Is Yu Sleep Legit? What We Could Verify About the Seller, the Claims and the 20 Studies

Whether Yu Sleep is “legit” depends on the question behind the word. Is the product sold by an identifiable company, and can you get your money back? Do its claims match the research it cites? What do buyers report? This guide takes each in turn, using the seller’s own pages, the 20 studies listed on its sales page, and one consumer complaint database. We read the seller’s pages on September 19, 2026. Pages change.

We cannot call a company a scam, and we cannot clear it. What we can do is show where each claim stands, and say what we could not verify.

The Short Answer

Yu Sleep is sold by a named company, with a published label and a published refund policy. It is sold through ClickBank, which the sales page calls its reseller.
The seller says it is Quantum Wealth LLC, registered in Ras Al Khaimah, United Arab Emirates, “for tax purposes,” with labs and a warehouse in the US. Its Terms page leaves the governing-law clause blank.
None of the 20 studies on the sales page tests Yu Sleep. Of the 17 indexed in PubMed, none mentions cortisol, apigenin, magnesium glycinate, immunity, adenosine or sleep architecture, which several of the page’s claims depend on.
Some claims have no source at all: “That’s a permanent fix!”, “you’ll STOP waking up at 3 AM” (credited to lemon balm), and “based on 36,498 + reviews!” (the reviews are not linked).
We found one consumer complaint on BBB Scam Tracker. It is unverified, and we did not search every complaint site.

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Who Sells Yu Sleep

The seller’s Contact page says: “Our website belongs to Quantum Wealth LLC.” Its About Us page adds: “Even though our labs and warehouse are in US, for tax purposes, our company is registered in FDBC3625 Compass Building, Al Shohada Road, AL Hamra Industrial Zone-FZ, Ras Al Khaimah, United Arab Emirates.” The sales page says ClickBank is the reseller, and it sends order questions to ClickBank and product questions to the seller’s contact page. The refund policy gives a return address in Aurora, Colorado.

Three details in the seller’s pages are worth knowing:

The Terms page has a governing-law clause with the jurisdiction missing. It reads: “These Terms shall be governed and construed in accordance with the laws of without regard to its conflict of law provisions.” The Terms page gives no company name and no street address.
Two links in the footer lead away from Yu Sleep’s site. “Anti Spam Policy” goes to tryglucocleansetea.com, and a second link inside “Legal & Testimonial Disclaimer” goes to getalldayslimmingtea.com. We did not open them and do not know why they are there.
The company registration is abroad by the seller’s own account. We could not check a registration record.

What that means for you is a question for a lawyer, and this is not legal advice. In practice, the routes the seller provides are the refund process below and ClickBank’s order support.

The Refund Terms

The sales page says: “Then it’s covered by our 60 days money back guarantee! You have 60 days to test Yu Sleep. Love it, or get every penny back. No questions asked.” The refund policy adds conditions:

You have 60 days from purchase.
To get a refund you must contact the seller’s support with your full name, email address, ClickBank email invoice and order number.
The policy tells you to send the package to the Aurora, Colorado address, and says the seller does not cover return shipping costs.
You must say exactly what you are returning. Its example is returning two unopened bottles from a three-month order.
The policy recommends taking Yu Sleep daily for at least 21 days.

Whether “every penny” includes the cost of sending the bottles back is a question these two pages leave open. Ask the seller before you rely on it.

What the Sales Page Claims, and What the Studies Contain

The page lists 20 “Scientific References” and does not say which sentence each one supports. We took the claims and checked whether any of the abstracts mention the thing the claim depends on. That check covers the 17 references indexed in PubMed. It reads abstracts only, and a full paper could contain more. The other three are covered in the next section.

What the sales page says	What the studies contain
Lemon balm “reduces cortisol” so “you’ll STOP waking up at 3 AM”	No abstract mentions cortisol. Lemon balm appears in one, as one ingredient of a different capsule in a 40-person study with no control group. None studies waking at 3 AM.
Apigenin is “nature’s gentle sedative”	No abstract mentions apigenin.
Magnesium glycinate “promotes restorative stages of sleep”	No abstract mentions glycinate. The one magnesium study is a laboratory study of a different compound, magnesium-L-theanine.
“Full Sleep System Reset in 3 to 6 Months” and “restores your body’s natural sleep architecture”	No abstract mentions sleep architecture, and none reports how adults sleep after they stop taking a supplement.
“That’s a permanent fix!”	No abstract reports how adults sleep after they stop taking a supplement. The only abstract that mentions a follow-up is an open trial of 5-HTP in 45 children with sleep terrors.
“Stronger immunity” and “weight normalizing”	No abstract mentions immunity. The only match for “weight” is a dose unit (mg per kg of body weight) in the L-theanine review.
The formula “resets your sleep pressure system” by supporting adenosine	No abstract mentions adenosine. Our sleep pressure guide covers what the research says.
“Nano-enhanced”	No abstract mentions nanoformulations.
Melatonin: “Only 0.9mg per serving … supports longer, deep and higher-quality sleep”	Two references are relevant, a meta-analysis of 23 trials and a meta-analysis of 19 trials. The second found small effects: about 7 minutes faster to fall asleep and about 8 minutes more sleep, with larger effects at higher doses and in longer trials. Neither identifies 0.9 mg as a better dose.
L-theanine works “while reducing anxiety and racing thoughts”	The L-theanine review says L-theanine has anxiolytic effects, and its authors work for a company that makes L-theanine. No abstract mentions racing thoughts.
Ingredients “backed by cutting-edge neuroscience and decades of clinical research”	The 17 indexed studies span 2002 to 2024. Five are randomized human trials of a single ingredient. None tests Yu Sleep.

Some claims come with no reference at all. The page says “based on 36,498 + reviews!” and does not link the reviews. It says “We’re constantly selling out and we have limited inventory,” which we cannot check. Its prices show “$99” crossed out next to “30% OFF” and “50% OFF,” and we could not verify that $99 was ever charged. It credits bonuses to “Dr. Collins,” with no first name, credentials or link. A web search for his name with “Yu Sleep” returned only sales pages, affiliate sites and reviews of the product, and we found no independent record of him.

The page’s testimonials include claims of weight loss, of heart rate variability doubling, and of a doctor being surprised by blood work. None of the 20 references supports weight or heart rate variability claims, and we cannot verify the testimonials. The seller’s own disclaimer says testimonials “may not reflect the typical purchaser’s experience.”

The 20 References, One by One

Numbers follow the order on the sales page. The page links each one; we opened every link.

Reviews and meta-analyses of trials (3)

#1, Gholami et al., 2022. A meta-analysis of 23 randomized trials, from 2,642 papers, in adults with various diseases. Melatonin improved sleep quality on the Pittsburgh Sleep Quality Index in adults with respiratory diseases, metabolic disorders and primary sleep disorders, and not in those with mental disorders or neurodegenerative diseases. It is the strongest reference on the page, and it is about one of the ten ingredients.
#10, Hepsomali et al., 2020. A systematic review of 14 placebo-controlled human trials of oral GABA. Its conclusion is “limited evidence for stress and very limited evidence for sleep benefits.” The sales page lists it as “Oral GABA and Sleep Benefits.”
#15, Ferracioli-Oda et al., 2013. A meta-analysis of 19 studies with 1,683 people who have primary sleep disorders. Melatonin shortened the time to fall asleep by about 7 minutes and lengthened total sleep time by about 8 minutes. The authors call the effects modest. Longer trials and higher doses showed larger effects on those two measures.

Randomized human trials of one ingredient (5)

#2, Sutanto et al., 2024. Thirty adults aged about 66 in Singapore took 100 mg of 5-HTP a day or nothing for 12 weeks, single-blinded and without a placebo. The abstract reports a favorable effect on some sleep-quality components and a significant improvement in a subjective sleep score among poor sleepers.
#7, Howatson et al., 2012. Twenty healthy adults took tart cherry juice concentrate or a placebo for 7 days, double-blind and crossover. Urinary melatonin, time in bed, total sleep time and sleep efficiency rose with the juice. It was a juice concentrate, and the abstract does not give the amount.
#9, Meloni et al., 2022. Eighteen people with Parkinson’s disease and REM sleep behavior disorder took 50 mg of 5-HTP or a placebo for 4 weeks, in a crossover design. REM sleep rose, and the drop in arousals and time awake after sleep onset was marginal and not significant. It concerns a movement-disorder population, not people with ordinary insomnia.
#12, Adventure-Heart et al., 2018. One hundred adults, double-blind, took 240 mg of vitamin B6, a B-complex, or a placebo. B6 increased how much of their dreams people recalled and did not significantly change other sleep measures. The B-complex group rated their sleep quality lower and felt more tired on waking. Yu Sleep contains 0.5 mg of B6, about a 480th of that dose.
#14, Losso et al., 2018. Eleven adults over 50 with insomnia were randomized in a crossover trial, and 8 finished. After 2 weeks of 240 mL of tart cherry juice twice a day, they slept 84 minutes longer on polysomnography (P = 0.0182), and one questionnaire showed better sleep efficiency. The other questionnaires showed no significant difference. That is about 480 mL of juice a day. A serving of Yu Sleep holds at most 637 mg of blend, shared by seven ingredients. The trial was funded by NIH institutes.

Open trials without a control group (2)

#5, Lemoine et al., 2019. Forty adults in Poland with mild-to-moderate insomnia took a capsule of melatonin, vitamin B6 and extracts of California poppy, passionflower and lemon balm for two weeks. Sleep-quality scores rose from 5.4 to 7.3 out of 10. There was no control group, and it is a different product from Yu Sleep. The last author works in the medical department of Sanofi Consumer Health Care.
#16, Bruni et al., 2004. An open trial in 45 children aged 3 to 10 with sleep terrors, comparing children given 5-HTP with children not given it. At the 6-month follow-up, 5 of the children given 5-HTP (16.1%) still had episodes, against 10 of the comparison children (71.4%). It concerns children with a specific sleep disorder, not adults with insomnia.

Narrative reviews (4)

#3, Gottesmann, 2002. A review of GABA in the brain, centered on GABA-A receptors and prescription hypnotics. Its abstract does not mention GABA taken by mouth as a supplement.
#4, Rao, Ozeki and Juneja, 2015. A review of L-theanine. All three authors are listed as working for Taiyo Kagaku Co. Ltd., a company that makes L-theanine.
#8, Poza et al., 2022. A review from the Spanish Sleep Society’s insomnia study group. Its abstract says little scientific evidence supports any benefit from replacing the melatonin that declines with age, and that the most suitable doses and preparations are still to be clearly defined.
#18, Esquivel and Ghosn, 2024. A review of common sleep supplements. It says melatonin and magnesium are widely researched “with conflicting results,” and that evidence for the efficacy of many sleep supplements is limited.

Laboratory and animal studies (3)

#11, Dasdelen et al., 2022. Tests two new magnesium-L-theanine compounds in laboratory models of brain electrical activity and sleep. The abstract reports no human participants. Yu Sleep lists magnesium glycinate and L-theanine, not this compound. Three authors were employed by Nutrition21, LLC.
#17, Kim et al., 2019. A mixture of GABA and L-theanine, tested in mice.
#19, Yuan et al., 2024. Mice and a mouse cell line, on how vitamin B6 affects a brain-cell process called ferroptosis after chronic sleep deprivation.

Not studies of supplements and sleep (3)

#6, StatPearls, “Riboflavin Deficiency”. The sales page labels this link “Vitamin B2 (Riboflavin) for better sleep.” We searched the chapter’s text and found no mention of sleep.
#13, a 2018 conference abstract from Utrecht University, on dietary vitamin B2 intake, sleep quality and daytime alertness. The full text is behind a paywall, so we did not read the results. It concerns food intake, not a supplement.
#20, a blog post on healgrp.org titled “Riboflavin Rhythms: Essential Vitamin B2 Tips for Optimal Senior Sleep.” It is a web article with a reference list, not a study.

In short, the list has 3 reviews and meta-analyses, 5 randomized human trials of a single ingredient, 2 open trials, 4 narrative reviews, 3 laboratory or animal studies and 3 items that are not studies of supplements and sleep. The references that carry weight are the melatonin meta-analyses (#1 and #15) and the small tart cherry trials (#7 and #14). The list does not support the page’s claims about cortisol, permanence, immunity or weight. Our Yu Sleep review goes through the evidence ingredient by ingredient.

What Buyers Report

We found one report on BBB Scam Tracker, dated May 18, 2026, listing “Yu Sleep / Quantum Wealth LLC.” The person who filed it describes ordering three bottles at a discount, then getting an alert from their credit card company that another order from Yu Sleep for $97 had been declined. They report not receiving their order and phone support that could not find it. They list $190 lost. The BBB states that this content is “based on victim and potential victim accounts.” We cannot verify the report.

One report does not show a pattern, and we did not search every complaint site. Our what real users report guide goes further, including review sites and what search results for Yu Sleep reviews actually contain.

Is Yu Sleep a Scam?

We cannot call it that, and we cannot clear it. Here is the line we draw.

What we verified: a named seller, a published refund policy with conditions, a label that discloses three of its ten amounts, and a sales page that sends buyers to ClickBank for order support.

What we could not verify: a company registration record, where the product is made, the review count, the testimonials, the $99 price behind the discounts, the “constantly selling out” claim, and who “Dr. Collins” is.

Where the sales page goes beyond the studies it lists: the claims in the table above. Whether that amounts to deception is a legal judgment we are not in a position to make. What we can say is that the page states more than the 20 studies can support.

Before you buy:

Confirm you are on the seller’s own pages. The refund policy we read is on getyusleep.com.
Keep the ClickBank email invoice and order number. The refund policy requires them.
Check the cart for add-ons. One complaint mentions an extra charge attempt.
Ask about return shipping before you rely on “every penny back.”

Questions

Is Yu Sleep legit?

It is a product sold by a named company with a published label and refund policy. Whether its claims are supported is a separate question, and on the evidence in its own reference list, several are not.

Who owns Yu Sleep?

Its Contact page says the website belongs to Quantum Wealth LLC. Its About Us page says the company is registered in Ras Al Khaimah, United Arab Emirates, and that its labs and warehouse are in the US.

Can I get a refund?

The seller offers a 60-day refund. You contact support with your name, email, ClickBank invoice and order number, and the policy says you send the package back and pay the return shipping.

Does Yu Sleep work?

Our Yu Sleep review goes through what the research says, ingredient by ingredient, and what the label does not disclose.

Is Yu Sleep made in the USA?

The About Us page says its labs and warehouse are in the US. We could not verify where it is made.

Bottom Line

The product has a seller, a label and a refund policy. The claims on its sales page go well beyond the 20 studies it cites, and none of those studies tests Yu Sleep. If you decide to buy, read the refund terms first and keep your records. Nothing here is medical advice.

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Sources Cited in This Guide

Seller pages, all read September 19, 2026:

Yu Sleep sales page. getyusleep.com
About Us. getyusleep.com/about-us/
Contact. getyusleep.com/contact/
Refund Policy. getyusleep.com/refund-policy/
Terms and Conditions. getyusleep.com/wpautoterms/terms-and-conditions/
Legal & Testimonial Disclaimer. getyusleep.com/legal-testimonial-disclaimer/

The 20 references on the sales page, in its order, are linked in the section above. PubMed identifiers: 33417003, 38309227, 11983310, 25759004, 31331545, 22038497, 36064286, 34403081, 33041752, 35449538, 29665762, 28901958, 23691095, 15146330, 30707852, 38737872, 38599059. The other three are NCBI Bookshelf NBK470460, the Sleep 2018 meeting abstract A162 and the healgrp.org post.

Better Business Bureau. BBB Scam Tracker report 1294859, “Yu Sleep / Quantum Wealth LLC,” May 18, 2026. Read September 19, 2026. BBB Scam Tracker

If you are the seller and something here is wrong, write to editors@sleepanchors.com and we will check it and correct it. This guide is for information and is not medical or legal advice.