YU Sleep ReviewsIndependent Research & Buyer Guides
Source Library

References & Source Library

Every citation on this site resolves to a primary, institutional, or peer-reviewed source. This page collects them; individual articles cite the subset they use.

Product and commerce sources

  1. YU Sleep product label (current panel), as transcribed on our supplement facts page.
  2. Vendor sales and policy pages — getyusleep.com: pricing, guarantee statement, shipping policy, refund policy, support contact. Accessed September 2026.

Government and institutional

  1. NIH Office of Dietary Supplements. Melatonin: Fact Sheet for Health Professionals. ods.od.nih.gov — link
  2. NIH Office of Dietary Supplements. Magnesium: Fact Sheet for Health Professionals. — link
  3. NIH Office of Dietary Supplements. Vitamin B6: Fact Sheet for Health Professionals. — link
  4. NIH Office of Dietary Supplements. Riboflavin: Fact Sheet for Health Professionals. — link
  5. U.S. Food & Drug Administration. Dietary Supplements: What You Need to Know. — link

Peer-reviewed literature

  1. Ferracioli-Oda E, et al. Meta-analysis: melatonin for the treatment of primary sleep disorders. PLoS One, 2013. PubMed 23691095
  2. Howatson G, et al. Effect of tart cherry juice (Prunus cerasus) on melatonin levels and enhanced sleep quality. Eur J Nutr, 2012. PubMed 22038497
  3. Hwang J, et al. GABA and l-theanine mixture decreases sleep latency and improves NREM sleep. Pharm Biol, 2019. PubMed 30707852
  4. Zhao Y, et al. A Novel Theanine Complex, Mg-L-Theanine Improves Sleep Quality via Regulating Brain Electrochemical Activity. Front Nutr, 2022. PubMed 35495958
  5. Pillsbury C, et al. The impact of 5-hydroxytryptophan supplementation on sleep quality. (systematic context), 2024. PubMed 38309227
  6. Xie Z, et al. A review of sleep disorders and melatonin. (context), and related melatonin mechanism literature. PubMed 11983310 (GABA mechanisms and sleep)
  7. Peuhkuri K, et al. Dietary factors and fluctuating stress levels as modulators of melatonin secretion and tart cherry pilot work: PubMed 28901958 (tart cherry juice pilot in older adults)

How citations are used

  • Product facts cite sources 1–2.
  • Ingredient evidence cites 3–14 at the strength tier named in each article.
  • Safety statements cite 3–7 plus standard interaction reference literature.

A citation supports the specific sentence it follows — never the finished product's efficacy, for which no trial exists. Suggesting a better or newer source? Contact us.