Which of the following is a common side effect of Atomoxetine?

Atomoxetine is a selective norepinephrine reuptake inhibitor commonly used in the treatment of attention-deficit hyperactivity disorder (ADHD). One of the well-documented side effects of Atomoxetine is insomnia. This occurs due to the medication's stimulation of norepinephrine pathways, which can interfere with sleep patterns.

While euphoria, weight gain, and increased appetite can occur with some medications, these are not typical side effects associated with Atomoxetine. In fact, Atomoxetine is generally more associated with decreased appetite and potential weight loss, rather than weight gain or increased appetite. Understanding these pharmacological effects is crucial for recognizing how Atomoxetine may influence mood and physical health, particularly in pediatric populations where monitoring for insomnia is essential.