What ingredients does the seller list?
The table records the components presented on the seller’s product page. It is not a transcription of a verified current Supplement Facts panel. Seller product page
YU SLEEP · CURRENT OFFER
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View Current Offer Affiliate link · offer details may change| Component | Amount available to this review | Interpretation |
|---|---|---|
| Melatonin | 0.9 mg per serving on seller page | Body-clock hormone; see the evidence and safety context below. |
| Red tart cherry extract | Not verified | A juice trial cannot establish equivalence to this extract. |
| 5-HTP | Not verified | Medication interactions need attention. |
| Magnesium glycinate | Not verified | Elemental magnesium quantity and preparation matter. |
| Apigenin | Not verified | Mechanism discussions are not proof of clinical benefit. |
| Lemon balm extract | Not verified | Extract type and amount are needed for a study comparison. |
| L-theanine | Not verified | Research on the ingredient is distinct from this blend. |
| GABA | Not verified | Oral supplement evidence has important limits. |
| Vitamin B6 | Not verified | Dream recall and improved sleep are different outcomes. |
| Vitamin B2 | Not verified | A nutrient’s biological role does not establish supplement benefit. |
What remains unknown about the amounts?
We could not verify a complete current label showing serving volume, all component quantities, other ingredients and warnings. “Not verified” does not mean an ingredient is absent, underdosed or illegal; it describes the limit of our source check.
Do not treat magnesium glycinate as a separately dosed glycine supplement, or compare the compound’s weight with elemental magnesium. Without the relevant quantities, a numerical comparison to a trial would create false precision.
Ask for a clear image of every label panel. Check the serving size, ingredient forms, amounts, other ingredients, lot details and usage warnings. Then compare the actual formulation with the research.
Does Yu Sleep contain melatonin?
The seller lists melatonin. For context, NCCIH describes possible short-term effects including headache, dizziness, nausea and sleepiness, and notes uncertainty about long-term safety. A smaller amount does not guarantee freedom from next-day effects. NCCIH: Melatonin — What You Need To Know
Whether melatonin is useful depends on the sleep problem being considered. Do not assume it resolves every cause of waking during the night. For medication questions, continue to interactions and suitability.
What does the ingredient evidence actually show?
| Research checked | Finding or scope | Why this is not product proof |
|---|---|---|
| Magnesium: 2023 systematic review | Observational associations contrasted with uncertain findings from randomized trials. Read review | Different forms, populations and doses; the blend’s amount is unverified. |
| Oral GABA: 2020 systematic review | Fourteen studies; the authors judged sleep evidence very limited. Read review | Biological function in the brain is not equivalent to demonstrated benefit from an oral blend. |
| Vitamin B6: 2018 randomized trial | In 100 participants, a five-day trial found increased dream recall, without significant changes in other sleep-related variables for B6. Read trial | It used 240 mg pyridoxine, not this verified formulation. This is not a dose recommendation. |
We also located records for L-theanine, apigenin, lemon balm and 5-HTP research. We did not complete a full methods-and-results appraisal of those records, so this page does not assign them efficacy grades. Bibliographic presence alone is not a positive result.
What about the “cherry trick”?
A published randomized study examined tart cherry juice and sleep-related outcomes. The material studied was juice, not this finished formula. The phrase used in product marketing should not be mistaken for the name of a validated treatment protocol. Tart cherry juice: randomized trial (2012)
To make a sound comparison, we would need the extract preparation, its amount and the actual product data. Until then, the sensible conclusion is an applicability gap, not a proven effect.
Has the finished product been clinically tested?
We did not identify a Yu Sleep randomized trial from the public searches used here. Ingredient papers were found; an independently identifiable trial of this exact formula was not. Our search was limited and cannot establish that no trial exists.
No product-specific absorption study or traceable batch testing certificate was verified in this review. We therefore do not endorse claims of enhanced absorption, permanent sleep repair or guaranteed results. Absence from this review is not proof that documentation does not exist.
Use the evidence with the right limits
Read the overall review for the decision summary and the safety guide for practical cautions. Our sources policy explains why seller information, research and customer accounts are treated differently.
Read the label and the research
Use our label-reading checklist to identify missing information and our research guide to judge whether a study answers the product question.
Sources & references
Checked September 18, 2026. Citations describe the scope of the material reviewed, not an endorsement of the product.
- Seller product page
- NCCIH: Melatonin — What You Need To Know
- Magnesium and sleep: systematic review (2023)
- Oral GABA: systematic review (2020)
- Vitamin B6, dreaming and sleep: trial (2018)
- Tart cherry juice: randomized trial (2012)
- L-theanine sleep outcomes: review (2025)
- Apigenin, sleep and aging: review (2024)
- Lemon balm clinical literature: review (2024)
- 5-HTP in older adults: trial (2024)