When Your Child Can’t Sleep: Understanding Melatonin Safety and Alternatives for Pediatric Sleep Problems

Story-at-a-Glance

• Nearly half of American parents now give melatonin to children under 18, yet the supplement remains unregulated by the FDA. The dosage inconsistencies are dramatic—from 83% less to 478% more than labeled amounts

• While melatonin can reduce sleep onset time by approximately 15 minutes in typically developing children with insomnia, behavioral interventions remain the gold standard first-line treatment for most childhood sleep problems

• Accidental melatonin ingestions among children increased 530% between 2012 and 2021, resulting in over 260,000 poison control calls, with gummy formulations posing particular risks due to their candy-like appearance

• Sleep hygiene practices—including consistent bedtimes, screen-free wind-down periods, and calming routines—address the root causes of most pediatric sleep issues without pharmacological intervention

• Children’s natural melatonin production varies significantly by age and pubertal stage, with younger children typically producing higher levels than adults, raising questions about long-term supplementation effects

• The International Pediatric Sleep Association’s 2025 guidelines recommend melatonin only after behavioral interventions fail, under medical supervision, and for the shortest duration possible

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When Dr. Judith Owens founded one of America’s first pediatric sleep clinics in 1993, melatonin for children was virtually unheard of outside controlled research settings. Three decades later, the Harvard Medical School professor and director of Boston Children’s Hospital Sleep Center describes the current landscape differently: “It’s almost like a vitamin now.”

The shift has been dramatic. A 2024 survey by the American Academy of Sleep Medicine revealed that 45% of parents have given melatonin to a child under 18 to help with sleep. But behind this widespread use lies a more complex reality—one where well-intentioned parents navigate unregulated supplements, conflicting advice, and a fundamental question. When, if ever, is melatonin truly appropriate for child sleep problems and melatonin use in pediatric populations?

The Melatonin Paradox: Natural Doesn’t Mean Simple

Melatonin is indeed a naturally occurring hormone, synthesized by the pineal gland deep within the brain. As darkness falls, melatonin levels rise, signaling the body’s internal clock that it’s time to sleep. Come morning, production decreases, allowing us to wake. This elegant system regulates not just sleep-wake cycles but coordinates virtually every function governed by circadian rhythms.

Here’s what makes child sleep problems and melatonin supplementation particularly complex: children aren’t simply smaller versions of adults when it comes to this hormone. Research published in The Journal of Clinical Endocrinology & Metabolism shows that melatonin concentrations in children correlate more strongly with pubertal stage than chronological age. Younger, prepubertal children naturally produce higher melatonin levels than adults—a detail that becomes crucial when considering supplementation.

Additionally, children’s bodies are still developing. Melatonin receptors exist not only in the brain’s sleep-regulating suprachiasmatic nucleus but throughout the body—in the pancreas, heart, reproductive organs, and immune tissues. (This widespread distribution is precisely why some researchers express caution about long-term use during critical developmental windows.)

When Melatonin Works: The Evidence Base

The research on melatonin for child sleep problems presents a nuanced picture. For certain populations and specific sleep disorders, the evidence is actually quite strong.

Studies on children with autism spectrum disorder demonstrate some of the clearest benefits. In one double-blind randomized controlled trial by Maras and colleagues, 95 children with ASD received either prolonged-release melatonin (2-10 mg daily) or placebo for 52 weeks. The results were statistically significant: children taking melatonin slept an average of 57.5 minutes longer each night compared to the placebo group. They also showed notable improvements in sleep onset latency.

For children with ADHD, particularly those whose stimulant medications may interfere with sleep, melatonin has shown consistent effectiveness. A systematic review found that doses between 5-10 mg, taken 20 minutes to two hours before bed, consistently decreased sleep latency in this population. The mechanism appears related to correcting delayed dim light melatonin onset (DLMO)—the biological marker of when the brain starts producing melatonin naturally—which occurs later in many children with ADHD.

Research on typically developing children with insomnia shows more modest effects. A 2023 systematic review in eClinicalMedicine analyzing randomized controlled trials found that melatonin reduced sleep latency by approximately 15 minutes and increased total sleep time by about 19 minutes in otherwise healthy children with chronic insomnia. While statistically significant, these changes were accompanied by “very low” certainty of evidence and prompted researchers to conclude that benefits are limited.

What becomes clear across studies is this: melatonin appears most effective for circadian rhythm disorders—situations where the body’s internal clock is genuinely out of sync, such as delayed sleep phase syndrome common in adolescents. It’s less effective for behavioral sleep issues, which account for the majority of child sleep problems.

The Darker Side: When Melatonin Becomes Dangerous

The CDC’s 2022 report painted a concerning picture. Between 2012 and 2021, pediatric melatonin ingestions reported to poison control centers increased 530%—from 8,337 cases to 52,563 cases annually. Most alarmingly, these weren’t all accidental overdoses by curious toddlers. While 94% were unintentional exposures (primarily children under 5 eating gummy supplements they mistook for candy), there was also a troubling rise in intentional ingestions by adolescents.

Over that decade, more than 260,000 children required poison control intervention. Of those, 4,555 experienced serious outcomes requiring hospitalization. Five children needed mechanical ventilation. Two—a 3-month-old and a 13-month-old—died.

Dr. Michael Toce, a pediatric toxicologist at Boston Children’s Hospital who co-authored the CDC study, notes that most children (84%) remained asymptomatic after ingestion. Among those who did experience symptoms, gastrointestinal issues, cardiovascular effects, and central nervous system problems were most common. But he emphasizes an often-overlooked danger: product variability.

A study published in JAMA analyzed 31 melatonin supplements and found actual melatonin content ranged from 83% below to 478% above what labels claimed. In practical terms, a parent thinking they’re giving their child 1 mg could inadvertently administer nearly 6 mg. Even more concerning, eight supplements contained serotonin—a controlled substance that affects far more than sleep.

This variability reaches alarming levels in gummy formulations, the very products marketed most heavily toward children. Their candy-like appearance and taste create a perfect storm: appealing to young children while containing wildly inconsistent doses of a bioactive hormone.

Behavioral Interventions: What Actually Addresses Root Causes

Here’s what often gets lost in discussions about child sleep problems and melatonin: most pediatric sleep issues stem from behavioral causes that no supplement can truly fix.

Dr. Terese Amble, a pediatric sleep psychologist at Children’s Minnesota Hospital, sees this pattern daily in her clinic. “When children have trouble getting to sleep, parents and even pediatricians may turn to melatonin as a quick fix,” she observes. But behavioral insomnia—manifesting as bedtime resistance, multiple “curtain calls,” or difficulty falling asleep without specific conditions—responds remarkably well to targeted interventions.

The bedtime routine approach, validated across multiple studies, involves three to five quiet activities taking 20-45 minutes total, flowing in one direction (kitchen to bathroom to bedroom, for example) and occurring in the same order each night. This predictability provides exactly what children experiencing sleep anxiety need: familiarity and the opposite of uncertainty.

One particularly effective technique for bedtime resistance is the “bedtime pass program.” Children receive one to three laminated passes allowing them to leave their room for specific, pre-approved activities—a hug from a parent, a glass of water, one more trip to the bathroom. Once passes are used, they’re done for the night. Research shows this simple intervention dramatically reduces nighttime battles while giving children a sense of control and parents clear boundaries to enforce.

For adolescents, the approach shifts. The challenge is often delayed sleep-wake phase disorder—their circadian rhythm naturally shifts later during puberty. Attempting to force earlier sleep with melatonin, particularly to accommodate early school start times, often backfires. As Dr. Owens notes, “It gives the teen the message that ‘when you can’t sleep, take a pill.'”

Instead, addressing screen use (blue light suppresses melatonin production), establishing consistent wake times even on weekends, and strategic use of bright light exposure in the morning helps realign the body’s natural clock. When melatonin is used in these cases, it should be timed to shift circadian phase—small doses (0.5-1 mg) given several hours before desired bedtime, not as a sedative right before bed.

The Medical Perspective: When to Consider, When to Avoid

The International Pediatric Sleep Association’s 2025 consensus recommendations provide perhaps the clearest framework for healthcare providers navigating melatonin decisions.

Their guidance is unequivocal on several points:

Melatonin should not be used in typically developing children under 2 years old except under specialist supervision, as behavioral causes account for virtually all sleep difficulties in this age group and no safety studies exist for infants.

Melatonin is not indicated for children without sleep problems who simply want “better sleep,” for parasomnias like sleepwalking, or to force adolescents to sleep earlier for school schedules.

Melatonin should be considered for delayed sleep phase syndrome and chronic insomnia—but only after behavioral interventions have been attempted, only under medical supervision, and for as short a period as possible (typically no more than 3-6 months for typically developing children).

Longer-term use may be appropriate for children with neurodevelopmental disorders like autism or ADHD, where sleep problems often persist despite behavioral interventions and where improved sleep dramatically affects daytime functioning. Dr. Beth Malow, a professor of neurology at Vanderbilt University and autism sleep specialist, notes: “When we improve sleep in children with autism, we improve daytime behavior.” For these populations, prolonged-release formulations (2-10 mg) under ongoing medical supervision have shown both efficacy and reasonable safety in studies extending up to two years.

What about side effects? Generally, they’re mild when they occur—headaches, increased bedwetting, nightmares, dizziness, mood changes, or morning grogginess, all of which resolve when melatonin is discontinued. The concern lies elsewhere: in potential effects on developing reproductive systems (observed in animal studies but not yet demonstrated in humans), in the lack of long-term safety data, and in fostering a “pill for every problem” mentality.

There’s also the issue of puberty. Some studies show melatonin levels naturally declining at puberty. Researchers still debate whether exogenous melatonin affects puberty-related hormones in humans, though animal studies raise questions worth considering.

The Cultural Shift: How We Got Here

To understand the current moment, it helps to look back. In the early 2000s, melatonin products carried warnings against use in children. By 2013, companies like Zarbee’s (founded by Utah pediatrician Zak Zarbock) introduced melatonin specifically marketed to children, often combined with other products like cough syrup. The marketing positioned melatonin as a “reset button” for bedtime routines that had gone off track.

The pandemic accelerated everything. As Dr. Karima Lelak, lead author of the CDC poisoning study, explains: “Children were upset about being home, teenagers were closed off from friends.” Stress and anxiety surged. Sleep disruption followed. Parents, desperate for solutions and with children home all day with increased access to supplements, increasingly turned to melatonin. Poison control calls increased 38% from 2019 to 2020 alone.

Today, melatonin is the second most popular “natural” product parents give children after multivitamins. But as multiple experts emphasize: being natural doesn’t mean being benign, and being available over-the-counter doesn’t mean being appropriate for every use.

What Parents Actually Need to Know

Let’s be direct about practical guidance for child sleep problems and melatonin considerations:

Start with sleep hygiene fundamentals. Consistent bedtimes and wake times (yes, even weekends), a dark and cool bedroom, screen-free time before bed, and a predictable routine. These aren’t optional preliminary steps—they’re the foundation that makes sleep possible. Research shows that simply following regular bedtime routines increases sleep duration in children and decreases bedtime resistance far more effectively than supplements.

Identify the actual problem. Is your child unable to fall asleep despite being tired (possible circadian delay)? Fighting bedtime actively (behavioral resistance)? Waking frequently (possible sleep onset associations)? Different problems require different solutions, and melatonin only addresses certain types.

Consider underlying causes. Anxiety, restless legs, sleep apnea from enlarged tonsils, or even something as simple as an age-inappropriate bedtime can all masquerade as insomnia. A thorough evaluation by your pediatrician should come before reaching for supplements.

If considering melatonin, consult your pediatrician first. This shouldn’t be optional. Your doctor can help determine if it’s truly indicated, what dose makes sense (usually 0.5-1 mg to start, sometimes up to 3 mg), timing (typically 30-60 minutes before desired sleep time), and formulation. Look for products with USP verification, which provides some quality assurance, though few melatonin products have earned this designation.

Never use melatonin as a daily solution without addressing behaviors. As Dr. Owens cautions: “You’re setting up a potential lifetime of dependence on sleeping medication.” Melatonin should be part of a broader plan, not a standalone fix.

Store it safely. Use child-resistant packaging, keep it well out of reach, and avoid gummy formulations if you have young children who might mistake them for treats. Nearly half the children who visited emergency rooms for melatonin ingestion had consumed gummies.

For more information on the different formulations available and their specific uses, you might find our article on 7 Different Types of Melatonin helpful in understanding which products work differently and why that matters.

Looking Forward: Unanswered Questions

Despite decades of use, significant questions remain unanswered. We don’t have robust data on melatonin’s effects on growth, development, or puberty in humans over extended periods. We don’t fully understand optimal dosing for different ages and body weights. We don’t know if early and sustained use affects the body’s natural melatonin production later in life.

David Kennaway, a professor of physiology at the University of Adelaide, has been particularly vocal about this uncertainty. He argues that distributing melatonin over-the-counter to children constitutes “a vast, uncontrolled medical experiment” with a hormone that binds to receptors throughout the developing body. Others counter that sleep deprivation itself carries significant risks, and for families struggling with severe sleep issues, the benefits may outweigh theoretical concerns.

What we do know is this: sleep matters profoundly for children’s development, learning, emotional regulation, and health. Parents dealing with child sleep problems deserve better than a choice between persistent sleep deprivation or reaching for supplements of dubious quality with incomplete safety data.

The Path Forward

The core tension in discussions about child sleep problems and melatonin isn’t really about whether this hormone “works”—for specific situations, it demonstrably does. The tension lies in how we as a society approach childhood sleep difficulties.

Do we reach first for pharmacological solutions that bypass understanding root causes? Or do we invest the time and effort required for behavioral interventions that may work more slowly but address why sleep isn’t happening naturally?

Dr. Jocelyn Cheng, a sleep medicine physician and member of the AASM Public Safety Committee, frames it well: “Melatonin is often seen as a quick fix for sleep problems, but it’s not a one-size-fits-all solution. The use of melatonin in children should be approached with caution and ideally under the guidance of a health care professional.”

For most children, good sleep is possible through behavioral approaches—consistent routines, appropriate bedtimes aligned with their natural circadian preferences, and addressing anxiety or other underlying issues. When these genuinely fail, or when working with specific populations like children with neurodevelopmental disorders, melatonin may have a role under medical guidance.

But perhaps the most important message is this: before deciding whether your child needs melatonin, make sure you’ve created the conditions that make sleep possible in the first place. Dark, cool rooms. Predictable routines. Screen-free wind-down time. Consistent schedules. These aren’t just preliminaries to “try first”—they’re the foundation of healthy sleep that lasts a lifetime.

What questions do you have about your child’s sleep challenges? Have you found behavioral approaches that worked—or struggled to implement them consistently? Understanding what makes sleep elusive in your specific situation is the first step toward finding sustainable solutions.

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FAQ

Q: What exactly is melatonin and how does it work in children’s bodies?

A: Melatonin is a hormone naturally produced by the pineal gland in the brain. It helps regulate circadian rhythms—the body’s internal 24-hour clock. As darkness falls, melatonin production increases, signaling that it’s time to sleep. In children, melatonin levels are typically higher than in adults and vary by pubertal stage more than by age. The hormone works by binding to MT1 and MT2 receptors in the brain’s suprachiasmatic nucleus, which controls sleep-wake cycles, as well as receptors throughout the body. When taken as a supplement, synthetic melatonin mimics these natural effects, though the timing, dose, and formulation significantly affect whether it helps with sleep onset (higher doses near bedtime) or circadian phase shifting (lower doses earlier in the evening).

Q: What is delayed sleep phase syndrome (DSPS)?

A: Delayed sleep phase syndrome is a circadian rhythm disorder where a person’s natural sleep-wake cycle is significantly later than conventional schedules. Instead of feeling sleepy at 9 or 10 PM, someone with DSPS may not feel tired until 1 or 2 AM and naturally wants to sleep until late morning or early afternoon. This isn’t due to poor sleep habits but rather a biological shift in when the body produces melatonin. DSPS is particularly common in adolescents due to puberty-related changes in circadian timing. It differs from simple bedtime resistance—children with DSPS genuinely aren’t sleepy at conventional bedtimes and can sleep normally on their delayed schedule.

Q: What does “sleep hygiene” mean?

A: Sleep hygiene refers to behaviors and environmental factors that promote good quality sleep. For children, this includes: maintaining consistent bedtimes and wake times (even on weekends), creating a dark, cool, quiet bedroom environment, establishing predictable bedtime routines (like bath, brushing teeth, story time), limiting caffeine and sugar, avoiding screens for at least an hour before bed (blue light suppresses melatonin), ensuring regular daytime physical activity, and using the bed primarily for sleep rather than homework or play. Good sleep hygiene addresses environmental and behavioral factors that interfere with natural sleep processes.

Q: What is behavioral insomnia of childhood?

A: Behavioral insomnia of childhood comes in two primary forms. The “sleep-onset association type” occurs when children become dependent on specific conditions to fall asleep—like being rocked, fed, or having a parent present—and can’t transition to sleep without them. When these associations aren’t available during normal night wakings, the child can’t fall back asleep. The “limit-setting type” involves bedtime resistance behaviors: stalling, repeated requests for water or stories (“curtain calls”), crying, refusing to go to bed, or getting out of bed. This typically results from inconsistent parental limit-setting or developmentally inappropriate bedtimes. Both types respond well to behavioral interventions rather than medication.

Q: What is dim light melatonin onset (DLMO)?

A: DLMO is a biological marker used to measure when the body begins producing melatonin naturally in the evening. It’s measured by collecting saliva samples in dim light conditions over several hours before bedtime and analyzing when melatonin concentration begins to rise. DLMO provides an objective measure of a person’s circadian timing and can reveal whether their internal clock is shifted earlier or later than their desired sleep schedule. In research settings, DLMO helps diagnose circadian rhythm disorders and determine optimal timing for melatonin supplementation, which should generally be given several hours before natural DLMO to shift circadian phase effectively.

Q: What does “prolonged-release” or “extended-release” melatonin mean?

A: Prolonged-release formulations are designed to release melatonin gradually over several hours rather than all at once. Standard immediate-release melatonin peaks in the blood within about 30-60 minutes and clears relatively quickly, making it useful primarily for sleep onset. Prolonged-release versions maintain melatonin levels for 6-8 hours, potentially helping with both falling asleep and staying asleep. Research in children with autism spectrum disorder has shown prolonged-release formulations (typically 2-10 mg) more effectively increase total sleep time compared to immediate-release versions, particularly when combined with behavioral therapy. However, these specialized formulations should be used under medical guidance.

Q: What are the common side effects of melatonin in children?

A: Most side effects of melatonin in children are minor and resolve when the supplement is discontinued. Commonly reported effects include headaches, increased bedwetting (possibly due to relaxation effects), nightmares or vivid dreams, dizziness, mood changes, and morning grogginess. Some children may experience gastrointestinal symptoms like nausea or upset stomach. Rarely, drowsiness persists into the next day. While these side effects typically aren’t serious, they should be discussed with a pediatrician. Of greater concern are theoretical long-term effects on development and puberty (not yet demonstrated in human studies) and the psychological effect of teaching children they need medication to sleep. Parents should monitor for side effects and report any concerns to their healthcare provider.

Q: Why are poison control centers receiving so many calls about melatonin?

A: The dramatic 530% increase in pediatric melatonin ingestion reports from 2012-2021 reflects several factors. First, melatonin use has skyrocketed—sales increased from $285 million in 2016 to $821 million in 2020. More homes have melatonin accessible, increasing exposure risk. Second, many products are gummy formulations that look and taste like candy, particularly attractive to young children. Third, melatonin isn’t required to be sold in child-resistant packaging, though some manufacturers voluntarily use it. Most ingestions (94%) are unintentional, primarily involving children under 5 who consume multiple gummies they mistake for treats. The pandemic also contributed, with more children at home all day and increased melatonin use by stressed families, creating more opportunities for accidental ingestion.

Q: What does it mean that melatonin is “unregulated” in the United States?

A: In the US, melatonin is classified as a dietary supplement rather than a drug, placing it under the Dietary Supplement Health and Education Act (DSHEA). This means the FDA doesn’t approve it for safety and effectiveness before sale, doesn’t verify label claims about content or dose, and doesn’t require manufacturing quality standards equivalent to pharmaceuticals. Studies have found melatonin products contain anywhere from 83% less to 478% more melatonin than labels claim, with the greatest variability in gummy products. Some supplements have even contained serotonin, a controlled substance, unlisted on labels. In contrast, countries like the United Kingdom, Australia, and much of Europe classify melatonin as a prescription medication with strict regulatory oversight.

Q: What age should children stop producing melatonin naturally?

A: This is a trick question—children never stop producing melatonin naturally! The body produces melatonin throughout life, though levels and patterns change with age. Interestingly, melatonin production in children actually peaks in early childhood, with prepubertal children showing higher concentrations than adults. As children enter puberty, natural melatonin levels begin declining and the timing of production shifts later (contributing to the tendency of teenagers to naturally stay up later and sleep later). This natural decline continues through adulthood. The concern with supplementation isn’t that children don’t produce melatonin, but rather questions about how long-term supplementation during critical developmental periods might affect the body’s natural production mechanisms or developmental processes influenced by this hormone.

Q: What is the difference between using melatonin as a “chronobiotic” versus a “hypnotic”?

A: These terms describe two different effects melatonin can have depending on dose and timing. As a “chronobiotic,” low doses of melatonin (0.5-1 mg) given several hours before natural sleep onset help shift circadian phase—essentially resetting the body’s internal clock to an earlier time. This is useful for delayed sleep phase syndrome. The timing is crucial; it should be given 5-6 hours before desired bedtime to advance circadian rhythm. As a “hypnotic,” higher doses (3-5 mg) given 30-60 minutes before bedtime have a mild sedative effect, promoting sleepiness and helping with sleep onset. Many parents unknowingly use melatonin as a hypnotic when a chronobiotic approach would be more effective for their child’s specific sleep issue, which is why medical guidance matters.

Q: Why do some experts say melatonin shouldn’t be used to help teenagers sleep earlier for school?

A: This recommendation, emphasized by Dr. Judith Owens and the International Pediatric Sleep Association, addresses several concerns. First, adolescent circadian biology naturally shifts later during puberty—teenagers biologically don’t produce melatonin until later in the evening. Using melatonin to force earlier sleep fights this developmental change rather than addressing the real problem (often early school start times that conflict with adolescent biology). Second, it may not work—if a teenager isn’t genuinely tired, melatonin likely won’t override biological wakefulness. Third, and perhaps most importantly, it sends the message that “when you can’t sleep, take a pill,” potentially setting up lifelong medication dependence for a problem better addressed through changes to school start times, improved sleep hygiene, or accepting that teenagers naturally have later chronotypes during these developmental years.

Q: What is USP verification and why does it matter for melatonin?

A: USP (United States Pharmacopeia) Verification is a voluntary quality control certification program for dietary supplements. Products with the “USP Verified” mark have been tested to confirm they contain the ingredients listed on the label in the declared amounts, don’t contain harmful levels of contaminants, will break down and release ingredients appropriately in the body, and were manufactured using good manufacturing practices. Given that studies show melatonin products often contain wildly different amounts than labels claim—and sometimes contain unlisted substances like serotonin—USP verification provides some assurance of quality. However, very few melatonin products currently carry this certification, and even USP-verified products aren’t necessarily appropriate or safe for every use, particularly in children. It addresses manufacturing quality but doesn’t validate medical appropriateness.

Q: What are “curtain calls” in the context of childhood sleep problems?

A: “Curtain calls” is the term sleep specialists use for repeated requests children make after bedtime—coming out of their room for “one more” glass of water, hug, bathroom trip, story, or to report on various concerns. Like an actor returning to stage for multiple bows, the child keeps reappearing despite bedtime being “over.” This behavior typically represents limit-setting behavioral insomnia rather than true inability to sleep. The “bedtime pass program” specifically addresses curtain calls: children receive 1-3 laminated passes they can “spend” for legitimate requests, but once passes are used, they’re done for the night. This gives children a sense of control (they decide when to use passes) while establishing clear boundaries parents can enforce consistently. Research shows this simple intervention dramatically reduces bedtime battles.

Q: If behavioral interventions work so well, why do so many parents turn to melatonin?

A: Several factors contribute to this disconnect. First, behavioral interventions require consistency over time—typically several weeks—while melatonin can seem to work the first night (though this may be placebo effect or only temporarily mask the problem). Second, implementing behavioral interventions demands effort when parents are exhausted: establishing firm bedtime routines, enforcing limits despite tears or tantrums, and maintaining consistency every single night. Third, clever marketing has positioned melatonin as “natural” and therefore risk-free, while behavioral interventions may feel harsh (particularly techniques involving some degree of extinction, though research shows these are safe). Fourth, providers sometimes recommend melatonin without first ensuring families have truly implemented good sleep hygiene. Finally, our culture tends to favor quick pharmacological fixes over slower behavioral change, even when the latter addresses root causes more effectively.