What Is Yu Sleep?
Yu Sleep is a liquid dietary supplement designed to support nighttime relaxation, healthy sleep patterns, and more restful nights. Instead of relying exclusively on melatonin, it combines a relatively low dose of this sleep-regulating hormone with vitamins, amino acids, magnesium glycinate, and botanical ingredients.
Each 60 mL (2 fl oz) bottle provides approximately 30 servings. The recommended serving is two full droppers (2 mL), taken about 30 minutes before bedtime.
The formula contains 0.9 mg of melatonin per serving, along with vitamins B2 and B6 and a proprietary blend featuring red tart cherry concentrate, magnesium glycinate, apigenin, lemon balm extract, 5-HTP, L-theanine, and GABA.
Yu Sleep is marketed primarily toward adults who experience occasional difficulty falling asleep, nighttime restlessness, or mornings when they do not feel fully refreshed.
Its liquid delivery system may also appeal to people who dislike swallowing tablets or capsules.
But an important distinction needs to be made: while several ingredients have been investigated individually in scientific studies, those findings do not establish that the complete Yu Sleep formula produces the same benefits.
In this Yu Sleep review, we’ll examine the ingredients, research, potential benefits, limitations, pricing, and refund terms to help you decide whether the product deserves a place in your nighttime routine.
How Does Yu Sleep Work?
Sleep depends on several interconnected processes, including circadian timing, accumulated sleep pressure, neurotransmitter activity, environmental conditions, and overall health.
Yu Sleep attempts to support multiple parts of this process through a combination of ingredients associated with sleep timing and relaxation.
Supporting the Sleep-Wake Cycle
Melatonin is a hormone produced naturally by the body, primarily in response to darkness. It helps communicate when nighttime has arrived and contributes to circadian rhythm regulation.
Yu Sleep provides 0.9 mg of supplemental melatonin per serving.
This amount is lower than the doses commonly found in many conventional melatonin supplements, although a lower dose does not automatically make a product more effective or eliminate potential side effects.
Encouraging Bedtime Relaxation
L-theanine, lemon balm, apigenin, magnesium glycinate, and GABA are included because of their associations with nervous system activity and relaxation.
Some have preliminary or moderately supportive human research, while others have considerably weaker evidence for improving sleep.
The manufacturer’s approach is to combine them into a single evening formula rather than relying on one primary ingredient.
Supporting Neurotransmitter Pathways
The formula also contains 5-HTP, a compound involved in serotonin production, along with vitamin B6, which participates in several neurotransmitter-related biochemical processes.
However, influencing a biological pathway does not necessarily translate into measurable improvements in sleep quality.
The finished formula’s clinical effectiveness would ideally need to be demonstrated through appropriately designed human trials.
Does Liquid Delivery Make a Difference?
Yu Sleep uses a liquid dropper format and is promoted as using advanced absorption technology.
The manufacturer makes a 99% absorption claim in some promotional materials.
However, we could not identify publicly available, independent pharmacokinetic research validating that percentage for the complete Yu Sleep formula.
Liquid delivery can offer convenience and easier administration, but it should not automatically be interpreted as proof of superior absorption or clinical effectiveness.
Yu Sleep Ingredients: What Does the Research Say?
According to the manufacturer’s published Supplement Facts information, one serving contains the following:
| Ingredient | Amount Per Serving |
|---|---|
| Vitamin B2 (Riboflavin-5-Phosphate) | 0.5 mg |
| Vitamin B6 (Pyridoxal-5-Phosphate) | 0.5 mg |
| Melatonin | 0.9 mg |
| Proprietary Blend | 637 mg |
The proprietary blend contains seven additional ingredients: red tart cherry concentrate, magnesium glycinate, apigenin, lemon balm extract, 5-HTP, L-theanine, and GABA.
A significant limitation: the individual quantities of these seven ingredients are not disclosed. Consequently, it is impossible to determine whether each one is present at amounts comparable to those investigated in clinical studies.
Melatonin — 0.9 mg
Melatonin is the ingredient with the most direct connection to the body’s circadian sleep-wake system.
A 2024 systematic review and dose-response meta-analysis of randomized trials found that melatonin supplementation could improve some sleep-related outcomes, with effects influenced by dose and administration timing.
However, evidence is less convincing for treating chronic insomnia in adults.
Yu Sleep’s 0.9 mg serving may be appealing to consumers interested in a comparatively low-dose product, but effectiveness will depend on individual circumstances.
Melatonin can also cause side effects, including daytime drowsiness, headaches, and dizziness.
Our assessment: a biologically relevant ingredient with human research supporting certain sleep-related uses, but not a guarantee of deeper or uninterrupted sleep.
Red Tart Cherry Concentrate
Tart cherries contain naturally occurring melatonin and polyphenols, including anthocyanins.
A 2025 systematic review examined seven intervention studies involving tart cherry consumption and sleep-related outcomes.
Some reported improvements in sleep duration, efficiency, or sleep onset, while others found less consistent results.
The researchers emphasized that the available studies differed substantially in their dosages, interventions, and participants.
Importantly, studies involving tart cherry juice or concentrate cannot establish that an undisclosed amount inside Yu Sleep will generate comparable results.
Our assessment: a potentially interesting botanical ingredient, supported by encouraging but limited and heterogeneous evidence.
L-Theanine
L-theanine is an amino acid naturally found in tea leaves.
It has been studied for its potential effects on relaxation, stress-related symptoms, and sleep quality.
A 2025 systematic review and meta-analysis involving 19 studies and 897 participants reported improvements in several subjective sleep measures, including perceived sleep quality and sleep onset latency.
Another review suggested that certain L-theanine doses may support healthy sleep in adults, although further high-quality research remains necessary.
The main limitation for Yu Sleep is the absence of a disclosed L-theanine dose.
Without knowing how much it contains, comparisons with published clinical trials remain speculative.
Our assessment: one of the more promising relaxation-focused components, but the unknown quantity limits conclusions about this specific product.
Magnesium Glycinate
Magnesium is an essential mineral involved in normal muscle function, nerve signaling, and numerous physiological processes.
Magnesium glycinate is a commonly used supplemental form.
A 2025 randomized controlled trial involving adults reporting poor sleep found a modest improvement in insomnia symptom scores after magnesium bisglycinate supplementation.
However, a broader systematic review published in 2026 concluded that evidence for magnesium as a routine insomnia treatment remains inconsistent and of generally low certainty.
The Yu Sleep label does not separately disclose the amount of elemental magnesium supplied by its proprietary blend.
Our assessment: an ingredient with a plausible physiological role and some supportive findings, but insufficient evidence to conclude that the quantity in Yu Sleep meaningfully improves sleep.
Lemon Balm Extract
Lemon balm (Melissa officinalis) has a long history of traditional use for relaxation and mild stress-related complaints.
Some small human studies have investigated its potential effects on mood, relaxation, and sleep-related symptoms.
However, differences between extracts, dosages, and study methods make it difficult to generalize the findings.
Yu Sleep does not disclose the specific amount or standardization of its lemon balm extract.
Our assessment: a reasonable botanical addition to a relaxation-oriented formula, although stronger product-specific evidence would be desirable.
Apigenin
Apigenin is a naturally occurring flavonoid found in various plants, including chamomile.
Laboratory and preclinical research has explored its interactions with biological pathways involved in nervous system activity.
However, direct human evidence supporting isolated apigenin as an effective sleep supplement is limited.
It would be premature to describe it as a clinically established treatment for insomnia or nighttime awakenings.
Our assessment: scientifically interesting, but clinical sleep benefits remain insufficiently established.
5-HTP
5-Hydroxytryptophan, commonly known as 5-HTP, is involved in serotonin synthesis.
It is often marketed for mood and sleep support, but research on its direct effects on sleep remains limited.
More importantly, 5-HTP creates potential medication-interaction concerns.
The Memorial Sloan Kettering Cancer Center warns against combining 5-HTP with antidepressants and other serotonin-affecting medications without medical supervision because of the risk of serotonin-related adverse effects, including serotonin syndrome.
Our assessment: an ingredient that deserves particular attention from consumers who take prescription medications. Its inclusion is not automatically an advantage for everyone.
GABA
Gamma-aminobutyric acid, or GABA, is a neurotransmitter involved in regulating nervous system activity.
Although GABA plays an important role within the brain, taking GABA orally is not equivalent to directly increasing its activity in the central nervous system.
Research examining oral GABA supplements for relaxation and sleep has produced limited and mixed findings.
Our assessment: biologically relevant, but its benefits as an orally consumed sleep ingredient remain uncertain.
Vitamins B2 and B6
Yu Sleep supplies 0.5 mg each of vitamin B2 and vitamin B6.
Both contribute to normal metabolic functions, and vitamin B6 participates in biochemical processes related to neurotransmitter synthesis.
However, normalizing a vitamin deficiency is different from demonstrating that additional supplementation improves sleep in otherwise adequately nourished adults.
These vitamins make the formula more nutritionally comprehensive, but they should not be viewed as proven sleep enhancers.
Label clarification: some Yu Sleep promotional descriptions mention vitamin B12, while the manufacturer’s published Supplement Facts panel identifies vitamins B2 and B6. Consumers should verify the actual bottle label before use.
Can Yu Sleep Really Increase Deep Sleep?
One of Yu Sleep’s most attractive marketing propositions involves improving deep, restorative sleep rather than simply helping someone become sleepy.
Deep sleep, also called slow-wave sleep or N3 sleep, plays an important role in normal physiological recovery and sleep regulation.
However, demonstrating an actual increase in deep sleep requires more than reporting that someone feels refreshed the next morning.
At the time of this review, we could not verify a published, independently conducted randomized clinical trial showing that the finished Yu Sleep formula increases polysomnography-measured deep sleep.
That distinction matters because an ingredient might improve perceived sleep quality without necessarily increasing the amount of time spent in the deepest sleep stage.
Tracking Sleep With Oura, WHOOP, and Garmin
The manufacturer suggests that consumers may be able to observe changes in their sleep through wearable devices such as Oura, WHOOP, and Garmin.
These devices can provide useful estimates of sleep duration, nighttime patterns, and sleep-stage distribution.
However, their results should be interpreted carefully.
A 2025 validation study comparing several commercial wearable devices with laboratory polysomnography found meaningful differences in sleep measurements and only fair-to-moderate overall agreement for sleep-stage classification.
Research on Oura and other wearables has also identified variability in the accuracy of estimated sleep stages.
This means that a higher deep-sleep score on a wearable does not, by itself, prove that Yu Sleep caused a physiological improvement.
For someone already using one of these devices, a more reasonable approach is to observe trends over multiple nights while also considering bedtime consistency, alcohol consumption, stress, exercise, caffeine, and other factors.
Our assessment: wearable tracking may provide helpful personal context, but it cannot substitute for controlled clinical evidence of Yu Sleep’s effectiveness.
Potential Yu Sleep Benefits: What Is Reasonable to Expect?
Based on its ingredients and intended use, Yu Sleep may appeal to adults seeking support in several areas.
A More Consistent Bedtime Routine
Taking a supplement at approximately the same time each evening may encourage a more structured nighttime routine.
That consistency can be valuable, especially when accompanied by regular sleep and wake times.
Support for Occasional Sleep-Onset Difficulties
Melatonin’s role in circadian timing makes the formula potentially relevant for some people who occasionally struggle to settle into their intended sleep schedule.
However, the response to melatonin varies, and the product is not an established treatment for chronic insomnia.
Relaxation Before Bed
The combination of L-theanine, lemon balm, and other calming ingredients may interest individuals who associate their sleep difficulties with difficulty unwinding.
Evidence for some of these ingredients is encouraging but does not prove that their combination delivers additional benefits.
Convenient Liquid Administration
The dropper format may be particularly practical for people who prefer liquid supplements over pills.
The manufacturer recommends taking the liquid shortly before bedtime, making it relatively easy to incorporate into an existing routine.
Morning Refreshment
Waking up feeling refreshed is an important goal for many consumers.
Nevertheless, there is not enough product-specific clinical evidence to guarantee improvements in morning energy, alertness, or cognitive performance.
Individual experiences can vary considerably.
How to Take Yu Sleep
According to the manufacturer, the recommended serving is:
- Serving size: 2 full droppers (approximately 2 mL).
- Timing: About 30 minutes before bedtime.
- Method: Place the liquid under the tongue, hold for approximately 30 seconds, and then swallow.
- Servings per bottle: Approximately 30.
- Bottle size: 60 mL (2 fl oz).
The manufacturer encourages consistent nightly use and suggests allowing at least 21 consecutive nights to assess the product.
However, this suggested evaluation period is a manufacturer’s recommendation, not a scientifically established requirement for the formula to become effective.
Consumers should follow the current product label and consult a healthcare professional before use if they take medication or have an underlying medical condition.
Because Yu Sleep contains melatonin and other potentially sedating ingredients, it should not be taken before driving or operating machinery.
Avoid combining it with alcohol or other sleep aids without appropriate medical guidance.
Yu Sleep Pricing and Packages
Yu Sleep is marketed through multi-bottle packages, with larger orders offering lower per-bottle pricing.
The following prices are based on the supplied sales offer as of November 2026.
| Package | Supply | Price Per Bottle | Total Price | US Shipping | Bonuses |
|---|---|---|---|---|---|
| 2 Bottles | 2 Months | $69 | $138 | $9.95 | None listed |
| 3 Bottles | 3 Months | $59 | $177 | Free | 3 Free Bonuses |
| 6 Bottles | 6 Months | $49 | $294 | Free | 3 Free Bonuses |
All prices are in US dollars. Applicable taxes and any additional charges should be confirmed at checkout.
2-Bottle Package — Smaller Initial Commitment
The two-month package costs $138 plus $9.95 in US shipping, bringing the listed total to $147.95 before any applicable taxes.
This option requires a smaller upfront commitment than the three- or six-bottle packages.
However, its effective per-bottle cost is higher.
3-Bottle Package — Balanced Purchase Option
The three-month package costs $177, equivalent to $59 per bottle.
It includes free US shipping and three advertised bonuses.
For someone already comfortable with the ingredients and purchase terms, it offers a middle ground between upfront expense and per-bottle savings.
6-Bottle Package — Best Value Per Bottle
The six-month package costs $294, equivalent to $49 per bottle.
It offers the lowest advertised unit price, free US shipping, and three free bonuses.
That makes it the best value per bottle, although it also requires the largest initial payment.
A lower unit price does not necessarily make it the best choice for a first-time buyer, particularly when the product’s individual effectiveness and tolerability are still unknown.
Are Yu Sleep’s Prices Competitive?
Yu Sleep is positioned as a premium multi-ingredient sleep supplement rather than an inexpensive standalone melatonin product.
Its price reflects the combined formula, liquid delivery format, and marketing position.
However, the undisclosed amounts in the proprietary blend make it difficult to evaluate the product’s actual ingredient value against supplements with fully disclosed dosages.
Consumers should consider this limitation before making a larger purchase.
Where to Buy Yu Sleep: View Yu Sleep Pricing and Availability on the Official Sales Page.
What Bonuses Come With Yu Sleep?
The advertised three- and six-bottle packages include three complimentary bonuses.
These are presented as additional resources accompanying qualifying purchases rather than extra bottles of the supplement.
Because the exact bonus descriptions and eligibility terms may change, buyers should confirm the current titles, formats, and delivery details on the checkout page.
Bonuses can add convenience or educational value, but the primary purchase decision should be based on the supplement itself.
Yu Sleep 60-Day Money-Back Guarantee
Yu Sleep is offered with a 60-day money-back guarantee.
According to the official refund policy, customers have 60 days from the purchase date to request a return if they are dissatisfied.
However, several important conditions apply.
How to Request a Refund
Customers must contact the seller’s support team and provide the information required by the refund policy, including their name, email address, ClickBank invoice information, and order number.
The policy also requires the return of the applicable product and submission of a shipment tracking number.
The date the return package is posted is used to determine whether the return falls within the stated period.
Refund Limitations
The policy explains that original shipping and handling charges are not refundable and that customers must pay return postage.
It also describes the guarantee as a one-time opportunity.
Once a customer has received a refund for Yu Sleep, subsequent purchases are not eligible for another refund under the same guarantee.
These conditions are important, particularly for customers purchasing larger bundles.
The manufacturer’s suggested 21-night usage period should not be confused with the separate 60-day return deadline.
Official Refund Policy: Read Yu Sleep’s Complete Money-Back Guarantee Terms.
Shipping and Order Considerations
The advertised packages offer the following US shipping arrangements:
- 2 bottles: $9.95 shipping.
- 3 bottles: Free US shipping.
- 6 bottles: Free US shipping.
Delivery availability and costs outside the United States should be verified directly at checkout.
The published offer does not establish that every international destination is eligible for delivery.
Buyers should also inspect the final checkout summary to confirm the total charge and whether the purchase is a one-time order or involves recurring billing.
We could not independently verify the complete billing terms of the supplied affiliate checkout during this review.
Yu Sleep Customer Reviews: What Are Buyers Saying?
The brand’s promotional materials and online storefront include testimonials from customers who report improvements in bedtime relaxation, fewer nighttime awakenings, and feeling more refreshed in the morning.
These experiences are consistent with the outcomes the manufacturer promotes.
However, testimonials displayed on a seller-controlled website are not equivalent to independently verified clinical evidence.
They may reflect the experiences of selected customers and do not establish how frequently similar outcomes occur among all purchasers.
Sleep quality is also influenced by factors such as stress, caffeine intake, alcohol consumption, health conditions, work schedules, and bedtime habits.
For these reasons, customer testimonials should be considered alongside ingredient research, product transparency, and the terms of purchase rather than treated as proof of effectiveness.
Your Shop Network has not independently conducted a hands-on trial of Yu Sleep or verified the experiences described in these testimonials.
Yu Sleep Pros and Cons
Pros
- Provides a comparatively low 0.9 mg dose of melatonin.
- Combines several ingredients associated with relaxation and sleep-related research.
- Convenient liquid format for people who dislike swallowing pills.
- Approximately 30 servings per 60 mL bottle.
- Multiple purchase options with lower unit prices for larger packages.
- Free US shipping on qualifying three- and six-bottle orders.
- Advertised 60-day money-back guarantee.
Cons
- Individual amounts of the seven proprietary-blend ingredients are not disclosed.
- No independently verified clinical trial of the finished formula was identified.
- Claims of 99% absorption and increased deep sleep require stronger product-specific substantiation.
- The formula includes 5-HTP, which may interact with serotonergic medications.
- Per-bottle pricing is relatively high compared with basic melatonin supplements.
- Refunds require following return procedures, and shipping-related expenses are excluded.
- The guarantee is limited to one refunded purchase.
- Larger packages require a substantial upfront payment.
Is Yu Sleep Safe? Potential Side Effects and Precautions
A supplement containing familiar nutrients and botanical ingredients is not necessarily suitable for everyone.
Yu Sleep contains melatonin and 5-HTP, alongside other compounds that may influence relaxation or alertness.
Potential concerns include drowsiness, headache, dizziness, gastrointestinal discomfort, and interactions with medications.
The inclusion of 5-HTP is particularly relevant for people taking antidepressants or other medications affecting serotonin.
Combining serotonergic compounds without appropriate medical supervision may increase the risk of serious adverse effects.
Individuals who are pregnant or breastfeeding, people with medical conditions, and those taking prescription medication should consult a qualified healthcare professional before using the product.
It is also important to remember that the safety of long-term melatonin supplementation remains less certain than its short-term use.
Yu Sleep should not be considered a replacement for medical evaluation of chronic insomnia, suspected sleep apnea, or other persistent sleep disorders.
For chronic insomnia, cognitive behavioral therapy for insomnia (CBT-I) remains an important evidence-based treatment approach recommended in clinical guidance.
Who Should Consider Yu Sleep?
Yu Sleep may be worth researching for adults who:
- Prefer liquid supplements instead of capsules.
- Are interested in a relatively low-dose melatonin formula.
- Occasionally find it difficult to unwind before bed.
- Want a multi-ingredient product rather than standalone melatonin.
- Understand that individual results are uncertain.
- Are comfortable with the disclosed ingredients, proprietary blend limitations, and purchase terms.
It may be a less suitable option for anyone seeking a fully transparent ingredient-by-ingredient dosage breakdown.
People who take antidepressants, have significant medication-interaction concerns, or experience persistent sleep disorders should seek professional advice before considering the formula.
Individuals primarily interested in melatonin may also prefer evaluating simpler, lower-cost options before committing to a premium combination supplement.
Yu Sleep Final Verdict: Is It Worth Buying?
Yu Sleep offers an interesting combination of low-dose melatonin, calming botanicals, amino acids, and magnesium glycinate in a convenient liquid format.
Its strongest features are the practical dropper delivery system, clearly disclosed melatonin amount, and the inclusion of ingredients that have attracted legitimate scientific interest in sleep and relaxation research.
L-theanine and tart cherry, for example, have been investigated in human studies, while magnesium and melatonin have received extensive research attention.
However, scientific research on isolated ingredients does not automatically demonstrate that Yu Sleep’s complete combination is effective.
The proprietary blend is another meaningful limitation. Without individual ingredient amounts, consumers cannot determine whether the formulation provides doses comparable to those used in successful studies.
The manufacturer’s claims regarding enhanced absorption, consistent deep-sleep improvements, and next-day refreshment should therefore be interpreted as promotional claims rather than established clinical outcomes.
The 60-day guarantee adds a degree of purchase reassurance, but its return-shipping costs, documentation requirements, and one-time limitation deserve attention.
Our verdict: Yu Sleep is a potentially appealing premium liquid supplement for adults interested in nighttime relaxation and low-dose melatonin. Its formula has plausible ingredients, but the evidence does not justify guaranteed claims of deeper sleep or superior absorption. Buyers should weigh the unknown proprietary-blend dosages, medication interactions, and package costs before deciding.
For someone seeking a convenient combination product and who has reviewed its safety considerations, Yu Sleep may be an option worth comparing with alternatives.
For someone prioritizing ingredient transparency, clinically established results, or the lowest possible cost, there may be more straightforward choices.
Check the Current Offer: Visit the Yu Sleep Sales Page.
Affiliate Disclosure: Your Shop Network may earn a commission from qualifying purchases made through links on this page. Our editorial assessment distinguishes manufacturer claims from independently available evidence.
Frequently Asked Questions About Yu Sleep
Yes. According to the published Supplement Facts panel, Yu Sleep contains 0.9 mg of melatonin per 2 mL serving.
A 60 mL bottle contains approximately 30 servings when used at the manufacturer’s recommended 2 mL serving size.
The manufacturer recommends approximately 30 minutes before bedtime, using two full droppers. Follow the instructions printed on the product label.
The manufacturer promotes improvements in deep and restorative sleep. However, we could not verify independent clinical trials demonstrating that the complete product increases polysomnography-measured deep sleep.
These devices can help monitor sleep-related trends. However, consumer sleep-stage estimates have accuracy limitations and cannot independently prove that a supplement caused an increase in deep sleep.
Yu Sleep is not marketed as a prescription sleeping pill, but that does not establish that it is free from all risks. Its safety depends on the ingredients, duration of use, individual circumstances, and possible medication interactions.
Yes. Magnesium glycinate is listed in the proprietary blend, although its individual amount is not disclosed.
Do not combine Yu Sleep with antidepressants or other serotonin-affecting medications without medical guidance. The formula contains 5-HTP, which may create important interaction risks.
The six-bottle package has the lowest advertised price per bottle at $49. The three-bottle package provides a smaller commitment at $59 per bottle, while the two-bottle package costs $69 per bottle plus shipping.
Yes. The official policy describes a 60-day money-back guarantee, subject to return procedures, nonrefundable shipping expenses, and a one-time guarantee restriction.
The advertised three- and six-bottle packages include free US shipping. The two-bottle package has a listed $9.95 US shipping charge.
No. Yu Sleep is marketed as a dietary supplement, not an approved treatment for insomnia or another sleep disorder. Persistent sleep difficulties warrant appropriate medical evaluation.
Sources & References
Official Product Sources
- Yu Sleep — Official Sales Page — Manufacturer’s sales offer and purchasing information.
- Yu Sleep — Official Refund Policy — Guarantee duration, return instructions, and refund restrictions.
- Yu Sleep — August 2026 Ingredient Disclosure — Manufacturer-issued information describing the 0.9 mg melatonin dose and proprietary blend.
Scientific & Independent References
- Optimizing the Time and Dose of Melatonin as a Sleep-Promoting Drug — Systematic Review and Meta-Analysis (2024) — Research on melatonin dosage, timing, and sleep-related outcomes.
- The Effects of L-Theanine Consumption on Sleep Outcomes — Systematic Review and Meta-Analysis (2025) — Human research investigating L-theanine and subjective sleep outcomes.
- The Effect of Tart Cherry on Sleep Quality and Sleep Disorders — Systematic Review (2025) — Assessment of tart cherry interventions and their potential effects on sleep.
- Magnesium Bisglycinate Supplementation in Healthy Adults Reporting Poor Sleep — Randomized Controlled Trial (2025) — Clinical investigation of magnesium bisglycinate supplementation.
- Magnesium Supplementation for Sleep in Adults — Systematic Review (2026) — Evaluation of clinical evidence and limitations of oral magnesium supplementation for sleep.
- 5-HTP — Memorial Sloan Kettering Cancer Center — Clinical safety information, interactions, and evidence limitations.
- A Performance Validation of Six Commercial Wrist-Worn Sleep-Tracking Devices (2025) — Comparison of consumer wearables, including WHOOP and Garmin, against polysomnography.
- Accuracy of Three Commercial Wearable Devices for Sleep Tracking in Healthy Adults (2024) — Research including Oura Ring sleep-stage estimates.
- Sleep Disorders and Complementary Health Approaches — NIH/NCCIH — Evidence and safety considerations for complementary sleep interventions.
- Combination Treatment for Chronic Insomnia Disorder in Adults — AASM Clinical Practice Guideline (2026) — Current clinical guidance concerning CBT-I and pharmacological treatment approaches.
Editorial note: Research on individual ingredients and consumer wearables is provided for scientific context. These studies should not be interpreted as clinical validation of Yu Sleep’s finished formula.
