Medical disclaimer: SnoozeVerdict summarizes what people say about sleep supplements on Reddit. It is not medical advice, and nothing here is meant to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the Food and Drug Administration. Talk to your doctor or pharmacist before starting a supplement, especially if you are pregnant, take medicines (including sleep or mood medicines), or have a medical condition. Poor sleep that lasts for months, loud snoring or gasping at night, or falling asleep during the day while driving or working needs a doctor, not a supplement. Full disclaimer.

Magnesium glycinate vs Glycine

On Reddit, owners rate Magnesium glycinate higher overall (4.0 vs 3.9). Scores summarize self-reported experiences and are not evidence that either will work for you.

Magnesium glycinateGlycine
Typecapsules or powderpowder or capsules
SnoozeVerdict score4.03.9
Owner sentiment3.63.7
Recommendations4.43.4
Tolerability4.44.5
Owner comments1039281
Rated comments602143
Unwanted effects reported15%10%
Top praiseDose & timing, Deeper sleepDose & timing, Deeper sleep
Top complaintsSide effects, Dose & timingSide effects, Dose & timing

By sleep problem

ContextMagnesium glycinateGlycine
Falling asleep51 of 64 positive8 of 11 positive
Staying asleep36 of 49 positive9 of 14 positive
Morning grogginess25 of 55 positive2 of 4 positive
Deep sleep36 of 44 positive20 of 22 positive
Anxiety at night13 of 22 positive1 of 3 positive
Vivid dreams9 of 17 positiveToo few comments
Jet lag & shift work4 of 4 positiveToo few comments

What owners say about Magnesium glycinate

3/5 Side effects

“magnesium glycinate gave me the worst insomnia, everyone says it helps sleep but my brain just would not shut off for hours”

owner comment via r/Supplements · 2026-09-08 · 153 upvotes
5/5

“magnesium glycinate before sleep make huge difference for me, i can't go without now”

owner comment via r/Supplements · 2026-08-04 · 54 upvotes
3/5 Morning grogginessSide effects

“magnesium glycinate knocks me out cold but i wake up groggy if i take too much”

owner comment via r/Supplements · 2026-08-07 · 38 upvotes

Full Magnesium glycinate page →

What owners say about Glycine

4/5 Deeper sleep

“glycine on its own was the missing piece for me for years.”

owner comment via r/sleep · 2026-08-27 · 22 upvotes
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.”

owner comment via r/Supplements · 2026-06-04 · 18 upvotes
2/5 Side effects

“i experience a paradoxical effect to glycine, it gives me extreme anxiety & insomnia.”

owner comment via r/Supplements · 2026-09-08 · 17 upvotes

Full Glycine page →

Talk to a doctor or pharmacist before switching or combining supplements, particularly if you take other medicines.