Youtheory Nighttime Sleep Powder 6 oz.
Analysis updated August 2026 · How Scout scores
At a glance
Summary
This supplement contains a blend of beneficial ingredients such as magnesium citrate, L-Glycine, L-Tryptophan, L-Theanine, 5-HTP, and melatonin, all of which are known to support sleep quality and relaxation. The formulation is clean with minimal additives, although the use of natural lemon-lime flavor could be a concern for those sensitive to non-transparent flavoring agents. Overall, the product is well-formulated with effective ingredients for its intended purpose.
Key ingredients 9
MagnesiumGood
Magnesium is essential for numerous biochemical reactions in the body, including nerve function and muscle relaxation. Magnesium citrate is a highly absorbable form, making it effective for supplementation. It supports sleep quality by promoting relaxation and reducing stress.
Risks
Excessive intake may lead to digestive issues such as diarrhea.
Benefits
Supports muscle and nerve function, and aids in relaxation and sleep quality.
L-GlycineGood
L-Glycine is an amino acid that plays a role in the production of proteins and neurotransmitters. It is known to improve sleep quality by calming the brain and lowering body temperature. It is generally well-tolerated and beneficial for sleep support.
Benefits
Improves sleep quality and supports neurotransmitter function.
L-TryptophanGood
L-Tryptophan is an essential amino acid that serves as a precursor to serotonin, a neurotransmitter that regulates mood and sleep. It is effective in promoting relaxation and improving sleep onset. Its role in serotonin production makes it valuable for mood stabilization.
Risks
Excessive intake may lead to serotonin syndrome when combined with other serotonergic agents.
Benefits
Promotes relaxation and improves sleep onset by increasing serotonin levels.
L-TheanineGood
L-Theanine is an amino acid found in tea leaves, known for its calming effects without causing drowsiness. It enhances sleep quality by promoting relaxation and reducing stress. It is often used to improve focus and mental clarity.
Benefits
Promotes relaxation and enhances sleep quality without causing drowsiness.
5-HTPGood
5-HTP is a precursor to serotonin, which is crucial for mood and sleep regulation. It is effective in improving sleep quality and reducing symptoms of depression. Its ability to increase serotonin levels makes it beneficial for mood enhancement.
Risks
May cause gastrointestinal issues or serotonin syndrome if taken in excess.
Benefits
Improves sleep quality and mood by increasing serotonin levels.
MelatoninGood
Melatonin is a hormone that regulates the sleep-wake cycle, making it effective for improving sleep onset and quality. It is commonly used to treat sleep disorders and jet lag. Its natural occurrence in the body makes it a safe supplement for sleep support.
Risks
Excessive use may lead to daytime drowsiness or hormonal imbalances.
Benefits
Regulates sleep-wake cycle and improves sleep onset and quality.
Silicon DioxideNeutral
Silicon dioxide is used as an anti-caking agent to prevent clumping in powdered products. It is generally recognized as safe when used in small amounts. It does not contribute to the nutritional value of the product.
See more about Silicon Dioxide →Xantham GumNeutral
Xantham gum is a common thickening agent used to improve texture and stability in food products. It is derived from fermented sugars and is generally considered safe. It does not provide nutritional benefits but is useful for maintaining product consistency.
Risks
May cause digestive issues in sensitive individuals when consumed in large amounts.
Natural Lemon-Lime FlavorBad
Natural flavors are often used to enhance taste but can be a catch-all term for various additives. The lack of transparency in their composition can be concerning for those with allergies or sensitivities. They do not provide nutritional benefits and may contain unwanted additives.
Risks
Potential allergens or additives may be present without clear labeling.
Processing
Processed Culinary Ingredients
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