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  1. Article ; Online: Assessing the potential for drug interactions and long term safety of melatonin for the treatment of insomnia in children with autism spectrum disorder.

    Zisapel, Nava

    Expert review of clinical pharmacology

    2022  Volume 15, Issue 2, Page(s) 175–185

    Abstract: Introduction: Melatonin preparations are emerging first-line pharmacotherapy for insomnia in children and adolescents with autism spectrum disorder (ASD), but quality, formulation, consistency, dosing, and limited long-term safety data are of concern. ... ...

    Abstract Introduction: Melatonin preparations are emerging first-line pharmacotherapy for insomnia in children and adolescents with autism spectrum disorder (ASD), but quality, formulation, consistency, dosing, and limited long-term safety data are of concern. The recent approval of pediatric-appropriate prolonged-release melatonin (Ped-PRM) addresses these aspects.
    Areas covered: A systematic search of PubMed and web of science for prospective, randomized, and controlled trials (RCTs) of melatonin preparations vs placebo in children and adolescents with ASD and the European public assessment report on Ped-PRM was conducted.
    Expert opinion: Melatonin is rapidly absorbed and undergoes first pass hepatic metabolism by cytochrome CYP1A2; over 80% is excreted in the urine as 6-sulfatoxymelatonin (inactive). Immediate-release melatonin (IRM) is short-acting (3-4 h), whereas PRM provides therapeutic levels throughout the night. Drugs interacting with CYP1A2 are likely to slow-down melatonin metabolism. High variability in bioavailability among subjects calls for dose optimization. Melatonin was essentially safe for short-term use (up to 3 months). Long-term data available for Ped-PRM demonstrate fatigue (6.3%), somnolence (6.3%), and mood swings (4.2%) with no evidence of effects on height, BMI, or pubertal development, tolerance or withdrawal effects following long-term use of this product. Studies on long-term safety of IRM and oversight of melatonin supplement manufacture are warranted.
    MeSH term(s) Adolescent ; Autism Spectrum Disorder/drug therapy ; Child ; Delayed-Action Preparations/therapeutic use ; Drug Interactions ; Humans ; Melatonin/adverse effects ; Sleep Initiation and Maintenance Disorders/drug therapy ; Sleep Initiation and Maintenance Disorders/etiology
    Chemical Substances Delayed-Action Preparations ; Melatonin (JL5DK93RCL)
    Language English
    Publishing date 2022-03-17
    Publishing country England
    Document type Journal Article ; Review
    ISSN 1751-2441
    ISSN (online) 1751-2441
    DOI 10.1080/17512433.2022.2053520
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: New perspectives on the role of melatonin in human sleep, circadian rhythms and their regulation.

    Zisapel, Nava

    British journal of pharmacology

    2018  Volume 175, Issue 16, Page(s) 3190–3199

    Abstract: In mammals, a central circadian clock, located in the suprachiasmatic nuclei (SCN) of the hypothalamus, tunes the innate circadian physiological rhythms to the ambient 24 h light-dark cycle to invigorate and optimize the internal temporal order. The SCN- ... ...

    Abstract In mammals, a central circadian clock, located in the suprachiasmatic nuclei (SCN) of the hypothalamus, tunes the innate circadian physiological rhythms to the ambient 24 h light-dark cycle to invigorate and optimize the internal temporal order. The SCN-activated, light-inhibited production of melatonin conveys the message of darkness to the clock and induces night-state physiological functions, for example, sleep/wake blood pressure and metabolism. Clinically meaningful effects of melatonin treatment have been demonstrated in placebo-controlled trials in humans, particularly in disorders associated with diminished or misaligned melatonin rhythms, for example, circadian rhythm-related sleep disorders, jet lag and shift work, insomnia in children with neurodevelopmental disorders, poor (non-restorative) sleep quality, non-dipping nocturnal blood pressure (nocturnal hypertension) and Alzheimer's disease (AD). The diminished production of melatonin at the very early stages of AD, the role of melatonin in the restorative value of sleep (perceived sleep quality) and its sleep-anticipating effects resulting in attenuated activation of certain brain networks are gaining a new perspective as the role of poor sleep quality in the build-up of β amyloid, particularly in the precuneus, is unravelled. As a result of the recently discovered relationship between circadian clock, sleep and neurodegeneration, new prospects of using melatonin for early intervention, to promote healthy physical and mental ageing, are of prime interest in view of the emerging link to the aetiology of Alzheimer's disease. LINKED ARTICLES: This article is part of a themed section on Recent Developments in Research of Melatonin and its Potential Therapeutic Applications. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v175.16/issuetoc.
    MeSH term(s) Animals ; Cardiovascular Diseases/drug therapy ; Cardiovascular Diseases/metabolism ; Circadian Rhythm/physiology ; Humans ; Melatonin/physiology ; Melatonin/therapeutic use ; Nervous System Diseases/drug therapy ; Nervous System Diseases/metabolism ; Sleep/physiology ; Sleep Wake Disorders/drug therapy ; Sleep Wake Disorders/metabolism
    Chemical Substances Melatonin (JL5DK93RCL)
    Language English
    Publishing date 2018-01-15
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 80081-8
    ISSN 1476-5381 ; 0007-1188
    ISSN (online) 1476-5381
    ISSN 0007-1188
    DOI 10.1111/bph.14116
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Paediatric use of melatonin: Letter to the Editor regarding the manuscript "Current role of melatonin in pediatric neurology:Clinical recommendations" by Bruni et al. Eur J Paediatr Neurol. 2015 Mar;19(2):122-33.

    Zisapel, Nava

    European journal of paediatric neurology : EJPN : official journal of the European Paediatric Neurology Society

    2016  Volume 21, Issue 2, Page(s) 418–419

    MeSH term(s) Child ; Humans ; Melatonin ; Neurology
    Chemical Substances Melatonin (JL5DK93RCL)
    Language English
    Publishing date 2016-08-02
    Publishing country England
    Document type Letter ; Comment
    ZDB-ID 1397146-3
    ISSN 1532-2130 ; 1090-3798
    ISSN (online) 1532-2130
    ISSN 1090-3798
    DOI 10.1016/j.ejpn.2016.07.013
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Safety of melatonin.

    Zisapel, Nava

    Journal of paediatrics and child health

    2015  Volume 51, Issue 8, Page(s) 840–841

    MeSH term(s) Epilepsy/drug therapy ; Humans ; Melatonin/therapeutic use ; Sleep/drug effects ; Sleep Wake Disorders/drug therapy
    Chemical Substances Melatonin (JL5DK93RCL)
    Language English
    Publishing date 2015-08
    Publishing country Australia
    Document type Comment ; Letter
    ZDB-ID 1024476-1
    ISSN 1440-1754 ; 1034-4810
    ISSN (online) 1440-1754
    ISSN 1034-4810
    DOI 10.1111/jpc.12963
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Current Phase II investigational therapies for insomnia.

    Zisapel, Nava

    Expert opinion on investigational drugs

    2015  Volume 24, Issue 3, Page(s) 401–411

    Abstract: Introduction: Insomnia is typified by a difficulty in sleep initiation, maintenance and/or quality (non-restorative sleep) resulting in significant daytime distress.: Areas covered: This review summarizes the available efficacy and safety data for ... ...

    Abstract Introduction: Insomnia is typified by a difficulty in sleep initiation, maintenance and/or quality (non-restorative sleep) resulting in significant daytime distress.
    Areas covered: This review summarizes the available efficacy and safety data for drugs currently in the pipeline for treating insomnia. Specifically, the authors performed MEDLINE and internet searches using the keywords 'Phase II' and 'insomnia'. The drugs covered target GABAA (zaleplon-CR, lorediplon, EVT-201), orexin (filorexant, MIN-202), histamine-H1 (LY2624803), serotonin 5-HT2A (ITI-007), melatonin/serotonin5-HT1A (piromelatine) and melatonin (indication expansions of prolonged-release melatonin and tasimelteon for pediatric sleep and circadian rhythm disorders) receptors.
    Expert opinion: Low-priced generic environments and high development costs limit the further development of drugs that treat insomnia. However, the bidirectional link between sleep and certain comorbidities may encourage development of specific drugs for comorbid insomnia. New insomnia therapies will most likely move away from GABAAR receptors' modulation to more subtle neurological pathways that regulate the sleep-wake cycle.
    MeSH term(s) Clinical Trials, Phase II as Topic ; Drug Design ; Drugs, Investigational/adverse effects ; Drugs, Investigational/pharmacology ; Drugs, Investigational/therapeutic use ; GABA Modulators/adverse effects ; GABA Modulators/pharmacology ; GABA Modulators/therapeutic use ; Humans ; Hypnotics and Sedatives/adverse effects ; Hypnotics and Sedatives/pharmacology ; Hypnotics and Sedatives/therapeutic use ; Receptors, GABA-A/drug effects ; Receptors, GABA-A/metabolism ; Sleep Initiation and Maintenance Disorders/drug therapy ; Sleep Initiation and Maintenance Disorders/physiopathology
    Chemical Substances Drugs, Investigational ; GABA Modulators ; Hypnotics and Sedatives ; Receptors, GABA-A
    Language English
    Publishing date 2015-03
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1182884-5
    ISSN 1744-7658 ; 0967-8298 ; 1354-3784
    ISSN (online) 1744-7658
    ISSN 0967-8298 ; 1354-3784
    DOI 10.1517/13543784.2015.987340
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Drugs for insomnia.

    Zisapel, Nava

    Expert opinion on emerging drugs

    2012  Volume 17, Issue 3, Page(s) 299–317

    Abstract: Introduction: Sleep is a vital neurochemical process involving sleep-promoting and arousal centers in the brain. Insomnia is a pervasive disorder characterized by difficulties in initiating or maintaining or non-refreshing (poor quality) sleep and ... ...

    Abstract Introduction: Sleep is a vital neurochemical process involving sleep-promoting and arousal centers in the brain. Insomnia is a pervasive disorder characterized by difficulties in initiating or maintaining or non-refreshing (poor quality) sleep and clinically significant daytime distress. Insomnia is more prevalent in women and old age and puts sufferers at significant physical and mental health risks. This review summarizes published data on the current and emerging insomnia drug classes, rationale for development and associated risks/benefits. (Summary of Product Characteristics and Medline search on "hypnotic" or specific drug names and "Insomnia").
    Areas covered: GABA(A) receptor modulators facilitate sleep onset and some improve maintenance but increase risk of dependence, memory, cognitive and psychomotor impairments, falls, accidents and mortality. Melatonin receptor agonists improve quality of sleep and/or sleep onset but response may develop over several days. They have more benign safety profiles and are indicated for milder insomnia, longer usage and (prolonged release melatonin) older patients. Histamine H-1 receptor antagonists improve sleep maintenance but their effects on cognition, memory and falls remain to be demonstrated. Late-stage pipeline orexin OX1/OX2 and serotonin 5HT2A receptor antagonists may hold the potential to address several unmet needs in insomnia pharmacotherapy but safety issues cast some doubts over their future.
    Expert opinion: Current and new insomnia drugs in the pipeline target different sleep regulating mechanisms and symptoms and have different tolerability profiles. Drug selection would ideally be based on improvement in the quality of patients' sleep, overall quality of life and functional status weighed against risk to the individual and public health.
    MeSH term(s) Clinical Trials as Topic ; Drug Discovery ; GABA Modulators/administration & dosage ; GABA Modulators/adverse effects ; GABA Modulators/economics ; GABA Modulators/therapeutic use ; Histamine H1 Antagonists/administration & dosage ; Histamine H1 Antagonists/adverse effects ; Histamine H1 Antagonists/economics ; Histamine H1 Antagonists/therapeutic use ; Humans ; Hypnotics and Sedatives/administration & dosage ; Hypnotics and Sedatives/adverse effects ; Hypnotics and Sedatives/economics ; Hypnotics and Sedatives/therapeutic use ; Intracellular Signaling Peptides and Proteins/antagonists & inhibitors ; Marketing ; Neuropeptides/antagonists & inhibitors ; Orexins ; Receptors, GABA-A/metabolism ; Receptors, Melatonin/agonists ; Serotonin 5-HT2 Receptor Antagonists/administration & dosage ; Serotonin 5-HT2 Receptor Antagonists/adverse effects ; Serotonin 5-HT2 Receptor Antagonists/economics ; Serotonin 5-HT2 Receptor Antagonists/therapeutic use ; Sleep Initiation and Maintenance Disorders/drug therapy ; Treatment Outcome
    Chemical Substances GABA Modulators ; Histamine H1 Antagonists ; Hypnotics and Sedatives ; Intracellular Signaling Peptides and Proteins ; Neuropeptides ; Orexins ; Receptors, GABA-A ; Receptors, Melatonin ; Serotonin 5-HT2 Receptor Antagonists
    Language English
    Publishing date 2012-09
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2061369-6
    ISSN 1744-7623 ; 1472-8214
    ISSN (online) 1744-7623
    ISSN 1472-8214
    DOI 10.1517/14728214.2012.690735
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: [Controlled release melatonin (Circadin) in the treatment of insomnia in older patients: efficacy and safety in patients with history of use and non-use of hypnotic drugs].

    Zisapel, Nava

    Harefuah

    2009  Volume 148, Issue 5, Page(s) 337–41, 348

    Abstract: Circadin is a prolonged-release 2 mg melatonin formulation which, when taken before bedtime, mimics the physiological pattern of the endogenous hormone excreted during the night. It was approved by the EU-EMEA in June 2007 for the short-term treatment of ...

    Abstract Circadin is a prolonged-release 2 mg melatonin formulation which, when taken before bedtime, mimics the physiological pattern of the endogenous hormone excreted during the night. It was approved by the EU-EMEA in June 2007 for the short-term treatment of primary insomnia characterized by poor quality of sleep in patients aged 55 or over. Placebo controlled clinical trials demonstrated, beyond the shortening of sleep Latency seen with traditional hypnotics, concomitant improvements in sleep quality and next day alertness and subsequently, quality of life. In contrast to traditional sedative hypnotics, Circadin has shown no evidence of impairing cognitive and psychomotor skills, of rebound, dependence or abuse potential and no significant adverse events compared to placebo. It can be used concomitantly with most medications but may potentiate the effects of GABA-A receptor modulators. Analyses presented here show that Circadin has comparable efficacy and safety in patients with and without history of hypnotic drug use.
    MeSH term(s) Aged ; Central Nervous System Depressants/therapeutic use ; Delayed-Action Preparations/therapeutic use ; Humans ; Hypnotics and Sedatives/therapeutic use ; Melatonin/administration & dosage ; Melatonin/therapeutic use ; Safety ; Sleep/drug effects ; Sleep/physiology ; Sleep Initiation and Maintenance Disorders/drug therapy ; Sleep Initiation and Maintenance Disorders/physiopathology ; Sleep Initiation and Maintenance Disorders/psychology
    Chemical Substances Central Nervous System Depressants ; Delayed-Action Preparations ; Hypnotics and Sedatives ; Melatonin (JL5DK93RCL)
    Language Hebrew
    Publishing date 2009-05
    Publishing country Israel
    Document type English Abstract ; Journal Article ; Review
    ZDB-ID 953872-0
    ISSN 0017-7768
    ISSN 0017-7768
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Prolonged-release formulation of melatonin (Circadin) for the treatment of insomnia.

    Lemoine, Patrick / Zisapel, Nava

    Expert opinion on pharmacotherapy

    2012  Volume 13, Issue 6, Page(s) 895–905

    Abstract: Introduction: Insomnia is common among the elderly. The use of hypnotic drugs in elderly patients is frequently criticized owing to dependency, cognitive impairments, falls and withdrawal effects. The production of melatonin, a physiological sleep and ... ...

    Abstract Introduction: Insomnia is common among the elderly. The use of hypnotic drugs in elderly patients is frequently criticized owing to dependency, cognitive impairments, falls and withdrawal effects. The production of melatonin, a physiological sleep and circadian rhythm regulator, declines with age. Prolonged-release melatonin (Circadin®), designed to mimic the endogenous pattern of melatonin production, is licensed for insomnia in patients aged ≥ 55 years.
    Areas covered: This review summarizes published studies on Circadin's efficacy and safety (Summary of Product Characteristics and Medline search on 'Circadin' and 'insomnia').
    Expert opinion: The main significant and clinically relevant benefits are improvements in sleep quality and latency, next-day morning alertness and quality of life. The responses may develop over several days. An oral 2-mg dose once daily, for 3 months, has generally been well tolerated with no rebound, withdrawal or 'hangover' effects and no safety concerns on concomitant therapy with antihypertensive, antidiabetic, lipid-lowering or anti-inflammatory drugs. Untoward effects of hypnotics on cognition, memory, postural stability and sleep structure are not seen with Circadin. Given as a first-line prescription, with 13 weeks' posology and the lack of rebound effects, Circadin has the potential to improve quality of life in insomnia patients aged 55 years and older and avoid long-term use of hypnotics.
    MeSH term(s) Circadian Rhythm/drug effects ; Clinical Trials as Topic ; Delayed-Action Preparations ; Double-Blind Method ; Humans ; Melatonin/administration & dosage ; Melatonin/adverse effects ; Randomized Controlled Trials as Topic ; Sleep Initiation and Maintenance Disorders/drug therapy
    Chemical Substances Delayed-Action Preparations ; Melatonin (JL5DK93RCL)
    Language English
    Publishing date 2012-04
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2001535-5
    ISSN 1744-7666 ; 1465-6566
    ISSN (online) 1744-7666
    ISSN 1465-6566
    DOI 10.1517/14656566.2012.667076
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Sleep, Growth, and Puberty After 2 Years of Prolonged-Release Melatonin in Children With Autism Spectrum Disorder.

    Malow, Beth A / Findling, Robert L / Schroder, Carmen M / Maras, Athanasios / Breddy, John / Nir, Tali / Zisapel, Nava / Gringras, Paul

    Journal of the American Academy of Child and Adolescent Psychiatry

    2020  Volume 60, Issue 2, Page(s) 252–261.e3

    Abstract: Objective: A recent 3-month double-blind, placebo-controlled study demonstrated efficacy and safety of pediatric prolonged-release melatonin (PedPRM) for insomnia in children with autism spectrum disorder. This study examined the long-term effects of ... ...

    Abstract Objective: A recent 3-month double-blind, placebo-controlled study demonstrated efficacy and safety of pediatric prolonged-release melatonin (PedPRM) for insomnia in children with autism spectrum disorder. This study examined the long-term effects of PedPRM treatment on sleep, growth, body mass index, and pubertal development.
    Method: Eighty children and adolescents (2-17.5 years of age; 96% with autism spectrum disorder) who completed the double-blind, placebo-controlled trial were given 2 mg, 5 mg, or 10 mg PedPRM nightly up to 104 weeks, followed by a 2-week placebo period to assess withdrawal effects.
    Results: Improvements in child sleep disturbance and caregiver satisfaction with child sleep patterns, quality of sleep, and quality of life were maintained throughout the 104-week treatment period (p < .001 versus baseline for all). During the 2-week withdrawal placebo period, measures declined compared with the treatment period but were still improved compared with baseline. PedPRM was generally safe; the most frequent treatment-related adverse events were fatigue (6.3%), somnolence (6.3%), and mood swings (4.2%). Changes in mean weight, height, body mass index, and pubertal status (Tanner staging done by a physician) were within normal ranges for age with no evidence of delay in body mass index or pubertal development.
    Conclusion: Nightly PedPRM at optimal dose (2, 5, or 10 mg nightly) is safe and effective for long-term treatment in children and adolescents with autism spectrum disorder and insomnia. There were no observed detrimental effects on children's growth and pubertal development and no withdrawal or safety issues related to the use or discontinuation of the drug.
    Clinical trial registration information: Efficacy and Safety of Circadin in the Treatment of Sleep Disturbances in Children With Neurodevelopment Disabilities; https://clinicaltrials.gov/; NCT01906866.
    MeSH term(s) Adolescent ; Aged, 80 and over ; Autism Spectrum Disorder/drug therapy ; Child ; Double-Blind Method ; Humans ; Melatonin/adverse effects ; Puberty ; Quality of Life ; Sleep ; Treatment Outcome
    Chemical Substances Melatonin (JL5DK93RCL)
    Language English
    Publishing date 2020-01-23
    Publishing country United States
    Document type Journal Article ; Randomized Controlled Trial ; Research Support, N.I.H., Extramural
    ZDB-ID 392535-3
    ISSN 1527-5418 ; 0890-8567
    ISSN (online) 1527-5418
    ISSN 0890-8567
    DOI 10.1016/j.jaac.2019.12.007
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Prolonged release melatonin for improving sleep in totally blind subjects: a pilot placebo-controlled multicenter trial.

    Roth, Thomas / Nir, Tali / Zisapel, Nava

    Nature and science of sleep

    2015  Volume 7, Page(s) 13–23

    Abstract: Introduction: Melatonin, secreted by the pineal gland during the night phase, is a regulator of the biological clock and sleep tendency. Totally blind subjects frequently report severe, periodic sleep problems, with 50%-75% of cases displaying non-24- ... ...

    Abstract Introduction: Melatonin, secreted by the pineal gland during the night phase, is a regulator of the biological clock and sleep tendency. Totally blind subjects frequently report severe, periodic sleep problems, with 50%-75% of cases displaying non-24-hour sleep-wake disorder (N24HSWD) due to inability to synchronize with the environmental day-night cycle. Melatonin immediate-release preparations are reportedly effective in N24HSWD. Here, we studied the efficacy and safety of prolonged-release melatonin (PRM), a registered drug for insomnia, for sleep disorders in totally blind subjects living in normal social environments. The primary endpoint was demonstration of clinically meaningful effects on sleep duration (upper confidence interval [CI] limit >20 minutes whether significant or not) to allow early decision-making on further drug development in this indication.
    Trial registration: ClinicalTrials.gov registry - NCT00972075.
    Methods: In a randomized, double-blind, placebo-controlled proof-of-principle study, 13 totally blind subjects had 2 weeks' placebo run-in, 6 weeks' randomized (1:1) PRM (Circadin(®)) or placebo nightly, and 2 weeks' placebo run-out. Outcome measures included daily voice recorded sleep diary, Clinical Global Impression of Change (CGIC), WHO-Five Well-being Index (WHO-5), and safety.
    Results: Mean nightly sleep duration improved by 43 minutes in the PRM and 16 minutes in the placebo group (mean difference: 27 minutes, 95% CI: -14.4 to 69 minutes; P=0.18; effect size: 0.82) meeting the primary endpoint. Mean sleep latency decreased by 29 minutes with PRM over placebo (P=0.13; effect size: 0.92) and nap duration decreased in the PRM but not placebo group. The variability in sleep onset/offset and latency tended to decrease during PRM but not placebo treatment. The potentially beneficial effects of PRM persisted during the 2 weeks of discontinuation period, consistent with clock stabilizing effects. PRM was well-tolerated, adverse events were of mild or moderate severity and similar between PRM and placebo.
    Conclusion: Nightly use of PRM may potentially improve patient-reported sleep difficulties in totally blind individuals trying to adhere to normal social lifestyle. A larger study powered to demonstrate a statistically significant effect is warranted.
    Language English
    Publishing date 2015-01-29
    Publishing country New Zealand
    Document type Journal Article
    ZDB-ID 2587468-8
    ISSN 1179-1608
    ISSN 1179-1608
    DOI 10.2147/NSS.S71838
    Database MEDical Literature Analysis and Retrieval System OnLINE

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