Jeffrey Panko NP Psychiatry · Patient education
Lemborexant
Dayvigo / Oral tablets
A guide for adults taking lemborexant.
Follow the directions on your prescription and your provider's recommendations.
Formulations: Oral tablets are taken once at bedtime. Dose limits depend on other medicines and liver function.
What it is used for
Lemborexant treats adult insomnia involving difficulty falling asleep or staying asleep.
How it works
It blocks orexin receptors, reducing wake-promoting signaling rather than acting through the benzodiazepine site.
What to expect over time
Sleep may improve from the first few nights. Review persistent insomnia rather than increasing doses yourself. Keep a brief record of bedtime, awakenings, wake time, and next-day alertness.
Taking your medication
- Take immediately before bed with at least seven hours available for sleep.
- Food may delay the effect. Do not take an extra dose if sleep is slow to come.
- Skip a missed dose if the full sleep window is unavailable. Do not repeat a dose that night.
When to get help
Emergency symptoms. Call 911 for slow breathing, inability to wake, or a severe allergic reaction.
Prompt medical advice. Stop the medication and contact your provider immediately after sleepwalking, sleep-driving, or other activities while not fully awake. Report worsening depression or disturbing sleep-related experiences.
If you feel unsafe or have thoughts of self-harm, call 911 or go to an emergency department.
Possible side effects
- Sleepiness, headache, or dizziness
- Vivid dreams or nightmares
- Next-day impairment or falls
Keeping track of treatment
Some side effects resolve with time; others may require a change of medication. Discuss persistent or bothersome side effects with your provider.
Watch for next-day drowsiness and unusual nighttime behavior. Ask someone close to you to mention events you may not remember.
Sleep paralysis, vivid experiences while falling asleep or waking, and brief leg weakness can occur. Report these symptoms.
If you take too much
For a suspected overdose, call Poison Control at 1-800-222-1222 immediately, even if you feel well. Call 911 for a seizure, collapse, trouble breathing, or inability to wake.
Before you start
Do not use with narcolepsy. Discuss sleep apnea, breathing problems, liver disease, falls, depression, and previous unusual sleep behavior.
Discuss pregnancy, pregnancy plans, and breastfeeding with your provider. Treatment decisions should consider both the medication and the condition being treated.
Medicines and interactions
Review all your medications with your provider, including over-the-counter medicines and supplements. Have new medications checked before taking them.
Avoid alcohol and do not combine with another insomnia medicine unless your provider has specifically reviewed the plan. Opioids and other sedatives increase impairment.
Some antibiotics, antifungals, antivirals, and seizure medicines change drug levels. Review grapefruit and all new medicines.
Avoid strong or moderate CYP3A inhibitors and strong or moderate inducers. Weak CYP3A inhibitors limit the recommended dose.
Everyday tips
Keep a consistent wake-up time and allow adequate sleep.
Avoid driving or dangerous work when drowsy, even if you think you slept enough.
Your questions answered
Can I take it if I have only a few hours to sleep?
No. Follow the full sleep window in your prescription; taking it too late increases next-day impairment.
Does medication replace insomnia treatment?
No. Cognitive behavioral therapy for insomnia (CBT-I) addresses sleep habits and patterns that medication alone may not resolve.
Storage and safety
Keep medication in its labeled container, away from excess heat and moisture and out of reach of children and pets. Do not share it. Ask a pharmacy about disposal of unused medication.
Sources
About this information
Educational handout; does not replace your prescription or provider's recommendations.
Educational inclusion does not mean this medication or its indications are treated at this practice. Review the guide for your exact product with your prescriber or pharmacist.