Glycine
L-Glycine
SLEEP, COLLAGEN & CALM
Glycine is the simplest amino acid with surprisingly profound effects on sleep quality, collagen production, and nervous system calm. It supports restful sleep, skin and joint health, and serves as a building block for glutathione.
30-day supply
Key Benefits
Supports restful sleep quality
Promotes collagen synthesis for skin and joints
Supports nervous system calming
Aids in detoxification and glutathione production
Supports These Goals
Why you'll love it
Glycine is proof that simple molecules can do extraordinary things. This tiny amino acid — the smallest of the 20 — plays an outsized role in sleep, beauty, and detoxification.
Let's start with sleep. Research shows that glycine taken before bed lowers core body temperature and promotes faster sleep onset. A landmark Japanese study found that 3g of glycine before bed significantly improved subjective sleep quality, reduced daytime sleepiness, and improved cognitive performance the next day. Unlike melatonin, glycine doesn't make you groggy — it works by helping your body temperature drop naturally, which is the physiological trigger for sleep.
Glycine is also essential for collagen production. It makes up roughly one-third of all collagen in your body, so adequate glycine intake directly supports skin elasticity, joint health, and connective tissue repair. And it doesn't stop there — glycine is a precursor to glutathione (your master antioxidant) and supports a calm nervous system by acting as an inhibitory neurotransmitter in the brainstem.
Clinical Evidence
Our recommendations are grounded in published clinical research. Here are key studies supporting the benefits of Glycine.
Glycine + NAC reverses age-related oxidative stress and inflammation
Supplementing glycine and N-acetylcysteine (GlyNAC) in older adults improves glutathione deficiency, oxidative stress, mitochondrial dysfunction, inflammation, and aging hallmarks
2023
Glycine reduces fatigue and sharpens thinking after poor sleep
The effects of glycine on subjective daytime performance in partially sleep-restricted healthy volunteers
2012
Study titles shown are simplified summaries of the original research for readability. Original titles are shown in italics below each heading. All studies cited are from peer-reviewed journals indexed in PubMed. Links open in a new tab to the original source. These studies are provided for informational purposes and do not constitute medical advice.
How much do I really need?
Take one 1,000mg capsule daily. For sleep support, take 30-60 minutes before bedtime. For collagen and general health benefits, timing is less critical — with a meal is fine. Glycine has a mildly sweet taste and is well-tolerated.
Safety & Transparency
Full transparency — here's exactly what's in every capsule, verified by our manufacturer.
Third-Party Tested
Every batch is independently tested by ISO-17025 accredited labs for purity, potency, and contaminants.
Doctor Formulated
Designed by healthcare professionals using evidence-based research and clinical expertise.
cGMP Certified
Manufactured in cGMP & UL certified, FDA-registered facilities with a flawless inspection record.
As with any natural health product, you should consult your healthcare practitioner on the use of this product. Store product in a cool and dry place. Keep out of reach of children. If you experience an adverse event or allergic reaction, discontinue use immediately and contact a healthcare professional.
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