May help improve sleep quality and reduce daytime sleepiness.
No. Melatonin is a hormone that tells your body it's time to sleep. Glycine is an amino acid that calms the nervous system. Some people respond better to one than the other.
Unlikely. Most people report the opposite – feeling clearer and less groggy than usual. It doesn't have the 'hangover' effect of some sleep aids.
Yes. There's no evidence of tolerance or dependency. It's an amino acid your body is already familiar with.
Click through to the studies bar for the evidence base.
See the dosing guide below.
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Some ingredients build up over weeks. Others act fast.
The compound effect of consistent dosing.
Check the cautions section if you have a pre-existing condition.
Some ingredients you feel. Others just work in the background.
Nope, it's naturally slightly sweet. Mixes easily into water or tea. Much better than most supplement powders.
Yes, it's a popular combination. They work on different pathways to promote relaxation and sleep. Many people take both.
It can. By calming the nervous system and helping regulate body temperature, it often leads to deeper, more consistent sleep through the night.
No. It's not a sedative or a hypnotic drug. It's an amino acid and doesn't create dependency.
Most research uses 5.0g daily. Below 2.0g, you're probably wasting money. Above 10.0g, no extra benefit. The curve plateaus. Safe upper limit ~ 20.0g.
Glycine acts as an inhibitory neurotransmitter, reducing neuronal excitability in the central nervous system, promoting relaxation and sleep. It may also influence core body temperature.
Research suggests glycine can improve sleep quality by helping to regulate the body's sleep-wake cycle. While the evidence is promising, more extensive research is needed to determine its effectiveness for various sleep disorders and individual responses.
Found in high-protein foods, especially in collagen and gelatin. Meat, fish, dairy, and legumes are all good sources.
Glycine (Sleep) interacts with other supplements and meds. The analyzer flags interactions, dose mismatches, and timing collisions across your whole list.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.