evidence table

Glycine Sleep Onset Randomized Trial Evidence Table

Structured evidence table for Glycine Sleep Onset Randomized Trial, generated from 2 reusable source documents in the Migaku knowledge base.

topicclaimevidence levelcitationsource
Glycine Sleep Onset Randomized TrialConclusion Compared to placebo drink, daily consumption of the herbal supplement for 7 days did not improve any aspect of quality of life or sleep in our pilot study participants with insomnia.2Singh P (2026)Effect of an herbal supplement on quality of life in participants with insomnia: A randomized placebo controlled cross-over pilot trial.
Glycine Sleep Onset Randomized TrialPatients with insomnia frequently rely on herbal supplements to improve sleep and quality of life; however, most supplements do not undergo rigorous testing to determine their effectiveness.2Singh P (2026)Effect of an herbal supplement on quality of life in participants with insomnia: A randomized placebo controlled cross-over pilot trial.
Glycine Sleep Onset Randomized TrialThe primary objective of the pilot trial was to test the effectiveness of the herbal supplement on sleep and quality of life.2Singh P (2026)Effect of an herbal supplement on quality of life in participants with insomnia: A randomized placebo controlled cross-over pilot trial.
Glycine Sleep Onset Randomized TrialFailure to meet the recommended 7-9 hours of restful sleep per night is known to increase the risk of several health conditions, reason why regular and adequate sleep should be seen as a priority instead of an unnecessary commodity easily traded as required by the commitments of our busy lives.4Conti F (2026)Dietary Protocols to Promote and Improve Restful Sleep: A Narrative Review.
Glycine Sleep Onset Randomized TrialWhile both the quantity and the quality of sleep can be largely improved with relatively straightforward practices dictated by good sleep hygiene, emerging research suggests that dietary and supplementation protocols focused on certain foods, nutrients, and biochemical compounds with sleep-promoting properties can act as subsidiary sleep aids in complementing these behavioral changes.4Conti F (2026)Dietary Protocols to Promote and Improve Restful Sleep: A Narrative Review.
Glycine Sleep Onset Randomized TrialThe scope of this narrative review is to summarize the available evidence on the potential benefits of selected nutraceuticals in the context of circadian rhythm and sleep disturbances, namely melatonin, magnesium, omega-3 fatty acids, tart cherry juice, kiwifruit, apigenin, valerian root, L-theanine, glycine, ashwagandha, myoinositol, Rhodiola rosea, and phosphatidylserine.4Conti F (2026)Dietary Protocols to Promote and Improve Restful Sleep: A Narrative Review.
Glycine Sleep Onset Randomized TrialHumans spend approximately one third of their life asleep but, as counterintuitive as it may sound, sleep is far from being a quiet state of inactivity.4Conti F (2026)Dietary Protocols to Promote and Improve Restful Sleep: A Narrative Review.
topicGlycine Sleep Onset Randomized Trial
claimConclusion Compared to placebo drink, daily consumption of the herbal supplement for 7 days did not improve any aspect of quality of life or sleep in our pilot study participants with insomnia.
evidence level2
citationSingh P (2026)
sourceEffect of an herbal supplement on quality of life in participants with insomnia: A randomized placebo controlled cross-over pilot trial.
topicGlycine Sleep Onset Randomized Trial
claimPatients with insomnia frequently rely on herbal supplements to improve sleep and quality of life; however, most supplements do not undergo rigorous testing to determine their effectiveness.
evidence level2
citationSingh P (2026)
sourceEffect of an herbal supplement on quality of life in participants with insomnia: A randomized placebo controlled cross-over pilot trial.
topicGlycine Sleep Onset Randomized Trial
claimThe primary objective of the pilot trial was to test the effectiveness of the herbal supplement on sleep and quality of life.
evidence level2
citationSingh P (2026)
sourceEffect of an herbal supplement on quality of life in participants with insomnia: A randomized placebo controlled cross-over pilot trial.
topicGlycine Sleep Onset Randomized Trial
claimFailure to meet the recommended 7-9 hours of restful sleep per night is known to increase the risk of several health conditions, reason why regular and adequate sleep should be seen as a priority instead of an unnecessary commodity easily traded as required by the commitments of our busy lives.
evidence level4
citationConti F (2026)
sourceDietary Protocols to Promote and Improve Restful Sleep: A Narrative Review.
topicGlycine Sleep Onset Randomized Trial
claimWhile both the quantity and the quality of sleep can be largely improved with relatively straightforward practices dictated by good sleep hygiene, emerging research suggests that dietary and supplementation protocols focused on certain foods, nutrients, and biochemical compounds with sleep-promoting properties can act as subsidiary sleep aids in complementing these behavioral changes.
evidence level4
citationConti F (2026)
sourceDietary Protocols to Promote and Improve Restful Sleep: A Narrative Review.
topicGlycine Sleep Onset Randomized Trial
claimThe scope of this narrative review is to summarize the available evidence on the potential benefits of selected nutraceuticals in the context of circadian rhythm and sleep disturbances, namely melatonin, magnesium, omega-3 fatty acids, tart cherry juice, kiwifruit, apigenin, valerian root, L-theanine, glycine, ashwagandha, myoinositol, Rhodiola rosea, and phosphatidylserine.
evidence level4
citationConti F (2026)
sourceDietary Protocols to Promote and Improve Restful Sleep: A Narrative Review.
topicGlycine Sleep Onset Randomized Trial
claimHumans spend approximately one third of their life asleep but, as counterintuitive as it may sound, sleep is far from being a quiet state of inactivity.
evidence level4
citationConti F (2026)
sourceDietary Protocols to Promote and Improve Restful Sleep: A Narrative Review.

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Source documents

  1. Effect of an herbal supplement on quality of life in participants with insomnia: A randomized placebo controlled cross-over pilot trial.
  2. Dietary Protocols to Promote and Improve Restful Sleep: A Narrative Review.