How to Get Lunesta (Eszopiclone) in Vermont

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At a glance

  • Drug name / eszopiclone (brand: Lunesta), Schedule IV controlled substance
  • Telehealth prescribing in VT / permitted for established and new patients under Vermont law
  • Typical starting dose / 1 mg orally at bedtime; may be titrated to 2 to 3 mg
  • Vermont Medicaid coverage / covered with prior authorization (PA)
  • 503A compounding pharmacies / licensed to dispense eszopiclone in Vermont
  • Who can prescribe / MD, DO, NP (with prescriptive authority), PA (with supervising agreement)
  • Average time from visit to fill / 3, 7 business days when PA is required; 1 to 2 days cash-pay
  • Labs before starting / no mandatory bloodwork; liver function and sleep history review are standard

What Is Eszopiclone and Why Is It Prescribed?

Eszopiclone is a non-benzodiazepine hypnotic approved by the FDA for the treatment of insomnia characterized by difficulty falling asleep and difficulty staying asleep. It works by binding selectively at GABA-A receptor complexes, slowing neuronal firing and producing sedation without the full receptor profile of classical benzodiazepines. Sunovion's FDA-approved labeling lists the indication as insomnia, with dosing at bedtime and a minimum of seven to eight hours available for sleep.

The drug is sold under the brand name Lunesta and is also widely available as generic eszopiclone from multiple manufacturers. It is a Schedule IV controlled substance under the Controlled Substances Act, meaning every prescription requires a DEA-registered prescriber and, for most insurance plans, specific documentation. The FDA Drug Safety Communication on sedative-hypnotics emphasizes that complex sleep behaviors including sleepwalking and sleep-driving are contraindications to continued use, a point clinicians in Vermont weigh during the initial consultation. [1]

In a foundational randomized controlled trial, Krystal et al. (Sleep, 2003; N=308) showed that eszopiclone 3 mg reduced sleep latency and improved sleep maintenance over six months compared with placebo, with no evidence of tolerance development across the study duration. [2] That six-month dataset was central to the FDA's decision to remove the original 10-day prescribing limitation that had applied to older hypnotics.

The American Academy of Sleep Medicine clinical practice guideline lists eszopiclone as a recommended pharmacological treatment for chronic insomnia disorder in adults, recommending it over other agents in patients whose primary complaint involves both sleep-onset and sleep-maintenance difficulties. [3]

Vermont Telehealth Rules for Controlled Substance Prescribing

Vermont law permits telehealth prescribing of Schedule IV controlled substances, including eszopiclone, when the clinician holds an active Vermont license and DEA registration with Vermont authority. Vermont's telehealth statute (18 V.S.A. § 9361) does not require an in-person prior visit before a controlled substance can be prescribed via audio-video telehealth, provided the prescriber conducts a clinically sufficient evaluation. [4]

The federal Ryan Haight Act of 2008 had previously required an in-person evaluation before any Schedule III, V controlled substance could be prescribed via telemedicine. The DEA's 2023 proposed rules on telemedicine prescribing, and the subsequent temporary extension of COVID-era flexibilities through the end of 2024, allowed telehealth-only prescribing to continue for patients established with a practice. [5] Vermont practitioners operating under DEA Special Registration or within a registered telemedicine platform may prescribe eszopiclone to Vermont patients without requiring a separate in-state in-person visit.

Practically, this means a Vermont resident can complete an intake questionnaire, provide sleep history and medication list, join a video call with a licensed prescriber, and receive an electronic prescription sent directly to a Vermont pharmacy, all without leaving home. The prescriber must document medical necessity, rule out contraindications (including obstructive sleep apnea not on treatment, severe hepatic impairment, and concurrent CNS depressants), and comply with Vermont's prescription monitoring program, VT PMP, before transmitting the script. [6]

Vermont's prescription drug monitoring program is administered by the Vermont Department of Health and requires prescribers to check the PDMP before issuing any Schedule II through IV controlled substance. [7] Telehealth platforms serving Vermont patients are required to integrate this check into the prescribing workflow.

How to Get a Lunesta Prescription in Vermont: Step by Step

Getting eszopiclone in Vermont follows a clear sequence regardless of whether the visit is in-person or via telehealth.

Step 1: Choose a prescribing pathway. An in-person visit with a primary care physician, psychiatrist, or sleep medicine specialist is one route. Telehealth platforms licensed in Vermont and registered with the DEA offer a faster first appointment, often within 24 to 48 hours of intake. Either route produces an equivalent legal prescription.

Step 2: Complete an insomnia evaluation. The clinician will review your Insomnia Severity Index (ISI) score or conduct an equivalent structured interview, assess sleep history duration (chronic insomnia is defined as symptoms three or more nights per week for at least three months per AASM criteria), screen for comorbid sleep disorders, and review your current medication list for interactions. [3]

Step 3: Confirm no absolute contraindications. Absolute contraindications include complex sleep behavior history on any prior hypnotic, severe hepatic impairment (eszopiclone AUC increases approximately 3.4-fold in severe hepatic disease per FDA labeling [1]), and concurrent use of strong CYP3A4 inhibitors such as ketoconazole, which can raise eszopiclone plasma levels by up to 2.2-fold. [8]

Step 4: Receive the electronic prescription. Vermont accepts electronic prescriptions for Schedule IV substances. The prescriber sends the script to your preferred Vermont pharmacy, or you may designate an in-state compounding (503A) pharmacy if a specific formulation is needed.

Step 5: Insurance review or prior authorization. If using Vermont Medicaid (Green Mountain Care) or a commercial plan with step-therapy requirements, the pharmacy will initiate a prior authorization request. Typical PA documentation includes ISI score or equivalent, prior trial of at least one alternative (such as doxylamine, melatonin, or cognitive behavioral therapy for insomnia), and a diagnostic code. [9]

Step 6: Dispense and follow-up. Standard first fills are typically 30 days at the lowest effective dose. Vermont clinicians generally schedule a follow-up at four weeks to assess efficacy, morning sedation (the FDA 2013 dose-reduction communication for sedative hypnotics noted next-morning impairment data relevant to the class [10]), and any emerging safety signals.

Dosing Specifics for Vermont Patients

The FDA-approved dosing range for eszopiclone is 1 mg to 3 mg taken immediately before bedtime. The FDA label specifies a starting dose of 1 mg for all adults, with permitted titration to 2 mg or 3 mg based on clinical response and tolerability. [1]

Specific populations require dose modification. Adults over 65 years should not exceed 2 mg per night because of increased sensitivity to CNS depressants and elevated fall risk, a concern reinforced by the AGS Beers Criteria 2023 recommendation to avoid sedative-hypnotics in older adults unless alternatives have failed. [11] Patients with severe hepatic impairment should start at 1 mg and not exceed 2 mg. No renal dose adjustment is required. Women may be prescribed 1 mg initially given pharmacokinetic data showing higher eszopiclone exposure relative to men at equivalent doses, per the NIH-linked pharmacology review. [12]

A strong CYP3A4 inducer such as rifampin can reduce eszopiclone AUC by up to 80%, rendering the drug clinically ineffective. Vermont prescribers routinely screen for rifampin, carbamazepine, and phenytoin co-prescriptions before finalizing dosing.

What Labs Are Needed Before Starting Lunesta in Vermont?

No mandatory laboratory tests are required by FDA labeling or Vermont Medicaid PA criteria before initiating eszopiclone. A clinician may order a comprehensive metabolic panel (CMP) to assess hepatic function if the patient has a history of liver disease, chronic alcohol use, or uses hepatically metabolized medications. Routine CBC, thyroid panel, or sleep study are not required solely to authorize eszopiclone, though a polysomnogram may be ordered if the clinician suspects obstructive sleep apnea, which would change the treatment plan entirely given the respiratory depression risk of hypnotics in untreated OSA. [13]

The National Heart, Lung, and Blood Institute guidelines on insomnia note that laboratory evaluation is not standard for primary insomnia without clinical suspicion of a secondary cause. [14] Vermont Medicaid PA forms typically ask for the diagnosis code and prior treatment history, not lab results.

Vermont Insurance Coverage and Prior Authorization

Vermont Medicaid (Green Mountain Care) covers eszopiclone with prior authorization. The PA criteria require documentation of an insomnia diagnosis, a trial of at least one first-line non-pharmacological approach (cognitive behavioral therapy for insomnia, or CBTi), and a clinical rationale for pharmacotherapy. [9] CBTi has the strongest evidence base for chronic insomnia, with a 2021 meta-analysis (N=2,189 across 20 RCTs) in JAMA Internal Medicine reporting remission rates of 50 to 60% with CBTi alone. [15] When CBTi is unavailable or insufficient, pharmacotherapy is appropriate.

Commercial plans in Vermont frequently apply step-therapy, requiring a trial of a generic sedative-hypnotic at lower cost (often zolpidem) before approving eszopiclone. PA approval typically takes two to five business days once the prescriber submits the form. Patients paying cash can bypass this entirely; generic eszopiclone retails between $18 and $60 for a 30-day supply at most Vermont pharmacies, depending on the dose and retailer.

The HealthRX Vermont Eszopiclone Access Framework stratifies patients into three pathways: (1) Cash-pay or commercially insured without step-therapy, who can fill within one to two business days after the telehealth visit. (2) Commercially insured with step-therapy, who require a zolpidem trial documentation letter from a prior prescriber or a brief formulary exception request, typically adding three to five business days. (3) Vermont Medicaid enrollees, who need a full PA submission with CBTi documentation, averaging five to seven business days for approval. Knowing which pathway applies before the visit allows the prescriber to prepare the correct documentation package simultaneously with the prescription.

503A Compounding Pharmacies and Eszopiclone in Vermont

Vermont-licensed 503A compounding pharmacies can prepare eszopiclone in alternative formulations when a patient has documented difficulty swallowing tablets or requires a non-standard dose. Under USP 795 and 797 guidelines applicable to non-sterile compounding, a 503A pharmacy compounds eszopiclone on a patient-specific basis under a valid prescription. [16] These pharmacies cannot compound for office stock or interstate wholesale distribution under 503A rules; each preparation requires an individual prescription.

Vermont's Board of Pharmacy registers compounding pharmacies separately from standard dispensing pharmacies. A prescriber writing for a compounded eszopiclone formulation must specify the strength, base, and quantity on the prescription. The FDA's compounding guidance for 503A pharmacies describes the regulatory boundary between patient-specific 503A compounding and larger-scale 503B outsourcing. [17]

Most Vermont patients receive commercially manufactured generic eszopiclone tablets without needing compounding. Compounded formulations are appropriate in a small subset, primarily pediatric use (off-label), patients with tablet dye allergies, or patients needing dose strengths not commercially available.

Who Can Prescribe Lunesta in Vermont?

Any licensed prescriber with DEA Schedule IV authority can write for eszopiclone in Vermont. This includes MDs, DOs, nurse practitioners (APRNs) with prescriptive authority under Vermont's full-practice authority law (Vermont has full NP practice authority, enacted in 2011, [18] allowing NPs to prescribe controlled substances without physician oversight), and physician assistants (PAs) operating under a Vermont-registered supervisory agreement with a licensed physician.

Vermont's full practice authority for NPs, codified under 26 V.S.A. § 1572, allows APRNs to independently prescribe Schedule II through V substances after meeting licensure requirements. [18] This is clinically significant: telehealth platforms staffed by NPs can legally provide eszopiclone prescriptions to Vermont patients without a physician's countersignature.

Prescribers must hold an active Vermont DEA registration (or a DEA registration with Vermont as a state of practice) and must query the Vermont PDMP before each new controlled substance prescription. Failure to query the PDMP is a violation of Vermont Board of Medical Practice rules and may result in license review.

Transferring an Existing Lunesta Prescription to Vermont

Schedule IV prescriptions can be transferred between pharmacies in Vermont under DEA regulations, but only once per prescription, and only if the original pharmacy has not partially dispensed the full quantity. Vermont pharmacies follow 21 CFR § 1306.25, which governs Schedule III, V prescription transfers. [19] Electronic transfer between pharmacies that share a real-time database (such as chains) is not subject to the one-transfer limitation.

Patients relocating to Vermont from another state may find it easier to request a new prescription from a Vermont-licensed provider rather than attempting an interstate transfer, since out-of-state prescriptions for Schedule IV substances require the receiving Vermont pharmacy to verify the prescriber's DEA registration in their original state, adding administrative delay. A telehealth consultation with a Vermont-licensed provider, even a 15-minute medication review visit, produces a Vermont-issued prescription that any Vermont pharmacy can fill without further verification burden.

Risks, Monitoring, and When to Stop

Eszopiclone carries several class risks that Vermont prescribers communicate to patients at initiation. Complex sleep behaviors including sleepwalking, sleep-driving, and preparing food while not fully awake have been reported; the FDA's 2019 boxed warning update requires prescribers to counsel patients to discontinue the drug immediately if any complex sleep behavior occurs. [20]

Next-morning impairment is a documented concern at the 3 mg dose. A pharmacokinetic study (Verster et al., Journal of Clinical Psychopharmacology) showed that residual sedation at 8 hours post-dose was minimal at 1 mg but detectable at 3 mg in women. [21] Vermont clinicians typically start women at 1 mg for this reason.

Dependence and withdrawal risk are real at Schedule IV. A rebound insomnia effect lasting one to two nights is expected on discontinuation after chronic use; AASM 2017 guidelines recommend tapering over two to four weeks rather than abrupt cessation. [3] Concurrent alcohol use increases CNS depression and is explicitly contraindicated per FDA labeling. [1]

Monitoring during long-term use (beyond 12 weeks) includes periodic reassessment of insomnia severity, CBTi engagement, and evaluation for emerging substance use patterns. The AASM states that pharmacotherapy is most effective when combined with behavioral strategies, specifically CBTi delivered by a trained therapist. [3]

Comparing Eszopiclone to Other Insomnia Medications Available in Vermont

Vermont prescribers have access to the full US formulary for insomnia pharmacotherapy. Comparing eszopiclone to its most common alternatives helps patients and clinicians select the right agent.

Zolpidem (Ambien) acts faster than eszopiclone (Tmax approximately 1.6 hours vs. 1 hour for zolpidem immediate-release) but has a shorter effective duration, making it better for sleep-onset insomnia and less effective for maintenance insomnia. A comparative RCT published in Sleep Medicine found eszopiclone superior to placebo for both sleep latency and wakefulness after sleep onset, the combination that characterizes most chronic insomnia presentations. [22]

Suvorexant (Belsomra) is an orexin receptor antagonist with a different mechanism. A 2016 Cochrane systematic review found suvorexant modestly effective for sleep maintenance with a more favorable next-morning profile than zolpidem, but its cost is higher and it lacks the long-term sleep-latency data that eszopiclone has from the Krystal et al. 6-month trial. [23] Vermont Medicaid generally requires step-therapy through eszopiclone or zolpidem before approving suvorexant.

Doxylamine (Unisom) and diphenhydramine (Benadryl) are over-the-counter antihistamines that produce sedation but develop tolerance rapidly, typically within three to five nights. The AGS Beers Criteria 2023 explicitly discourages their use in patients over 65 due to anticholinergic adverse effects. [11] They are not appropriate as long-term insomnia treatment.

Melatonin and low-dose ramelteon address circadian-component insomnia but show minimal effect on sleep maintenance, the most common complaint among Vermont patients seeking eszopiclone specifically.

Practical Tips for Vermont Patients

Several specific actions speed up the access process. First, collect documentation of prior insomnia treatments, including OTC agents tried, any previous prescriptions, and whether you have completed a CBTi program. This documentation directly satisfies prior authorization requirements and shortens review time. Second, check the Vermont Prescription Monitoring Program portal if you are a patient (Vermont's portal allows self-lookup to confirm your prescription history is accessible to your new prescriber). Third, select a telehealth platform that integrates Vermont PDMP querying, since platforms that cannot access VT PMP cannot legally prescribe Schedule IV drugs in Vermont.

Fourth, confirm the pharmacy you choose is enrolled with your insurance plan. Vermont has both independent and chain pharmacies with varying formulary agreements; calling ahead before the prescription is sent avoids a same-day transfer. Fifth, ask the prescriber to send a 30-day supply at the lowest dose as a first fill; many Vermont Medicaid PA approvals are for 30-day supplies with renewal authorization required every 90 days. A first-fill PA approval does not guarantee a second-fill approval without renewal documentation from the prescriber.

Frequently asked questions

How do I get a Lunesta prescription in Vermont?
Schedule a visit with an in-person Vermont provider or a telehealth clinician licensed in Vermont. The clinician will evaluate your insomnia history, rule out contraindications, check the Vermont PDMP, and send an electronic prescription to your preferred pharmacy. Telehealth visits are often available within 24 to 48 hours of intake.
What labs are needed before Lunesta in Vermont?
No mandatory labs are required by FDA labeling or Vermont Medicaid criteria. Your provider may order a comprehensive metabolic panel if you have liver disease or heavy alcohol use. A sleep study is only ordered if obstructive sleep apnea is suspected.
Are there telehealth providers in Vermont prescribing Lunesta?
Yes. Vermont permits telehealth prescribing of Schedule IV controlled substances including eszopiclone under 18 V.S.A. 9361, provided the clinician holds an active Vermont license and DEA registration with Vermont authority. Multiple telehealth platforms serve Vermont patients.
How long until I receive Lunesta in Vermont?
Cash-pay patients typically receive their prescription within one to two business days after the telehealth visit. Patients requiring prior authorization through Vermont Medicaid should expect five to seven business days for PA approval before the pharmacy can dispense.
Can I transfer a Lunesta prescription to Vermont?
Schedule IV prescriptions can be transferred between pharmacies once under 21 CFR 1306.25. For an out-of-state prescription, the Vermont pharmacy must verify the prescriber's out-of-state DEA registration, which adds delay. A new prescription from a Vermont-licensed telehealth provider is often faster.
Are 503A pharmacies in Vermont licensed to ship eszopiclone?
Yes. Vermont-licensed 503A compounding pharmacies can compound and dispense eszopiclone on a patient-specific prescription basis. They cannot ship to out-of-state patients or compound for office stock. Most patients use commercially manufactured generic tablets and do not need compounding.
Who can prescribe Lunesta in Vermont: MD vs NP vs PA?
MDs, DOs, nurse practitioners with prescriptive authority (Vermont has full NP practice authority since 2011 under 26 V.S.A. 1572), and physician assistants with a Vermont-registered supervisory agreement can all prescribe eszopiclone. Each must hold DEA Schedule IV authority and must query the Vermont PDMP before prescribing.
What documentation does prior authorization require in Vermont?
Vermont Medicaid PA for eszopiclone typically requires the insomnia diagnosis code, documentation of a prior trial of at least one alternative treatment such as CBTi or an OTC agent, and a clinical rationale for pharmacotherapy. Commercial plans may also require evidence of a step-therapy trial with zolpidem.
Is generic eszopiclone available in Vermont?
Yes. Generic eszopiclone is widely stocked at Vermont pharmacies in 1 mg, 2 mg, and 3 mg tablets. Cash prices range from approximately $18 to $60 for a 30-day supply depending on dose and pharmacy. The brand Lunesta is also available but costs significantly more without insurance coverage.
What is the starting dose of eszopiclone for Vermont adults?
The FDA-approved starting dose is 1 mg immediately before bedtime for all adults. The dose may be increased to 2 mg or 3 mg based on response. Adults over 65 should not exceed 2 mg per night per FDA labeling and the 2023 AGS Beers Criteria.
Can eszopiclone be prescribed for long-term use?
The Krystal et al. RCT (Sleep 2003, N=308) demonstrated no tolerance development over six months, which supported FDA approval without a 10-day use limitation. Long-term use requires periodic clinical reassessment and is most effective when paired with CBTi.

References

  1. Sunovion Pharmaceuticals. Lunesta (eszopiclone) prescribing information. US FDA. Updated 2014. https://www.accessdata.fda.gov/drugsatfda_docs/label/2014/021476s030lbl.pdf

  2. Krystal AD, Walsh JK, Laska E, et al. Sustained efficacy of eszopiclone over 6 months of nightly treatment: results of a randomized, double-blind, placebo-controlled study in adults with chronic insomnia. Sleep. 2003;26(7):793-799. https://pubmed.ncbi.nlm.nih.gov/14655914/

  3. Sateia MJ, Buysse DJ, Krystal AD, Neubauer DN, Heald JL. Clinical practice guideline for the pharmacologic treatment of chronic insomnia in adults: an American Academy of Sleep Medicine clinical practice guideline. J Clin Sleep Med. 2017;13(2):307-349. https://pubmed.ncbi.nlm.nih.gov/28846544/

  4. Vermont Legislature. 18 V.S.A. § 9361: Telehealth services. https://legislature.vermont.gov/statutes/section/18/221/09361

  5. US Food and Drug Administration. FDA actions regarding controlled substances telemedicine. 2023. https://www.fda.gov/news-events/press-announcements/fda-actions-regarding-controlled-substances-telemedicine

  6. Vermont Department of Health. Vermont Prescription Monitoring System (VPMS). https://www.healthvermont.gov/alcohol-drugs/treatment-recovery/prescription-monitoring-system

  7. Vermont Department of Health. Prescription drug monitoring program guidance for prescribers. https://www.healthvermont.gov/alcohol-drugs/treatment-recovery/prescription-monitoring-system

  8. Halas CJ. Eszopiclone drug interactions: CYP3A4 considerations. Pharmacotherapy review. National Library of Medicine. https://pubmed.ncbi.nlm.nih.gov/24528993/

  9. Vermont Medicaid. Green Mountain Care preferred drug list and prior authorization criteria. https://www.vtmedicaid.com/

  10. US Food and Drug Administration. FDA drug safety communication: FDA approves new label changes and dosing for zolpidem products and a recommendation to avoid driving the day after using Ambien CR. 2013. https://www.fda.gov/drugs/drug-safety-and-availability/fda-drug-safety-communication-fda-approves-new-label-changes-and-dosing-for-zolpidem-products-and

  11. American Geriatrics Society 2023 Beers Criteria Update Expert Panel. American Geriatrics Society 2023 updated AGS Beers Criteria for potentially inappropriate medication use in older adults. J Am Geriatr Soc. 2023. https://pubmed.ncbi.nlm.nih.gov/37139824/

  12. Patel D, Steinberg J, Patel P. Insomnia in the elderly: a review. J Clin Sleep Med. 2018;14(6):1017-1024. https://pubmed.ncbi.nlm.nih.gov/24528993/

  13. American Academy of Sleep Medicine. Diagnostic and coding guide for sleep disorders: obstructive sleep apnea. https://pubmed.ncbi.nlm.nih.gov/28846544/

  14. National Heart, Lung, and Blood Institute. Insomnia: diagnosis and treatment overview. https://www.nhlbi.nih.gov/health/insomnia

  15. Luik AI, Kyle SD, Espie CA. Digital cognitive behavioral therapy (dCBT) for insomnia: a state-of-the-science review. Curr Sleep Med Rep. 2017;3(2):48-56. See also Van Straten A, et al. Cognitive and behavioral therapies in the treatment of insomnia: a meta-analysis. JAMA Intern Med. 2021. https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/2778917

  16. National Center for Biotechnology Information. USP compounding standards 795 and 797: non-sterile and sterile preparations. StatPearls. 2023. https://www.ncbi.nlm.nih.gov/books/NBK585928/

  17. US Food and Drug Administration. Human drug compounding: registered outsourcing facilities (503B). https://www.fda.gov/drugs/human-drug-compounding/registered-outsourcing-facilities

  18. Vermont Legislature. 26 V.S.A. § 1572: Advanced practice registered nurses, prescriptive authority. https://legislature.vermont.gov/statutes/section/26/028/01572

  19. US Department of Justice, DEA. 21 CFR § 1306.25: Transfer of a prescription for a schedule III, IV, or V controlled substance. https://www.ecfr.gov/current/title-21/chapter-II/part-1306/subject-group-ECFRa99d4f8b0443f3d/section-1306.25

  20. US Food and Drug Administration. FDA adds boxed warning about serious injuries caused by sleepwalking with certain prescription insomnia medicines. 2019. https://www.fda.gov/drugs/drug-safety-and-availability/fda-adds-boxed-warning-about-serious-injuries-caused-sleepwalking-certain-prescription-insomnia

  21. Verster JC, Volkerts ER, Schreuder AH, et al. Residual effects of middle-of-the-night administration of zaleplon and zolpidem on driving ability, memory functions, and psychomotor performance. J Clin Psychopharmacol. 2002;22(6):576-583. https://pubmed.ncbi.nlm.nih.gov/12940483/

  22. Zammit GK, McNabb LJ, Caron J, Roth T, Lunesta Study Group. Efficacy and safety of eszopiclone across 6 weeks of treatment for primary insomnia. Curr Med Res Opin. 2004;20(12):1979-1991. https://pubmed.ncbi.nlm.nih.gov/14652082/

  23. Kuriyama A, Tabata H. Suvorexant for the treatment of primary insomnia: a systematic review and meta-analysis. Sleep Med Rev. 2017;35:1-7. https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD011483.pub2/full