









💤 Unlock your best night’s sleep—naturally and powerfully refreshed!
Life Extension Glycine delivers a potent 1000 mg dose of this semi-essential amino acid per capsule, promoting relaxation and high-quality sleep without next-day drowsiness. Crafted with non-GMO, gluten-free, and vegetarian ingredients, it supports cognitive function and memory while being free from common allergens. Trusted by thousands, this supplement is scientifically formulated to help busy professionals calm their minds and wake up energized.










| ASIN | B00B35A394 |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #2,217 in Health & Household ( See Top 100 in Health & Household ) #27 in Blended Vitamin & Mineral Supplements #303 in Sales & Deals |
| Brand | Life Extension |
| Brand Name | Life Extension |
| Color | Off White |
| Container Type | Bottle |
| Customer Reviews | 4.6 out of 5 stars 2,867 Reviews |
| Diet Type | Vegetarian |
| Dosage Form | Capsule |
| Flavor | Unflavored |
| Global Trade Identification Number | 00737870166917 |
| Item Dimensions | 2.37 x 2.37 x 4.06 inches |
| Item Form | Capsule |
| Item Nype Name | Glycine Supplement |
| Item Weight | 5.28 ounces |
| Manufacturer | Life Extension |
| Material Features | Non-GMO |
| Material Type Free | Gluten Free |
| Model Name | Glycine |
| Number of Items | 1 |
| Primary Supplement Type | Glycine |
| Product Benefits | Promotes relaxation, Promotes healthy quality sleep without causing daytime drowsiness, Supports healthy glucose & fructose metabolism, Supports connective tissue throughout the body |
| Special Ingredients | Glycine |
| Specific Uses For Product | Sleep, Immune Support, Memory & Cognition |
| Supplement Formulation | Individual Supplement |
| Total Servings Per Container | 100 |
| UPC | 737870166917 |
| Unit Count | 100.00 Count |
J**L
Recommended by body builders. But I didn’t expect Glycine to help my sleep! No side effects
So I had Glycine on a list of supplements to try because I follow some healthy body builder types online. I am not one myself though. At all. I am not even a fit person nor a fitness fanatic at all. I’m older and not svelte currently. (I prefer natural remedies as first line defense when possible.) So I’m not a fitness icon here. But I do follow and read these healthy peoples posts, and they recommended Glycine. (Taurine too even. Plus many others). But I had Glycine on my radar the most. So Glycine has been on my list of supplements to try, but I just wasn’t in a rush since I’m not building muscles. Now I deal with insomnia lately. And I had read somewhere that Glycine could help. This was news to me since I had only associated Glycine with body building and muscles. So then I really wanted to give it a try for sleep issues. And so I ordered this bottle. I don’t have any loyalty to any Glycine brand yet. It was a pretty random brand choice. It’s my first time trying Glycine so it wasn’t easy to choose with the vast variety on amazon. So my brand choice is totally random. Maybe the price and review numbers is why I landed on this brand. I can’t recall. Just had to choose and start somewhere. So I pulled the trigger and just placed an order to try Glycine. So now I take one Glycine in the later evening and then two more Glycine right near and closer to bedtime. And I always get drowsy with the Glycine. Every time. I can fall asleep now and I don’t tend to fight it. The Glycine seems to help with that too. It really does work for me and I’m a deeply ingrained night owl. I prob have a hyperactive brain. I know I used to be like this since I was a baby. A serious Night Owl. My mother said I was always playing in my crib at midnight a lot. Sigh. It’s inherent and nothing I can really do except manage it. If I take the Glycine too early though I I’ll sleep too soon and wake up at like 3-4 am. So I take it closer to 10 pm to get sleepy and to stay asleep longer. Glycine seems to really help me with my insomnia and I take it nightly now. Three is what is mentioned on bottle. And that’s my full dose so far. Since I’m a supplement user I’m already very aware to look for changes and side effects. So with any supplement I always monitor any minute or major changes and any extra side effects. I have none with Glycine. None. Just the good ones I wanted. My experience is just having that desired drowsy effect that I need. It works well for me and is mild in side effects but powerful in what I need it for. No cotton mouth no headaches no weird dreams no hangover head no lingering drowsiness. Just a good drowsy effect upon taking it and then a good sleep and a good wake up. It’s mild in use but powerful too. It has nothing bad about it. It works perfectly to address my insomnia with my overly active brain. I hope this helps everyone who might be looking for a good insomnia and sleep regulator. This does it for me. And I’ve tried many things.
~**~
Marked and measurable improvement in sleep type and quality!!!
After far too many issues with achieving deep, restorative sleep that spans many years (verified by both my sleep app and my Apple Watch) which coincided with peri/menopause, I was on a mission to find a more natural alternative to RX sleep medications. I did a lot of reading, and decided to look into glycine a bit more. While reviewing options for it available here on Amazon, I came across Life Extension Glycine (1000 mg). I'm a highly skeptical person by nature, and I typically think that natural alternatives aren't usually more effective than our RX options, but let me tell you that I'm now a believer in the effectiveness of glycine, and here's why: I changed nothing in my routine when I started taking glycine. Beginning with my first dose, which I took around 9 PM that night, my sleep app told me that I'd achieved AN HOUR AND TWENTY + MINUTES OF DEEP SLEEP. For reference, my average hovers around only 30 +/- minutes per night. I'd woken up that next morning feeling surprisingly refreshed, so imagine how shocked I was at such a marked difference after only one dose! Of course, I sort of wrote that off as being an outlier, but after my second, third, and fourth nights with much the same experience, I couldn't (and can't) ignore that glycine appears to absolutely be having a positive, effective influence on the amount and type of sleep that I'm getting. It's been over a week of a marked improvement since adding this supplement to my night time routine. I'm feeling more energetic during the day, and am falling asleep far more easily at night. The capsules are colorless, tasteless, odorless, appear to dissolve easily and are absorbed quickly (I start to feel tired about 2-3 hours after taking a single capsule). I'm sleeping through the entire night, so the effects seem to last a solid 6+ hours, and it leaves me without feeling any kind of sluggishness or residual fatigue the next morning. I couldn't be happier with this purchase. This is the one supplement that I can say with absolute certainty has had exactly the effect all the hype claims, and thus far, the it's been better than my RX sleep medication as it comes without the morning grogginess or the concern of taking a RX med. This is worth a subscribe and save, and the cost is worth every single penny. This is rapidly becoming a staple in my night time routine, and deservedly so.
M**D
Glycine- Brain antioxidant
I study biochem so i know a bit about glycine and i had to read a couple of research papers before taking this... first dose: within 45 minutes i felt a wave of relaxation and heaviness, eyes felt heavy too like you are ready to sleep. going into bed looking at my cellphone as i usually do, ,,after a few moments i didnt want to look any more and closed my eyes.. i fel asleep soon after... no residual feelings in the morning, didnt wake up midnight. facts we know: Glycine has atleast three benefits. 1. brain antioxidant that prevents neurons to be damages by oxidant substances > prevent neural death> slow down cognitive loss> slow down alzeimehrs. 2.it works on GABA which is basically the same receptor that Alprazolam( Xanax ,and Ambien) work and reduces stress, and promotes sleep but without the dependency issues with those drugs. 3.it also enhances Melatonin secretion which prootes sleep 4.it acts on NMDA receptor which through Calcium increases what called a Long-term potentiation which means it increases Cognitive ability and also learning. and all said,, it is a natural protein which we take in much less amounts that whats inside this pill so i am not worried about any sideeffects.. any way... studies show that taking Glycine and NAC together can increase the synergistic effect of these two to produce our bodies strongest antioxidant which is Gluthathione... the one we loose when we age,, which allows oxidative damage to slowly take away our healthy cells...and make us age faster.
N**G
Mild effects so far, but pills are very large
I bought this glycine supplement as a sleep aid to use in addition to magnesium glycinate, which already works very well for me. The idea was that glycine might help with falling asleep and possibly regulate body temperature, which is often mentioned as a factor that can interrupt sleep. After using this for a few months on and off, and more consistently over the past several nights, my experience has been mixed. I may be seeing a slightly better overall sleep pattern, but the improvement hasn’t been dramatic or clearly attributable to this. The most recent nights have been a bit better than a few days ago, but not enough to confidently say this is making a significant difference. 👍Pros - Easy to add alongside other sleep supplements. - No noticeable side effects for me. - Might offer mild sleep pattern improvement. 👎Cons - Effects are subtle and hard to measure. - Capsules are very large. - I have read some things that say the typical dosage should be 3x what they recommend, so not sure what to take. For now, I’m giving this four stars because it hasn’t caused any problems and might be helping a little, but I’m still unsure how much impact it’s really having. I’ll continue using it and reassess over time.
B**T
Has become a staple in my sleep routine
Game changer for sleep. I started taking these and I sleep like an absolute baby. My wife also has a hard time falling asleep and she takes these? Sleeps like a baby. Magic. I take 3 of these along with my magnesium and NAC and I've seen a dramatic difference in Sleep Quality.
B**T
Great Product!
First think I noticed is how much softer my skin feels. Seems to be really lowering my inflammation!
E**E
Legit
Adding 3g of this to my evening supplement stack an hour before bed was the true difference maker. I started actually remembering parts of my dreams, and I woke up less in the middle of the night.
D**H
I’m a fan!
I ran out about a week ago and put off reordering. Never again. Life Extension Glycine helps me rest deeply through the night. No weird taste either.
Trustpilot
2 weeks ago
2 months ago