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Sleep Signal Lab guideYu Sleep Ingredients & Formula Guide
Current published information describes a 2 mL (two-dropper) serving. Exact amounts are disclosed for melatonin and certain vitamins, while seven named ingredients share a proprietary blend.
| Ingredient | Disclosed amount | Editorial note |
|---|---|---|
| Melatonin | 0.9 mg | Exact amount disclosed. |
| Vitamin B2 | 0.5 mg | Exact amount reported in 2026 formula information. |
| Vitamin B6 | 0.5 mg | Exact amount reported in 2026 formula information. |
| Tart cherry, magnesium glycinate, apigenin, lemon balm, 5-HTP, L-theanine, GABA | 637 mg combined | Individual amounts are not disclosed in the proprietary blend. |
Formula information can change. Check the Supplement Facts panel on the bottle you receive before use.
Why the proprietary blend matters
Knowing that an ingredient is present is not the same as knowing whether the serving contains an amount comparable to a research protocol. That is why we avoid translating ingredient studies into product-level promises.
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Ingredient guides
Sources
- Yu Sleep ingredient information — manufacturer/offer-site claims; verify against the bottle label.
- NCCIH: Melatonin — What You Need to Know — government health information.
- PubMed: L-theanine systematic review/meta-analysis (2025) — ingredient-level research.