Valerian Root
Valerian for Sleep: A Systematic Review and Meta-Analysis
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4394901/
Valerian Root in Treating Sleep Problems and Associated Disorders—A Systematic Review and Meta-Analysis
Wild Cherry
Effect of tart cherry juice (Prunus cerasus) on melatonin levels and enhanced sleep quality
https://pubmed.ncbi.nlm.nih.gov/22038497/
Pilot Study of Tart Cherry Juice for the Treatment of Insomnia and Investigation of Mechanisms
Ashwagandha
Effect of Ashwagandha (Withania somnifera) extract on sleep: A systematic review and meta-analysis
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4394901/
Clinical evaluation of the pharmacological impact of ashwagandha root extract on sleep in healthy volunteers and insomnia patients: A double-blind, randomized, parallel-group, placebo-controlled study
Zinc
•Dietary Zinc as sleep Modulator
•https://pmc.ncbi.nlm.nih.gov/articles/PMC5713303/
•Effects of zinc supplementation on sleep quality in humans: A systematic review of randomized controlled trials