and reduces impulsivity and hyperactivity. The medication belongs to a class known as selective norepinephrine reuptake inhibitors. It does not affect dopamine reuptake but can indirectly influence dopaminergic pathways involved in focus. Atomoxetine is taken orally and reaches therapeutic concentrations within several hours after ingestion. Its effect on attention is achieved through sustained elevation of norepinephrine that improves signal processing in prefrontal cortical circuits. The drug is metabolized primarily by the liver enzyme cyp2d6 and is eliminated through urine.

Atomoxetine may cause nausea in some patients. Headache is reported by a portion of users. Sleep disturbances, including insomnia, have been observed. Decreased appetite can occur during treatment. Stomach pain or abdominal discomfort may appear. Fatigue or drowsiness is occasionally noted. Dizziness may affect a minority of individuals. Rarely, rash or skin irritation can develop.

Atomoxetine may cause gastrointestinal discomfort in some patients. It can lead to decreased appetite or weight loss during treatment. Some individuals experience sleep disturbances such as insomnia or vivid dreams. Mood changes including irritability or mild anxiety have been reported. Rarely, elevated liver enzymes or allergic skin reactions may occur. These effects are generally mild and often improve with continued use.