Why Is My Child on ADHD Stimulants and Still Can’t Pay Attention?

Why doesn’t my child’s ADHD medication work?

“Why is my child on stimulants and still unable to pay attention?” This question comes up in my practice almost every day. “What am I doing wrong? The doctor told us it would help.” The parents I talk to feel confused and frustrated after trying a variety of stimulant medications with little to no improvement in their child’s attention. To add to the frustration of unrelenting inattention, countless hours of inadequate sleep and appetite suppression can also emerge after beginning stimulants. So, is it the wrong diagnosis, is the medication wearing off too quickly, or is the medication not working as intended?

What a major 2025 study found about stimulants

A study published by Cell in late 2025 discovered stimulant medications, like Adderall and Ritalin, may work differently than initially thought. For this study, 5,800 children between the ages of 8 and 11 had their brain activity scanned via fMRI while taking stimulants. Rather than attention centers lighting up, researchers found increased activity in regions of the brain related to wakefulness, arousal, and rewards. Notably, stimulants in this study also temporarily improved cognitive performance in sleep-deprived children, even those without attention-deficit/hyperactivity disorder (ADHD). These findings raise important questions about the effectiveness of stimulants for treating ADHD.

Stimulants in this study also temporarily improved cognitive performance in sleep-deprived children, even those without ADHD. That alone changes how we should think about a child who is on medication and still struggling to focus.

This study provides a new perspective compared to previous imaging studies that examined cognitive control networks activated by stimulants. First, it draws on a significantly larger sample population from the Adolescent Brain Cognitive Development (ABCD) Study, which is part of the National Institute of Mental Health Data Archive. In contrast, earlier studies cite much smaller sample sizes, with some involving only 16 to 93 individuals (Pereira-Sanchez et al., 2021; Kowalczyk et al., 2022). Second, this study takes into account sleep deprivation, a common factor known to negatively impact attention, which many prior studies on stimulants did not include. Finally, it employs high-precision neuroimaging while participants are in a resting state rather than engaged in a specific task. This approach provides a clearer understanding of brain network connectivity without the potential interference of task performance, which can cloud our understanding of organic underlying issues.

Like any study, there are limitations to consider when interpreting the results. The concept of “attention” is challenging to define, leading to variations in how different studies measure it. For instance, does attention refer to the ability to filter out irrelevant information, release of specific activity in a certain part of the brain, or the ability to engage with one’s surroundings (Lindsay, 2020)? To assess attention, this study employed a strategy that highlighted differences in connectivity across the brain’s networks. This may explain only part of our understanding of attention. Another limitation is the variety of stimulants and different subtypes of ADHD examined, making it unclear whether specific types of stimulants or particular subtypes of ADHD exhibit this network pattern.

How sleep deprivation shapes attention

Numerous studies have shown that insufficient sleep negatively impacts attention, with some experts suggesting that the level of impairment can be similar to that of alcohol intoxication (Williamson & Feyer, 2000). Sleep disturbances may also serve as a risk factor for developing ADHD. While it remains unclear if sleep disturbances act as a precursor to ADHD, many individuals with the disorder experience both sleep issues and ADHD symptoms in early childhood.

The 2025 Cell study found that sleep-deprived brains can function similarly to well-rested brains if stimulants are used. While focus may not necessarily improve, alertness and motivation do increase. This phenomenon occurs because stimulants provide a reward to the brain during mundane or tedious tasks. The study raises the possibility that some children may be misdiagnosed with ADHD, with symptoms of ADHD stemming from inadequate sleep and being managed by stimulants. The long-term impact of stimulants used for individuals with sleep deprivation remains unknown.

Stimulant medication vs. alternative interventions: what works best for ADHD in children?

As a parent of a child with ADHD, ask questions about treatment, lots of questions. Current evidence indicates that stimulant medications can enhance attention and executive function. However, the Cell 2025 study suggests that these stimulants may target motivation and arousal. This may help explain why medication seems ineffective for some children.

The American Academy of Pediatrics recommends that children six and older receive either medications along with behavioral therapy or one of these treatments individually. For younger children, behavioral therapy, which teaches skills for social and academic success while giving parents strategies to reinforce at home, is recommended. Some research suggests that starting behavioral therapy and adding medication later, if needed, produces the best outcomes (Pelham et al., 2016).

Stimulant medications can have a variety of adverse side effects. The most common side effects include gastrointestinal issues (e.g., decreased appetite and stomach pain), sleep disturbances, and, in some cases, psychotic episodes (Nanda et al., 2023). Additionally, there is a growing concern about the misuse of prescribed stimulant medications; Forrest and colleagues (2025) report that one in five individuals misuses these drugs. Given the debated mechanisms by which stimulants operate in the brain, the potential side effects, and the risk of misuse, many families and providers are exploring alternative treatment options.

Other medications are also available to treat ADHD. These medications are referred to as non-stimulants. These different types of medications include antidepressants, specific norepinephrine reuptake inhibitors, alpha-2 noradrenergic agonists, and non-schedule stimulants. The tricyclic antidepressants such as Imipramine (Tofranil), Doxepin, and Clomipramine (Anafranil), to name a few, have the most evidence for the treatment of ADHD in the non-stimulant category (Budur et al., 2005). Like any medication, these can have side effects such as sleepiness or gastrointestinal issues.

Some parents choose to take a non-medicinal approach to managing ADHD by using vitamins. What’s important to know about these vitamins is that research is indicating that they are complementary to therapy rather than an effective primary treatment. Research on vitamins for ADHD has produced mixed results, with most studies showing only mild improvements, if any. Additionally, most children receive adequate vitamins from their diet. Adding vitamins can sometimes lead to high levels of a vitamin that can make a child feel worse or produce ADHD-like symptoms. For example, vitamin B6 is referenced as a vitamin to help with attention; however, if the child’s B6 becomes too high it can produce symptoms that mimic ADHD (Albin et al., 1987). Unless a healthcare provider is overseeing your child’s care and suggests using vitamins, there is little evidence to suggest that it will be beneficial for alleviating symptoms of ADHD.

And as the Cell study reminds us, sleep is crucial. Sleep deprivation alone can mimic ADHD symptoms. To improve sleep, experts suggest using sleep hygiene methods. Sleep hygiene methods are habits and environmental factors that optimize sleep quality. Examples of sleep hygiene include maintaining a dark and cool sleep environment, avoiding electronic devices and glowing screens, as well as refraining from consuming caffeine, particularly around bedtime.

The full spectrum of ADHD care in one place

Emora Health provides the complete picture: therapy for ADHD, psychological testing to confirm the diagnosis, and medication management with non-stimulant options. Whether your child needs a first evaluation or a second opinion on treatment, our clinicians work together so families don’t have to coordinate care across multiple providers.

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