Ashwagandha
Human studies reported between-group improvement in final sleep.
Single-ingredient studies · Human studies · between-group comparison
Publications for this result: 1
Sleep
Studies tied to sleep quality, sleep onset, or nighttime waking.
View Sleep research
Bacopa
Studies with an unspecified organism reported a change with no confirmed comparison group in sleep quality.
Single-ingredient studies · Population not specified · comparator not confirmed
Publications for this result: 1
D-Ribose
Human studies reported a within-group change in sleep.
Single-ingredient studies · Human studies · Includes patient groups · within-group comparison
Publications for this result: 1
GABA
Human studies reported between-group improvement in Sleep quality.
Single-ingredient studies · Human studies · Population not specified · between-group comparison
Publications for this result: 1
Glycine
Studies with an unspecified organism reported a change with no confirmed comparison group in sleep.
Single-ingredient studies · comparator not confirmed
Publications for this result: 1
L-Theanine
Partial research summary
Human studies reported between-group improvement in sleep efficiency.
single- and combination-ingredient studies · Individual ingredient effects cannot be separated · Human studies · Includes patient groups · between-group comparison · comparator not confirmed
Publications for this result: 2 (1 awaiting review included)
Lemon Balm
Human studies reported between-group improvement in Insomnia symptoms.
combination-ingredient studies · Individual ingredient effects cannot be separated · Human studies · Includes patient groups · between-group comparison
Publications for this result: 1
Magnesium
Human studies reported between-group improvement in Insomnia symptoms.
Single-ingredient studies · Human studies · Includes patient groups · between-group comparison
Publications for this result: 1
Melatonin
Partial research summary
Human studies reported no clear between-group difference in Sleep duration.
Single-ingredient studies · Human studies · Includes patient groups · Population not specified · between-group comparison
Publications for this result: 2 (1 awaiting review included)
Omega-3
Human studies reported between-group improvement in factor III (frequent dreaming) scores.
combination-ingredient studies · Individual ingredient effects cannot be separated · Human studies · between-group comparison
Publications for this result: 1
Quercetin
Human studies reported no clear between-group difference in sleep quality.
Single-ingredient studies · Human studies · Population not specified · between-group comparison
Publications for this result: 1
Saffron
Studies with an unspecified organism reported between-group improvement in Insomnia symptoms.
Single-ingredient studies · Includes patient groups · between-group comparison
Publications for this result: 1
Valerian
Human studies reported a within-group change in insomnia; while Studies with an unspecified organism reported a change with no confirmed comparison group in insomnia.
Single-ingredient studies · Human studies · Includes patient groups · within-group comparison · comparator not confirmed
Publications for this result: 2
Vitamin B6
Human studies reported between-group improvement in sleep quality.
Single-ingredient studies · Human studies · Includes patient groups · between-group comparison
Publications for this result: 1
Other research records (6)
The counts above cover the selected topic only. This section also includes other topics, research without a confirmed comparison, animal or cell studies, and findings whose interpretation is held.
5-HTP
View Sleep researchSome findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
Publications for this result: 1 (1 awaiting review included)
Caffeine
View Sleep researchSome findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
Creatine
View Sleep researchSome findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
Ginkgo
View Sleep researchSome findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
Publications for this result: 1 (1 awaiting review included)
Rhodiola
View Sleep researchSome findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
Publications for this result: 1 (1 awaiting review included)
Vitamin E
View Sleep researchSome findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
How to read this topic
Sleep onset, sleep duration, or the following day?
A sleep questionnaire score and hours slept are different measurements. A change in one does not establish a change in daytime fatigue or total sleep time.
People with chronic insomnia, healthy adults, and shift workers may represent different research questions. Start with studies using similar conditions and observation periods.