1
Red Tart Cherry Extract
Tart cherry is included as a fruit extract associated with naturally occurring melatonin and sleep-related research.
A 2012 human study reported increases in total sleep time and sleep efficiency after tart cherry juice supplementation. PubMed
2
5-HTP
5-HTP is a precursor used by the body in serotonin-related processes, which are closely connected with normal sleep chemistry.
A 2024 randomized trial reported improvement in some sleep-quality components in older adults receiving 5-HTP. PubMed
3
Vitamin B6
Vitamin B6 participates in normal neurotransmitter and amino-acid metabolism and is included alongside 5-HTP and melatonin.
4
Vitamin B2
Vitamin B2 supports normal energy metabolism and contributes to the broader nutrient base of the formula.
5
Magnesium Glycinate
Magnesium glycinate is a commonly used magnesium form in evening supplements and contributes magnesium to the formula.
A 2025 randomized trial of magnesium bisglycinate reported a modest improvement in insomnia severity in adults with poor sleep quality. PubMed
6
Apigenin
Apigenin is a plant flavonoid associated with calming botanicals and is often used in nighttime formulas.
7
Lemon Balm Extract
Lemon balm is a traditional calming botanical included to support a relaxed evening routine.
8
L-Theanine
L-theanine is an amino acid commonly used for relaxed mental focus without being positioned as a sedative ingredient.
A 2025 meta-analysis included 18 trials in its quantitative analysis of L-theanine and sleep outcomes. PubMed
9
Melatonin 0.9 mg
Melatonin is the body's natural night-time hormone signal. YU Sleep contains 0.9 mg per serving.
10
GABA
GABA is an inhibitory neurotransmitter included in many evening formulas aimed at relaxation and bedtime calm.