Yu Sleep Reviews (2026): Does This Sleep Supplement Actually Work?

Yu Sleep is a liquid sleep supplement sold through a direct-response funnel, and its sales page lists ten ingredients. It publishes the dose of exactly one of them.

That one dose happens to be the right one, which makes this a more interesting product than the format suggests. It is everything after that first number where the problems start.

How this review was done

I have not taken this product. There is no test panel, no trial and no “our testers”, because there were none. Everything below comes from Yu Sleep’s own sales pages, read in full, plus its Amazon listing and the 94 customer ratings on it, plus the published evidence on the ingredients it names.

I should say plainly what I could not do. I could not find a Supplement Facts panel. The product is sold across three mirror domains — getyusleep.com, yusleeplabs.com and startyusleep.com — which serve an identical page, and none of them carries a label image or an ingredient table. I checked all thirty-seven images on the page. The Amazon listing does not publish one either: it names five ingredients in its description and gives a quantity for exactly one of them. So where a dose is missing below, it is missing because the company does not publish it, not because I did not look.

The funnel pricing was checked in September 2026. The Amazon listing, its price, its rating and the customer reviews quoted here were pulled on 18 September 2026. This is general information, not medical advice, and the safety section below matters more than usual.

What Yu Sleep actually is

A flavoured liquid taken as two droppers about thirty minutes before bed, described on the page as an “all-natural nano-enhanced sleep formula”. The ten ingredients it names, with the function the company assigns to each:

• Melatonin — 0.9 mg per serving, to signal bedtime and shorten time to fall asleep.
• Red tart cherry extract — sleep-wake regulation, fewer awakenings, longer total sleep.
• Magnesium glycinate — restorative sleep stages.
• 5-HTP — serotonin production, mood and relaxation.
• GABA — quietening overactive brain activity.
• L-theanine — alpha brain waves, reduced racing thoughts. What the trials show: L-theanine for anxiety.
• Apigenin — described as “nature’s gentle sedative”.
• Lemon balm extract — cortisol reduction.
• Vitamin B6 and Vitamin B2 — circadian rhythm and natural melatonin production.

Taken as a list, this is not a silly formula. Tart cherry, magnesium, L-theanine, GABA and melatonin all appear in the published literature on sleep, and I have written about most of them in my guide to what the evidence actually supports. Apigenin is the active compound in chamomile. Lemon balm has a long traditional use. Somebody with a working knowledge of the field chose these.

The page also lists eighteen scientific references, which is more than most products in this category bother with, and they are real papers rather than invented ones. One of them — a trial showing that a GABA and L-theanine mixture decreases sleep latency — is directly relevant, because Yu Sleep contains both. That is a fair citation.

Where it sells, and what buyers there actually say

This is the section I could not write when I first published this review, and it changes the picture more than anything else here.

Yu Sleep does not only sell through its own funnel. It sells on Amazon, under ASIN B0FV34B71M, at $49 for the 2 oz / 60 ml bottle, and has done since 7 October 2025. Any review telling you the product is available “exclusively” through one official page is wrong, and that framing usually travels with an affiliate link.

Two things follow from that listing, and they point in opposite directions.

The good news: you can buy one bottle at the six-bottle price

The funnel’s cheapest per-bottle rate is $49, and it only reaches that if you buy six bottles at once for $294. Amazon sells a single bottle for the same $49. If you want to try this product, that is a materially better deal than the funnel offers: the same unit price without committing $294 up front, and Amazon’s own returns process rather than a guarantee you have to claim from the seller.

One caveat before you treat that as a recommendation. The Amazon listing names five of the ten ingredients in its description — tart cherry, GABA, 5-HTP, magnesium glycinate and the 0.9 mg of melatonin — and everything it does name matches the funnel page. The two official channels agree with each other. But the listing displays the brand as ALL SLIMMING HERBS while giving the manufacturer as Yu Sleep, which is the ordinary shape of a white-label supplement trading under a parent seller account, not a red flag on its own. Check the seller before you order.

The bad news: the rating

2.9 out of 5, from 94 ratings. That is the largest genuine sample of customer feedback that exists for this product anywhere, and it is the single most useful number on this page.

Set it against what the category usually claims. The funnel advertises itself on “36,498+ reviews”. The product ranks #567 in Herbal & Nutritional Sleep Supplements and #53,496 in Health & Household — respectable, unremarkable, and nowhere near the profile a figure like 36,498 implies. And a great many third-party Yu Sleep reviews report a rating of 4.9 out of 5 without naming a platform, a sample size or a date. A rating without those three things is a marketing figure, not evidence.

The reviews themselves are worth reading, because several of them test claims I could only assess from documents. All of the following are verified purchases:

• David H. F. — 4 stars, 8 August 2026. Reports that the product did help him fall and stay asleep, then explains that it made his sleep apnoea worse, and adds: “I read that the 5-HTP ingredient has interaction with serotonergic antidepressant medications, such as SSRI, SNRI, etc., so NOT RECOMMENDED for people taking these antidepressant medications.” A customer arrived independently at the same two safety conclusions I reached from the label. That is the most useful review on the listing.
• Steven A. V. — 1 star, 10 September 2026. Seven nights, no effect, headaches, and: “I am disappointed I could not get a refund.” I credited the 60-day guarantee below, and I still do — but at least one buyer says he did not get one. Read the refund terms before you pay, not after.
• Carole K. — 1 star, 4 September 2026. “the dropper does not fill it up.” A dosing-consistency complaint about a product whose doses are already unpublished.
• Stefanie B. — 5 stars, 11 February 2026. A satisfied buyer who says it works, and who still volunteers that “the price point is also rather high”. When your happy customers raise the price unprompted, the price is a problem.

Ninety-four ratings averaging 2.9 means a substantial share of buyers were dissatisfied. Before ordering, read the one- and two-star reviews specifically. That is where the refund difficulties, the taste objections and the “did nothing for me” reports live, and none of them appear in the testimonials on the sales page.

The one dose they publish, and why it is the right one

This is the part of the product I genuinely rate, and it deserves saying before the criticism.

Melatonin: 0.9 mg per serving. The page even frames it as a selling point — “only 0.9 mg” — and explicitly positions the product against “high-dose melatonin or synthetic supplements that can leave you groggy the next morning”.

They are right, and most of the market is wrong. Melatonin is a timing signal, not a sedative, and the amount needed to shift a body clock is small. The 5 mg and 10 mg gummies that dominate shelves are far above what the timing effect requires, and the morning grogginess people complain about is a dose problem. I set out the trial data and the sensible doses in my review of the melatonin evidence.

A sub-milligram dose is the informed choice. Whoever formulated this read the literature.

It is worth being straight about what that dose will and will not do, though, because the clinical guidance is blunter than the marketing. The American Academy of Sleep Medicine’s clinical practice guideline for chronic insomnia states: “We suggest that clinicians not use melatonin as a treatment for sleep onset or sleep maintenance insomnia (versus no treatment) in adults.” That recommendation is graded weak, so clinicians may reasonably choose otherwise, but it is a recommendation against rather than for. Where melatonin does have support is narrower: the US National Center for Complementary and Integrative Health notes that it “may help with certain conditions, such as jet lag, delayed sleep-wake phase disorder, some sleep disorders in children, and anxiety before and after surgery.”

So the honest framing is this. If your problem is a body clock in the wrong place — jet lag, shift work, a schedule that has drifted late — a low melatonin dose is a rational tool and this product picked the right one. If you lie awake at two in the morning with a racing mind after an ordinary day, melatonin is not the mechanism your problem calls for.

The nine doses they do not publish

Which makes the rest of the label harder to excuse.

For the other nine ingredients, the sales page gives no amounts at all. Not for the magnesium, not for the L-theanine, not for the GABA, not for the 5-HTP. There is no Supplement Facts panel on any of the three domains, and none on the Amazon listing either.

This matters more than it might sound, and here is exactly why. The page cites a trial on a GABA and L-theanine mixture. That trial used specific quantities. Without Yu Sleep’s quantities, the citation cannot be checked against the product. It tells you that the ingredients have been studied somewhere, at some dose, by somebody. It tells you nothing about what is in the bottle.

The tart cherry is the sharpest illustration, because it is the most interesting ingredient in the formula. A 2010 pilot study in the Journal of Medicinal Food concluded that a tart cherry juice blend “has modest beneficial effects on sleep in older adults with insomnia with effect sizes equal to or exceeding those observed in studies of valerian”. That is a real finding, in fifteen participants, and a later placebo-controlled crossover study found benefits too. Here is what no promotional review mentions: those trials used 240 ml of tart cherry juice twice a day. Roughly half a litre daily. Two droppers cannot deliver a comparable quantity of the active compounds unless the extract is concentrated to a degree the label does not quantify — and it does not quantify it.

I have run into the same structure repeatedly. In magnesium, the dose used in the trial that everyone cites is 250 mg of elemental magnesium, and a great many products deliver a third of that while citing the same research. A formula can name ten well-studied ingredients and deliver a meaningful amount of none of them, and a liquid dropper makes this even harder to reason about than a capsule.

I am not asserting that Yu Sleep is underdosed. I am saying that neither I nor you can tell, and that on a product costing several hundred dollars a year, being unable to tell is the finding.

One further caution applies to this whole category rather than to this product specifically. NCCIH reports that in one analysis of melatonin supplements, “the melatonin levels ranged from 74 to 347 percent of the labeled quantity”. Third-party batch testing matters more here than almost anywhere else in supplements. Yu Sleep claims GMP manufacturing in an FDA-registered facility; it does not publish batch certificates of analysis, and I could not find any in a certifier’s register.

The 5-HTP problem

One of those undisclosed ingredients needs separating from the rest.

5-HTP is a direct precursor to serotonin. That is the whole basis of the claim made for it here. It also means it carries real interaction risk with anything else that raises serotonin — SSRIs and SNRIs, the most widely prescribed antidepressants, along with MAOIs, triptans taken for migraine, and tramadol. The concern is serotonin syndrome, which is uncommon but genuinely serious.

Now combine that with the previous section. A consumer taking an SSRI cannot read this page and find out how much 5-HTP they would be taking, because the number is not there.

Poor sleep and depression overlap heavily. A meaningful share of the people this product is advertised to will be on an SSRI. That is the single strongest reason I will not recommend Yu Sleep to a general audience, and it would remain true even if everything else about the product were excellent.

I am not the only one to reach that conclusion. The most detailed review on the Amazon listing — four stars, from someone who says the product genuinely helped him sleep — ends by warning other buyers off it for exactly this reason, and for a second one: he concluded it was worsening his sleep apnoea, because a product that relaxes you relaxes the airway too. Both warnings are sound. Neither appears anywhere on the sales page.

If you take any antidepressant, any migraine triptan, or tramadol, do not take this without asking your prescriber first.

Why so many Yu Sleep reviews describe a different product

If you have been researching this supplement, you have probably read a review that does not match anything above. It is worth explaining why, because it is the most common way buyers in this category get misled.

Several widely circulated Yu Sleep reviews — including some that rank well — state that the formula contains melatonin 3 mg, L-theanine 200 mg, valerian root 300 mg, chamomile 150 mg and GABA 100 mg. They then explain at length how valerian enhances GABA activity and how chamomile’s apigenin binds benzodiazepine receptors. Some of them instruct readers to take “two capsules” before bed.

None of that survives contact with the product.

• Valerian and chamomile are not in it. Neither the funnel page nor the Amazon listing names either one. Apigenin is present, and apigenin is the active compound in chamomile — but naming the isolated compound is not the same as naming the herb, and the milligram figures attached to it are invented.
• The melatonin figure is wrong by more than threefold. The product contains 0.9 mg, not 3 mg. That inversion matters more than a rounding error, because the low dose is the entire design rationale of the product. A review reporting 3 mg has misunderstood what it is looking at.
• There are no capsules. Yu Sleep is a liquid taken by dropper. A review instructing you to swallow two capsules has not seen the product.
• The milligram quantities cannot be traced to anything. No public source carries them, because the company does not publish them.

Note what this is not. It is not a case of the brand saying different things in different places: the funnel page and the Amazon listing agree with each other on every ingredient they both mention. The invented formula comes from the review ecosystem, not from the seller. Generic supplement-review templates get filled in with a plausible-looking “sleep stack” rather than with an actual Supplement Facts panel, one site publishes it, and the rest copy it. The specific dosages look authoritative precisely because they are specific, which is what makes them persuasive and exactly why you should distrust any figure that cannot be traced to a label.

The practical version: photograph the Supplement Facts panel when your bottle arrives, and compare it against whatever review persuaded you. If they disagree, trust the bottle.

What a year of Yu Sleep costs

The funnel pricing is a tiered multi-bottle offer, and one bottle covers thirty nights. There is no single-bottle option on the funnel: the smallest purchase is two.

• 2 bottles — $138 plus shipping, from a stated $198. That is $2.30 a night.
• 3 bottles — $177, from $297. $1.97 a night.
• 6 bottles — $294, from $594. $1.63 a night, which is the figure the page advertises.
• Amazon, 1 bottle — $49. Also $1.63 a night, with no bundle required.

All funnel tiers carry a 60-day money-back guarantee, which is a real consumer protection and I will credit it — with the caveat from the Amazon reviews above that at least one buyer reports being unable to obtain a refund. Note the date your parcel arrives and diarise the deadline.

Now the comparison that puts it in context. Taken nightly at its cheapest rate, Yu Sleep costs about $595 a year.

Against the six magnesium brands I have priced in full, at the dose that was actually tested in a randomised trial:

• Doctor’s Best — about $91 a year
• NOW Foods — about $130 a year
• Solaray — about $139 a year
• Pure Encapsulations — about $184 a year
• Thorne — about $395 a year
• Yu Sleep — about $595 a year

Yu Sleep at its best price costs 50% more than the most expensive standalone magnesium I have ever priced — a product that carries batch-level NSF certification and publishes its full panel. And Yu Sleep contains magnesium, in an amount nobody outside the company knows.

You may be paying for nine additional ingredients. You may be paying for nine additional pinches. The price does not tell you which, and neither does the label.

One pattern to be wary of, whichever channel you use. Multi-bottle offers combined with countdown timers and “limited stock” warnings exist to move you past exactly the verification described in this review. A product that works at one bottle will still work at six a month later — and if you want to test it, the single Amazon bottle at the same unit price is the cheaper way to find out.

The claims that go too far

Several statements overreach, and they are worth naming because they are the ones most likely to persuade someone.

• “Yu Sleep Helps Reduce, Even STOP Those Brutal 3 AM Wake-Ups!” No supplement can support an absolute like stop. Night waking has many causes — alcohol, sleep apnoea, anxiety, pain, an overheated room — and none of them is addressed by a dropper.
• Magnesium glycinate described as promoting sleep stages “responsible for healing, fat-burning, and memory consolidation”. Memory consolidation during sleep is well established. Framing a sleep supplement around fat-burning is a weight-loss claim wearing a sleep costume, and the evidence does not support it.
• “Nano-enhanced”, and “up to 99% absorption” on the Amazon listing. The underlying science is real — emulsifying compounds into very small droplets genuinely can improve bioavailability. But “up to 99%” names no compound, no comparator, no study and no measurement method, and absorption differs for melatonin, GABA and polyphenols. A single blanket percentage cannot describe all of them. The liquid format is a fair reason to prefer this over a tablet; the percentage should carry no weight in your decision.
• A 5-HTP citation drawn from a trial in Parkinson’s disease. A neurological-disease population is not a general adult with poor sleep, and results do not transfer between them.
• “Based on 36,498+ reviews”. I could not locate an independent source for that figure. The product holds 94 ratings on Amazon and ranks #567 in its own sleep-supplement subcategory. The testimonials on the sales page are first-name-and-city, which cannot be verified.

What Yu Sleep gets right

I do not want the criticism to bury the fair points, because there are more than I expected.

• The melatonin dose is genuinely well judged, and the company explains why rather than hiding it.
• The ingredient selection is coherent. These are not filler botanicals; most appear in the sleep literature.
• It cites eighteen real papers. Most direct-response supplements cite none.
• A 60-day money-back guarantee, stated plainly.
• The two official channels agree with each other. Everything the Amazon listing names matches the sales page. That is a lower bar than it should be, but plenty of products in this category fail it.
• A liquid works for people who cannot swallow capsules, which is a real accessibility advantage and one reason someone might choose it over the alternatives.

A version of this product that published its full panel would score considerably higher. The formula is not the problem. The disclosure is.

Interactions worth checking before you order

Most people will tolerate a product this low in melatonin. The realistic risks here come from interactions rather than from the ingredients themselves, and because the doses are unpublished you cannot size any of them yourself.

On long-term use, NCCIH is candid: “Short-term use of melatonin supplements appears to be safe for most people, but information on the long-term safety of supplementing with melatonin is lacking.” Any claim that a melatonin product is proven safe for indefinite use runs ahead of the evidence.

Who should consider it, and who should not

Do not take it if you take an SSRI, SNRI, MAOI, a triptan or tramadol, unless your prescriber clears it. That is the 5-HTP, and it is not negotiable.

Do not buy it expecting the 3 am wake-ups to stop. If you wake reliably in the small hours, the more useful questions are about alcohol, room temperature, and whether you should be screened for sleep apnoea.

Do not buy it as a cheaper route to magnesium. It is the most expensive way to take magnesium I have found, and you cannot tell how much you are getting. The six brands I have compared all publish their panels and all cost less.

You might reasonably consider it if you cannot take capsules, you want a low-dose melatonin product rather than a 10 mg gummy, your sleep problem is one of timing rather than chronic insomnia, you take no serotonergic medication, and the cost is genuinely immaterial to you. If that is you, buy the single $49 bottle on Amazon rather than a six-bottle bundle, and run the protocol below before you reorder.

And if you have been sleeping badly for more than three months, none of this is the answer. CBT-I is, and every clinical guideline says so.

How to test a sleep supplement properly

Most people evaluate supplements badly. They try one for three nights, sleep poorly on the second, and conclude nothing. If you are going to spend $49 finding out, spend it well.

1. Establish a baseline first. For seven nights before you start, record bedtime, estimated time to fall asleep, number of awakenings, wake time and a 1–10 morning freshness score. Change nothing else.
2. Change one variable. Start the supplement and keep everything else fixed — same bedtime, same caffeine cut-off, same room.
3. Run it for fourteen nights minimum. Sleep varies enormously night to night. Fewer than two weeks and you are measuring noise.
4. Take it at the right time. Roughly thirty to sixty minutes before your target bedtime, in dim light. Bright screens after dosing work directly against the mechanism.
5. Compare averages, not your best night. Your fourteen-night mean against your seven-night baseline mean. A meaningful result looks like fifteen minutes faster to sleep, or one fewer awakening. Not a transformation.
6. Decide on the data. If the averages are unchanged, stop and claim the refund — and start that process well inside the window rather than on its last day.

This costs nothing and protects you from both the placebo effect and premature dismissal.

The verdict

Score: 5.5 out of 10.

I expected to dislike this more than I do. The formulation shows someone who read the research — the sub-milligram melatonin in particular is a choice most of the industry gets wrong, and getting it right cost them the “high potency” marketing angle.

What sinks it is that the same company will not tell you how much of anything else you are buying. Nine undisclosed doses, one of which interacts with the most commonly prescribed class of antidepressants, on a product that costs around $595 a year and is sold two bottles at a time on its own funnel. Every element of that is a choice, and every one of them favours the seller over the buyer.

The Amazon listing has since given us the one thing the funnel never would: a real, unmanaged sample of what buyers think. 2.9 out of 5 from 94 people is not a catastrophe, and it is not a scam signal — a real product ships, from a real listing, with a real returns process. But it is a long way from the 4.9 that circulates in the review ecosystem, and it does not move the score upward. The formula is not the problem. The disclosure is, and now the reception is too.

A note on how this site works. This review carries affiliate links, and they are marked wherever they appear. They were added after the score was set, and adding them changed nothing above: the 5.5 stands, the nine undisclosed doses stand, and the 5-HTP warning stands. The rule published on my affiliate disclosure page is that the verdict is written first and the link question comes afterwards. Where those links send you reflects that: they point to the single $49 bottle on Amazon, which is the cheaper and lower-risk way to try this product, rather than to the $294 six-bottle bundle the funnel pushes. Buy neither and the verdict above is unchanged.

Common questions

Does Yu Sleep actually work?

Nobody outside the company can answer that from the published information, which is the core problem with it. The ingredients it names are plausible and several have supporting evidence, but only the melatonin dose is disclosed, so you cannot compare the rest with the research the page cites. The melatonin alone, at 0.9 mg, would be expected to help modestly with falling asleep if your problem is one of timing. The 94 buyers who have rated it on Amazon average it at 2.9 out of 5.

What is in Yu Sleep?

Ten named ingredients: melatonin at 0.9 mg, red tart cherry extract, magnesium glycinate, 5-HTP, GABA, L-theanine, apigenin, lemon balm extract, vitamin B6 and vitamin B2. Only the melatonin has a published amount. I could find no Supplement Facts panel on any of the three funnel domains or on the Amazon listing. Reviews listing valerian root and chamomile at specific milligram doses are describing a formula that does not exist.

Is Yu Sleep available on Amazon?

Yes, under ASIN B0FV34B71M, at $49 for a single 60 ml bottle, listed since October 2025. Any review saying it is sold “exclusively” through one official page is wrong. The single Amazon bottle costs the same per bottle as the funnel’s six-bottle bundle, which makes it the cheaper way to try the product.

What is Yu Sleep’s real customer rating?

2.9 out of 5 from 94 Amazon ratings, checked on 18 September 2026. That is the largest verifiable sample anywhere. The 4.9 figure quoted across many review sites is not traceable to any platform, sample size or date, and should be treated as marketing copy.

Has Consumer Reports reviewed Yu Sleep?

No. I could find no Consumer Reports assessment of this product. It is a common search, and any page implying that such a rating exists is misleading you.

What does Reddit say about Yu Sleep?

Discussion is thin and mixed, which is itself informative for a product marketed as viral. Treat single anonymous testimonials in either direction as anecdotes. The 94-rating Amazon average is the better signal.

Is Yu Sleep safe?

The main concern is 5-HTP, a serotonin precursor that can interact with SSRIs, SNRIs, MAOIs, triptans and tramadol, with a risk of serotonin syndrome. Because the dose is not published, you cannot assess that risk yourself. If you take any of those medicines, speak to your prescriber before taking this. There is a second caution worth repeating: if you snore heavily or suspect sleep apnoea, get screened first, because relaxing the airway can make apnoea worse. The melatonin content is low enough to be unremarkable for most adults.

How much does Yu Sleep cost?

On the funnel there is no single-bottle option: two bottles are $138 plus shipping, three are $177, and six are $294. One bottle covers thirty nights, so the cheapest tier works out at about $1.63 a night, or roughly $595 a year taken nightly. On Amazon a single bottle is $49, which is the same $1.63 a night without the bundle. All funnel tiers carry a 60-day money-back guarantee.

Is Yu Sleep better than taking magnesium glycinate?

If magnesium is what you want, no. Yu Sleep costs about $595 a year and contains an undisclosed amount of magnesium; the six brands in my comparison range from about $91 to $395 a year at the dose used in trials, and all of them publish exactly what is in the bottle.

Will Yu Sleep make me groggy in the morning?

Less likely than a typical melatonin product, and that is a real point in its favour. Morning grogginess from melatonin is largely a dose effect, and at 0.9 mg this is well below the 5 to 10 mg commonly sold. The other ingredients are unquantified, so I cannot rule out effects from them.

Is there a refund if it does not work?

The funnel states a 60-day money-back guarantee on every package, described as no questions asked, and at least one Amazon buyer reports being unable to obtain one. Keep your order confirmation, note the date your parcel arrives, diarise the deadline, and read the refund policy linked in the site footer before ordering, because the terms that matter are there rather than in the headline. Buying through Amazon puts you under Amazon’s returns process instead.

Is Yu Sleep legit?

It is a real product, sold through a real Amazon listing with a real returns process, so it is not a scam in that sense. What it does not do is publish nine of its ten doses, which means you cannot check what you are paying for. My score is 5.5 out of 10 for that reason.

What are the most common Yu Sleep complaints?

Among the verified Amazon reviews: no effect after a week, difficulty getting a refund, a dropper that does not fill, headaches, and the price, which even satisfied buyers raise. One reviewer reported worse sleep apnoea and warned anyone on an SSRI about the 5-HTP.

Sources

Everything above was read from these pages. Where I say a figure is missing, it is missing from all of them.

• Yu Sleep — official sales page — the ingredient list, the 0.9 mg melatonin figure, the claims quoted above, the pricing tiers, the guarantee and the eighteen cited references. The same page is served at yusleeplabs.com and startyusleep.com.
• Amazon product listing, ASIN B0FV34B71M — the $49 single-bottle price, the 2.9/5 rating across 94 ratings, the best-seller ranks, the “up to 99% absorption” claim, the five ingredients named in the product description, and the customer reviews quoted above. Retrieved 18 September 2026.
• Sateia MJ et al. Clinical Practice Guideline for the Pharmacologic Treatment of Chronic Insomnia in Adults. J Clin Sleep Med. 2017;13(2):307–349 — the American Academy of Sleep Medicine recommendation on melatonin, quoted verbatim.
• NCCIH — Melatonin: What You Need To Know — where melatonin does have support, the 74–347% labelling variance, and the long-term safety position.
• Pigeon WR et al. Effects of a tart cherry juice beverage on the sleep of older adults with insomnia. J Med Food. 2010;13(3):579–583 — the effect-size comparison, and the trial dose.
• Losso JN et al. Pilot Study of the Tart Cherry Juice for the Treatment of Insomnia. Am J Ther. 2018;25:e194–e201 — the 240 ml twice-daily dosing used in the research.
• Herbal and Natural Supplements for Improving Sleep: A Literature Review — the evidence standing behind tart cherry, theanine, magnesium and the other ingredients named here.
• NIH Office of Dietary Supplements — Magnesium — intakes, the supplemental upper limit and drug interactions, for the magnesium component.

Prices and formulations were checked in September 2026, and the Amazon listing data on 18 September 2026. Both change without notice. This page is for general information and is not medical advice. If you are pregnant or breastfeeding, take prescription medication — particularly any antidepressant — or have a diagnosed condition, speak to a qualified professional before taking this or any supplement. If you have had trouble sleeping for more than three months, see a doctor rather than a supplement funnel.