Glycine vs Taurine for sleep
Short answer: For sleep, more users report improvement with Taurine — 92% of 99 reports, versus 87% of 255 for Glycine.
Glycine has 392 meta-analyses and 620 randomized trials on PubMed; Taurine has 112 and 227.
Based on 695 reports about Glycine and 1,053 about Taurine. Not medical advice.
| Glycine Supplement | Taurine Supplement | |
|---|---|---|
| Users say it helped | 70%helped299 reports · high confidence | 75%helped379 reports · high confidence |
| Verdict | Mostly positive | Mostly positive |
| Research | AResearch: Strong | AResearch: Strong |
| Meta-analyses / RCTs | 392 / 620 | 112 / 227 |
| Mainly used for | ||
| Sleep % reporting improvement | 87% (255) | 92% (99) |
| Anxiety % reporting improvement | 78% (60) | 93% (209) |
| Mood % reporting improvement | 87% (39) | 89% (57) |
| Energy % reporting improvement | 94% (17) | 90% (59) |
| Focus % reporting improvement | 62% (13) | 82% (40) |
| Common side effects | vivid dreams, drowsiness, fatigue, brain fog | drowsiness, vivid dreams, headache, irritability |
| Typical dose reported | 2 g / daily | 3-4 g |
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 ↗“2 grams with 200mg magnesium before bed gives me crazy good sleep. Crazy vivid dreams.”
Taurine showed noteworthy effects in preventing hypertension and enhancing cardiac function. Individuals prone to CVDs may find it advantageous to include taurine in their daily regimen.
Nutr J, 2024 ↗“it really is a smooth feeling. I had some music playing and actually enjoyed doing the dishes. It just put me in a very overall relaxed state.”
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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