Head to head
Glycine vs Magnesium glycinate
On the strength of human evidence, Magnesium glycinate comes out ahead (evidence 50 vs 48). But they're often used for different things — read each claim before deciding.
Glycine
Limitedthe quiet, cheap sleep amino acid
Marketing intensity 42 of 100. Evidence strength 48 of 100. Verdict: Hype ≈ evidence.
Under-marketed and reasonably promising for sleep. The longevity buzz, though, is built almost entirely on worms and mice.
Full evidence on Glycine →Magnesium glycinate
▲ Trendingthe gentle form everyone reaches for sleep
Marketing intensity 72 of 100. Evidence strength 50 of 100. Verdict: Overhyped.
A well-tolerated, easily-absorbed form of magnesium with a small but real sleep signal. The 'fixes your sleep and anxiety' framing still runs ahead of the data.
Full evidence on Magnesium glycinate →Side by side
| Metric | Glycine | Magnesium glycinate |
|---|---|---|
| Overall tier | Limited | Moderate |
| Evidence score | 48/100 | 50/100 |
| Hype score | 42/100 | 72/100 |
| Verdict | Hype ≈ evidence | Overhyped |
| Safety concern | low | low |
Quick answers
Glycine or Magnesium glycinate — which has better evidence?
On the strength of human evidence, Magnesium glycinate comes out ahead (evidence 50 vs 48). But they're often used for different things — read each claim before deciding.
Can you take Glycine and Magnesium glycinate together?
This page compares the evidence, not interactions. Some supplements interact with each other or with medications — check each one's safety section and talk to a pharmacist before stacking.