Glycine Dosage and Timing: What Owners Report
In 54 Reddit owner comments that give an amount, the typical Glycine dose was 3 g (middle half: 3 to 5 g). The timing people mention most is at night or before bed (96 comments). These numbers describe what people with sleep problems say they take on Reddit (May 2026 to October 2026); they are not dosing advice. Follow the label and ask a doctor or pharmacist, especially if you take medicines.
Amounts owners mention
| Unit | Comments | Typical (median) | Middle half | Most-mentioned amounts |
|---|---|---|---|---|
| g | 54 | 3 | 3 to 5 | 3 (24), 5 (17), 1 (6) |
| mg | 11 | 1800 | 600 to 3000 | 600 (4), 3000 (4), 1000 (2) |
| tsp | 3 | 1 | 1 to 1 | 1 (3) |
Counted from amounts written next to the name Glycine in 67 owner comments (a comment can give more than one amount). Products differ in strength, so a number of capsules or scoops is not comparable between brands. Most-mentioned: 3 g (24), 5 g (17), 1 g (6).
What studies and NIH sources say
- Glycine is a simple amino acid; Japanese studies gave about 3 g before bed and measured subjective sleep quality.[PubMed]
When people take it
| Timing mentioned | Owner comments |
|---|---|
| At night or before bed | 96 |
| In the morning | 17 |
| On an empty stomach | 6 |
Phrases such as "before bed", "in the morning" or "with food" near the name Glycine.
How long it takes, according to owners
| Timeframe mentioned | Comments | Positive | Negative |
|---|---|---|---|
| Minutes to hours | 1 | 0 | 0 |
| Within the first week | 1 | 0 | 0 |
| 1 to 4 weeks | 3 | 2 | 1 |
| More than a month | 1 | 1 | 0 |
6 owner comments mention a timeframe such as "after 2 weeks", "within an hour" or "it took a month". A timeframe can describe when someone noticed a change or how long they tried it before giving up, so read it as a rough signal.
2/5 Emotional bluntingMood“I'd like to add a caveat about glycine; it caused depression and anhedonia when I used it to support my sleep.”
4/5 CalmingCost“For me it was glycine on its own. I didn't expect much, but taking it before bed noticeably improved how deep and calm my sleep felt within a week or so. It's cheap, simple, and way less talked about than it probably should be.”
In their words
5/5 Taste & form“Glycine is what I swear by. One teaspoon with green tea in the morning and one before sleep. I took it primarily for collagen but with time noticed the effect of calmness, it is now harder for me to become agitated and stressed.”
4/5 CostDeeper sleep“I have gone from waking every few hours to full nights of great sleep with this stack: 3g of glycine and 2 capsules of SleepElite about 30 minutes before sleep.”
4/5 Deeper sleep“I take glycine like 30 minutes before bed and it definitely helps with sleep quality.”
4/5“Glycine on its own is great too and it is a mast cell stabilisator.”
4/5 Side effectsDeeper sleep“I think certain people can't tolerate the Glycine.”
4/5 Takes time“I've been taking NAC+Glycine for about six months, scoop in the morning and a scoop at night and it takes a few months but I definitely feel better....like the OP said, it's not a high or rush, I just feel...better.”
Glycine overall: 3.9 from 281 owner comments.
Frequently asked
How much Glycine do people take?
In 54 Reddit owner comments that give an amount, the typical Glycine dose was 3 g (middle half: 3 to 5 g). That is what people report, not a recommended dose; follow the product label and your doctor's advice.
When do people take Glycine?
The timing people mention most is at night or before bed (96 comments). In the morning: 17; On an empty stomach: 6.
How long does Glycine take to work?
6 owner comments mention a timeframe near Glycine (for example "after two weeks" or "within an hour"). Minutes to hours: 1; Within the first week: 1; 1 to 4 weeks: 3; More than a month: 1. Individual experiences vary widely.