Published by Actually Sleeping · Reviewed by Dr. Samantha Abrahamson, PharmD · Review policy · Updated 2026-11-10

Can asthma or ADHD medicines affect a young child’s sleep?

Yes, some can. Montelukast carries an FDA boxed warning that includes vivid dreams, sleepwalking and trouble sleeping. Oral steroids can change behavior and appetite. Stimulants for ADHD commonly cause trouble falling or staying asleep, though AAP ADHD guidance starts at age 4 with parent training first. Apart from the FDA’s montelukast advice, do not stop a prescribed medicine on your own; talk to your child’s pediatrician.

A note on scope: Dr. Sam is a Doctor of Pharmacy and a licensed pharmacist, not a physician. This page explains in general terms how a medicine, supplement or remedy relates to sleep; it does not replace your child’s pediatrician. Check with your child’s pediatrician before giving your child any medicine, supplement or remedy, and follow the product label.

The short answer

Asthma, ADHD and the medicines for both can change sleep. The fix is almost never to stop the medicine at home. It is to tell the prescriber exactly what you are seeing, so they can adjust the plan.

Once the medical side is in hand, many families find the sleep is still hard. Actually Sleeping works on that part, with a plan written by Dr. Sam, a pharmacist who takes medication questions seriously and plans around your child’s treatment.

Asthma: the condition affects sleep too

The AAP uses nighttime flare-ups as one way to grade asthma: rare night symptoms fit milder asthma, while flare-ups more than once a week fit moderate asthma, and severe asthma can disrupt sleep often. The AAP stresses that overall control matters most. A child who coughs or wheezes at night may need a better controller plan, not a sleep fix.

Asthma medicines and sleep

Montelukast. The FDA requires a boxed warning about serious neuropsychiatric events. Listed effects include bad or vivid dreams, sleepwalking, trouble sleeping, agitation and anxiety. It is approved for asthma from age 1. The FDA says to stop it and contact a health care professional right away if mood or behavior changes.
Oral steroids for flare-ups. The AAP lists behavior change and increased appetite among short-term side effects, which go away after the course ends.
Inhaled steroids. The AAP says side effects are few, such as a mouth yeast infection or hoarseness. A spacer and rinsing the mouth lower the risk.
Albuterol. The National Library of Medicine lists shaking and nervousness among common side effects. If your child seems wound up after a bedtime treatment, mention it, but do not skip a rescue medicine your child needs to breathe.

ADHD medicines in young children

Age. The AAP’s ADHD guideline covers children aged 4 to 18. Toddlers are outside it.
First-line care for preschoolers is parent training in behavior management, not medicine, per the AAP.
Stimulants and sleep. The National Library of Medicine lists difficulty falling asleep or staying asleep among common side effects of methylphenidate, and advises asking your doctor or pharmacist how late in the day a missed dose can be taken.

If behavior is a concern in a young child, ask your pediatrician to look at sleep as part of the picture.

What to ask the pediatrician

“My child’s sleep changed after starting this medicine. Is that a known effect, and what are our options?”
“Is my child’s asthma well controlled if they wake with coughing?”
“Could snoring or breathing pauses be part of the problem?”
“Is there a better time of day to give this medicine?” Your pharmacist can help with timing questions too.

Medicine is not the answer to a sleep problem

Follow your child’s asthma action plan and the prescriber’s advice. Beyond that, sleep in a child with a medical condition is shaped by the same things as in any child: schedule, routine and how they fall asleep. Children with medical conditions still learn to fall asleep independently. They just need a plan that accounts for their treatment, and that rarely comes from a general list of tips.

Actually Sleeping plans around the pediatrician’s treatment, never instead of it. You get a plan written for your child, bootcamp-style coaching before the first night, daily 1:1 check-ins and naps coached until solid. Toddler families describe the change in the over-12-months video reviews.

Book the free consultation and bring your child’s medication list.

Want this fixed for your baby?

Actually Sleeping is 1:1 coaching: a sleep plan written for your baby by Dr. Sam, bootcamp-style coaching before the first night, and daily check-ins until it is working. 700+ families coached, 129 video reviews, and a written guarantee: 8–12 hours through the night within 14 days, or a full refund.

Book your free consultation → See what families say

Frequently asked

Can montelukast cause sleep problems in toddlers?

It can. The FDA boxed warning lists bad or vivid dreams, sleepwalking and trouble sleeping among possible effects. The FDA advises stopping it and contacting your child’s health care professional right away if mood or behavior changes.

Do steroids for asthma keep children awake?

The AAP lists behavior change and increased appetite among short-term side effects of oral steroids, and says they go away when the course ends. Tell your pediatrician if sleep is badly affected, but finish the course unless told otherwise.

Can my 3 year old be given ADHD medicine?

The AAP ADHD guideline covers ages 4 to 18, and for preschoolers it recommends parent training in behavior management as first-line treatment. Any medicine question for a young child belongs with your pediatrician.

Does night coughing mean my child’s asthma is not controlled?

It can. The AAP uses nighttime flare-ups as one measure of asthma severity and stresses overall control. Tell your pediatrician how often your child coughs or wakes at night, and bring your child’s asthma action plan to the visit.