May help improve sleep quality and reduce daytime sleepiness.
Effective Dose
3-5 grams
Onset
Fast
Cost
Budget
Cycle
Glycine can be taken daily, as needed, for sleep support.
7 things you need to know
What it does
May help improve sleep quality and reduce daytime sleepiness.
Worth it?
7/10. Glycine is a conditionally essential amino acid that plays a role in neurotransmitter function and may improve sleep for some individuals. While not as potent as prescription sleep aids, it's a relatively safe and accessible option worth considering.
How much to take
3-5 grams
Price
Cheap (under $15/month)
How fast it works
You feel it within an hour
Safety
Check if: pregnancy, breastfeeding
What people say
Users often report feeling more relaxed and experiencing a slightly easier time falling and staying asleep. Some report improved mental clarity upon waking.
Glycine can be found in high-protein foods like meat, fish, dairy, and legumes, and is also synthesized by the body.
"Users often report feeling more relaxed and experiencing a slightly easier time falling and staying asleep. Some report improved mental clarity upon waking."
Research backing for this ingredient
Some evidence, more research needed
Limited
Not yet
Generally accepted with some debate
"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."
Glycine is an amino acid that acts as an inhibitory neurotransmitter in the brain. It may help to calm the nervous system and promote relaxation, which can lead to improved sleep. It may also play a role in regulating the body's sleep-wake cycle. It might be a reasonable alternative to melatonin or valerian root.
Products below minimum dose are likely ineffective
When
Evening
How
3-5 grams
Food
Take 30-60 minutes before bedtime for sleep support.
Effects are typically noticeable within an hour of ingestion.
Glycine can be taken daily, as needed, for sleep support.
Check for specific interactions.
Glycine (Sleep) is categorized as a amino acid.
Scientific consensus score: 7/10.
Evidence quality: MODERATE.
Add Glycine (Sleep) to your stack analyzer or compare it with other ingredients.
Not medical advice. Always consult a healthcare provider.