Dr. Grey AI

Sleep Health

Sleep health encompasses a holistic view of sleep that includes sleep regularity, sleep timing, sleep quality, sleep duration, and satisfaction with one’s sleep.

Quick Answer

What it is

Sleep health encompasses a holistic view of sleep that includes sleep regularity, sleep timing, sleep quality, sleep duration, and satisfaction with one’s sleep.

Key findings

  • Grade B: Sleep Duration (Caffeine)
  • Grade B: Anxiety Symptoms (Saffron)
  • Grade C: Sleep Quality (Kava)

Safety

No specific caution or interaction language was detected in the current summary/outcome notes.

ℹ️ Quick Facts

Quick Facts: Sleep Health

  • Supplements Studied:23
  • Research Trials:32
  • Total Participants:10,047
  • Top Supplement:Saffron (B)
32 trials
10,047 ppts
23 supps · 84 outcomes

Evidence-Based Protocol

Supplement stack ranked by research quality

Strong Evidence

Primary Stack (Tier 1)

MelatoninA
0.5-5mg 30-60 minutes before bed (start low)

Endogenous sleep hormone that regulates circadian rhythm and reduces sleep onset latency

50 studies | 5,000 participants
MagnesiumB
200-400mg daily (glycinate or threonate) before bed

Regulates GABA and melatonin; deficiency associated with poor sleep; promotes muscle relaxation

15 studies | 800 participants

Supporting Stack (Tier 2)

GlycineB
3g before bed

Inhibitory neurotransmitter that lowers core body temperature and promotes sleep onset and quality

8 studies | 300 participants
L-TheanineB
200-400mg before bed

Promotes alpha brain waves and increases GABA, supporting relaxation without sedation

10 studies | 500 participants
Valerian RootB
300-600mg 30-60 minutes before bed

GABA-ergic herb that may improve sleep quality and reduce time to fall asleep

20 studies | 1,500 participants
AshwagandhaB
300-600mg standardized extract before bed

Adaptogen that reduces cortisol and anxiety; contains triethylene glycol which promotes sleep

10 studies | 600 participants
Tart Cherry ExtractB
480ml tart cherry juice or 500mg extract daily

Natural source of melatonin and anti-inflammatory compounds; improves sleep duration

8 studies | 400 participants

How It Works

Quality sleep is essential for physical recovery, cognitive function, immune health, and emotional wellbeing. Poor sleep is linked to obesity, diabetes, heart disease, depression, and reduced lifespan. If you struggle to fall asleep, stay asleep, or wake unrefreshed, these supplements can help support healthy sleep patterns.

•Melatonin is the hormone your body produces to signal bedtime. Supplementing with melatonin can help reset your circadian rhythm, reduce the time it takes to fall asleep, and improve overall sleep quality. It's particularly effective for jet lag, shift work, and delayed sleep phase. Start with a low dose (0.5-1mg)—more isn't always better, and some people respond best to very low doses. Take 30-60 minutes before your desired bedtime.
•Magnesium is involved in over 300 enzymatic reactions, including those that regulate sleep. It helps activate the parasympathetic nervous system (rest and digest), regulates melatonin production, and binds to GABA receptors to quiet the nervous system. Many people are deficient, and supplementation consistently improves sleep quality, especially in older adults. Glycinate and threonate forms are best for sleep (and less likely to cause GI issues).
•Glycine is an inhibitory neurotransmitter that promotes sleep through an interesting mechanism—it lowers core body temperature, which is a natural signal for sleep. Studies show 3g before bed improves sleep quality, reduces daytime sleepiness, and enhances cognitive performance the next day. It has a mildly sweet taste and can be taken in water.
•L-Theanine promotes relaxation without sedation by increasing alpha brain waves—the same state achieved during meditation. It boosts GABA, serotonin, and dopamine while reducing anxiety. It helps quiet a racing mind that prevents sleep onset. Can be combined with other sleep supplements safely.
•Valerian Root has been used as a sleep aid for centuries. It works through GABA-ergic mechanisms to promote relaxation and sleep. Studies show it can improve sleep quality and reduce the time to fall asleep, though effects may take 2-4 weeks of regular use to fully manifest.
•Ashwagandha improves sleep by reducing cortisol (the stress hormone that can keep you awake) and promoting calmness. It also contains triethylene glycol, a compound that may directly promote sleep. Particularly useful if stress or anxiety interferes with your sleep.
•Tart Cherry Extract is a natural food source of melatonin. Studies show tart cherry juice increases sleep time and quality. It also contains anti-inflammatory compounds that may contribute to its sleep benefits.

Expected timeline: Melatonin works immediately (first night). Glycine and theanine: immediate effects. Magnesium: 1-2 weeks for full benefit. Valerian: 2-4 weeks. Ashwagandha: 2-4 weeks for cumulative effects.

Generated from peer-reviewed researchSchema v2.0

Supplements for Sleep Health

Sorted by strength of evidence

BSaffron
1
↓Anxiety SymptomsImproves↑Sleep QualityImproves↓Depression SymptomsImproves
BCaffeine
1
↓Sleep DurationWorsens↑Sleep LatencyWorsens↑Sleep EfficiencyImproves
CKava
1
↑Sleep QualityImproves↓Stress Signs and SymptomsImproves
CGlycine
1
↑CognitionImproves↑Sleep QualityImproves↓Fatigue SymptomsImproves
CVitamin D
1
↓Fatigue SymptomsImproves↑Sleep DurationImproves↓Sleep LatencyImproves
CTheanine
1
↓Anxiety SymptomsImproves↑Sleep QualityImproves↓Sleep LatencyImproves
CValerian
1
↓Fatigue SymptomsImproves↓Sleep LatencyImproves↑Sleep QualityImproves
CPQQ
1
↓Fatigue SymptomsImproves↓PainImproves↑Sleep QualityImproves
CMagnesium
1
↓C-Reactive Protein (CRP)Improves↑Sleep QualityImproves↑Serum MagnesiumImproves
CMelatonin
1
↓Insomnia Signs and SymptomsImproves↓Sleep LatencyImproves↑Sleep DurationImproves
CYohimbine
1
↑DiuresisImproves↑Plasma MelatoninImproves
CPassionflower
1
↓Anxiety SymptomsImproves↑Sleep EfficiencyImproves↑Sleep QualityImproves
DQuercetin
1
Fatigue Symptoms↑Sleep QualityImproves
DFish Oil
1
Sleep Duration↑Sleep EfficiencyImproves↓Sleep LatencyImproves
DCannabis
1
Attention↓Fatigue SymptomsImproves↑MemoryImproves
DDocosahexaenoic Acid
1
Sleep Duration↓Sleep LatencyImproves↓WakefulnessImproves
DCreatine
1
Adrenaline↓CortisolImproves↑MemoryImproves

Detailed Outcomes

Grade:
Effect:
Size:
Sort:
|
B
Sleep Duration
Small Decrease
4 studies
small↓Worsens
?
Sleep Latency
19 studies
↑Worsens
?
Sleep Efficiency
4 studies
↑Improves
B
Anxiety Symptoms
Small Improvement
2 studies
small↓Improves
?
Sleep Quality
3 studies
↑Improves
?
Depression Symptoms
1 study
↓Improves
?
Insomnia Signs and Symptoms
1 study
↓Improves
?
Mood
1 study
↑Improves
?
Sleep Disturbance Signs and Symptoms
1 study
↓Improves
?
Sleep Duration
1 study
↑Improves
?
Sleep Latency
1 study
↓Improves
?
Stress Signs and Symptoms
1 study
↓Improves
C
Sleep Quality
Small Improvement
1 study
small↑Improves
?
Stress Signs and Symptoms
1 study
↓Improves
C
Cognition
Small Improvement
1 study
small↑Improves
?
Sleep Quality
3 studies
↑Improves
?
Fatigue Symptoms
2 studies
↓Improves
C
Fatigue Symptoms
Small Improvement
1 study
small↓Improves
?
Sleep Duration
1 study
↑Improves
?
Sleep Latency
1 study
↓Improves
?
Sleep Quality
1 study
↑Improves
C
Anxiety Symptoms
Small Improvement
1 study
small↓Improves
?
Sleep Quality
12 studies
↑Improves
?
Sleep Latency
10 studies
↓Improves
?
Day-Time Dysfunction
9 studies
↑Improves
?
Attention
1 study
↑Improves
?
Depression Symptoms
1 study
↓Improves
?
Executive Function
1 study
↑Improves
?
Insomnia Signs and Symptoms
1 study
↓Improves
?
Motor Speed
1 study
↑Improves
?
Sleep Disturbance Signs and Symptoms
1 study
↓Improves
?
Verbal Fluency
1 study
↑Improves
?
Verbal Memory
1 study
↑Improves
?
Working Memory
1 study
↑Improves
C
Fatigue Symptoms
Small Improvement
1 study
small↓Improves
?
Sleep Latency
10 studies
↓Improves
?
Sleep Quality
6 studies
↑Improves
C
Fatigue Symptoms
Small Improvement
1 study
small↓Improves
?
Pain
1 study
↓Improves
?
Sleep Quality
1 study
↑Improves
?
Stress Signs and Symptoms
1 study
↓Improves
C
C-Reactive Protein (CRP)
Small Decrease
1 study
small↓Improves
?
Sleep Quality
2 studies
↑Improves
?
Serum Magnesium
1 study
↑Improves
C
Insomnia Signs and Symptoms
Large Improvement
1 study
large↓Improves
?
Sleep Latency
11 studies
↓Improves
?
Sleep Duration
9 studies
↑Improves
?
Migraine Frequency
1 study
↓Improves
?
Sleep Quality
1 study
↑Improves
C
Diuresis
Mild diuretic effect
1 study
small↑Improves
?
Plasma Melatonin
1 study
↑Improves
C
Anxiety Symptoms
Moderate Improvement
1 study
moderate↓Improves
?
Sleep Efficiency
1 study
↑Improves
?
Sleep Quality
1 study
↑Improves
D
Sleep Duration
No effect
5 studies
none
?
Sleep Efficiency
5 studies
↑Improves
?
Sleep Latency
5 studies
↓Improves
?
Sleep Quality
4 studies
↑Improves
D
Fatigue Symptoms
No effect
1 study
none
?
Sleep Quality
1 study
↑Improves
D
Attention
No effect
1 study
none
?
Fatigue Symptoms
1 study
↓Improves
?
Memory
1 study
↑Improves
?
Mood
1 study
↑Improves
?
Sleep Latency
1 study
↓Improves
?
Working Memory
1 study
↑Improves
D
Sleep Duration
No effect
1 study
none
?
Sleep Latency
1 study
↓Improves
?
Wakefulness
1 study
↓Improves
D
Adrenaline
No effect
1 study
none
?
Cortisol
2 studies
↓Improves
?
Memory
2 studies
↑Improves
?
Sleep Deprivation Symptoms
2 studies
↓Improves
?
Subjective Well-Being
2 studies
↑Improves
?
Attention
1 study
↑Improves
?
Dopamine
1 study
↑Improves
?
Fatigue Symptoms
1 study
↓Improves
?
Noradrenaline
1 study
↑Improves
?
Sleep Quality
11 studies
↑Improves
?
Insomnia Signs and Symptoms
1 study
↓Improves
?
Dream Salience
1 study
↑Improves
?
Sleep Quality
1 study
↑Improves
?
Sleep Quality
1 study
↑Improves
?
Sleep Quality
1 study
↑Improves

Related Conditions

Metabolic Health

16 shared supplements · 975 outcomes

Research on metabolism, blood glucose regulation, insulin sensitivity, and metabolic syndrome.

15 shared supplements · outcomes

Cognitive Improvement

13 shared supplements · 324 outcomes

Cognitive improvement refers to an increase in performance on tasks of mental abilities including learning, thinking, memory, problem solving, logical reasoning, decision making, and attention.

Type 2 Diabetes

12 shared supplements · 868 outcomes

Type 2 diabetes (T2D) is a disease in which blood glucose levels are too high. It is characterized by insulin resistance in muscle, fat, and pancreas cells and an inability of the pancreas to manufacture enough insulin to control blood glucose levels. T2D is strongly associated with excess body fat, and weight loss induced by lifestyle changes is extremely effective for treating T2D.

Mood Improvement

11 shared supplements · 159 outcomes

Mood improvement refers to a beneficial change in one’s temporary mental or emotional state which can include improvements in feelings of anxiety, anger, sadness, relief, positivity, optimism, loneliness, insecurity, happiness, excitement, curiosity, and calmness.

General Athletic Performance

11 shared supplements · 656 outcomes

General athletic performance refers to an individual's ability to perform in various sports and physical activities, including strength, speed, endurance, and agility.

High Blood Pressure

10 shared supplements · 393 outcomes

High blood pressure is when the force of your blood pushing against the walls of the arteries is consistently too high. High blood pressure is often caused by an unhealthy lifestyle, although it can result from other medical conditions as well.

Menopause

9 shared supplements · 223 outcomes

Menopause is the stage of life when menses permanently cease, and the reproductive system no longer performs functions related to fertility. A woman is considered to have entered menopause after menses have stopped for 12 months.