Independent Research

Sleep Ingredient Research Library

Evidence-oriented ingredient explainers for compounds found in Yu Sleep, with clear separation between ingredient research and finished-product claims.

Last updated September 9, 2026Written by Yu Sleep Research Editorial TeamIndependent affiliate site

Tart Cherry

What tart cherry contains and what human sleep studies can and cannot show.

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5-HTP

Serotonin pathway context, limited sleep evidence and safety considerations.

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Vitamin B6

Vitamin B6 biology and why presence in a formula is not proof of sleep efficacy.

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Vitamin B2

Riboflavin biology and the label’s disclosed amount.

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Magnesium Glycinate

Magnesium, sleep research and medicine-interaction considerations.

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Apigenin

A flavonoid found in plants including chamomile; evidence remains limited.

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Lemon Balm

Traditional use, small studies and evidence limits.

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L-Theanine

Relaxation research, study design and dose-comparison limits.

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Melatonin

Circadian timing, evidence by condition and safety.

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GABA

Neurotransmitter role and uncertainty around oral supplemental GABA.

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