Glycine vs Magnesium L-Threonate for sleep
Short answer: For sleep, users rate them about the same: 85% report improvement with Glycine (204 reports) and 84% with Magnesium L-Threonate (140 reports).
Glycine has 392 meta-analyses and 620 randomized trials on PubMed; Magnesium L-Threonate has 0 and 3.
Based on 562 reports about Glycine and 602 about Magnesium L-Threonate. Not medical advice.
| Glycine Supplement | Magnesium L-Threonate Supplement | |
|---|---|---|
| User score | 52 | 56 |
| Verdict | Mostly positive | Mostly positive |
| Positive of reports that state an outcome | 71% | 73% |
| Reports | 562 | 602 |
| Research | AResearch: Strong | CResearch: Limited |
| Meta-analyses / RCTs | 392 / 620 | 0 / 3 |
| Mainly used for | ||
| Focus % reporting improvement | 67% (9) | 99% (73) |
| Energy % reporting improvement | 92% (13) | 86% (14) |
| Sleep % reporting improvement | 85% (204) | 84% (140) |
| Anxiety % reporting improvement | 77% (48) | 94% (66) |
| Mood % reporting improvement | 88% (24) | 89% (35) |
| Memory % reporting improvement | 67% (3) | 90% (29) |
| Performance % reporting improvement | 100% (3) | 100% (2) |
| Recovery % reporting improvement | 100% (7) | 100% (2) |
| Pain & inflammation % reporting improvement | 100% (3) | 75% (4) |
| Digestion % reporting improvement | — | 33% (3) |
| Libido % reporting improvement | 50% (2) | — |
| Skin & hair % reporting improvement | 100% (10) | — |
| Longevity % reporting improvement | 100% (2) | — |
| Common side effects | insomnia, vivid dreams, anxiety, drowsiness | vivid dreams, insomnia, headache, anxiety |
| Typical dose reported | 2 g / daily | 6 caps / daily |
GlycineFull Glycine profile →
Latest review conclusion
In studies using high-throughput metabolomics, several blood amino acids appear to be consistently associated with the risk of developing type 2 diabetes.
Diabetes Care, 2016 ↗What a user said
“2 grams with 200mg magnesium before bed gives me crazy good sleep. Crazy vivid dreams.”
Magnesium L-ThreonateFull Magnesium L-Threonate profile →
What a user said
“I just tried magnesium theronate the other day and I feel like a new person... My memory recall is better too. Emotions and anxiety have levelled DRASTICALLY.”
Related comparisons
Percentages come from first-hand user reports and are not clinical outcomes. Talk to a doctor before starting, stopping or combining anything. How we rate