Illustration, not a product photo.
Magnesium bound to the amino acid glycine; the form most discussed for calm and sleep.
1039 owner comments (602 with a clear rating) from r/Supplements, r/sleep, r/insomnia, r/Anxiety, r/Nootropics, r/Stress, May 2026 to October 2026. Top 10% of the 20 rated supplements.
Value for money: Not rated. The example products differ too much in dose to compare cost fairly. How we score.
Magnesium glycinate is rated about average among the supplements we track: 4.0/5. Of 602 rated owner comments, 441 were positive, 40 mixed and 121 negative; 90 mention an unwanted effect. People talk most about side effects and deeper sleep.
Reddit comments are self-reported and unverified. They tell you what people noticed, not whether a supplement works or is safe for you.
Read how magnesium forms compare for sleep. Compare the top-rated options for jet lag by sleep problem. Reddit owners also rank supplements by racing thoughts reports.
Supplements can interact with medicines. Talk to a doctor or pharmacist first, especially if you are pregnant, take prescription medicine (including sleep, anxiety or antidepressant medicines), or have ongoing sleep problems. See sleep supplement safety and interactions.
| Context | Rated owner comments | Positive | Negative | Unwanted effects |
|---|---|---|---|---|
| Falling asleep | 64 | 51 | 7 | 8 |
| Morning grogginess | 55 | 25 | 24 | 41 |
| Staying asleep | 49 | 36 | 11 | 4 |
| Deep sleep | 44 | 36 | 3 | 2 |
| Anxiety at night | 22 | 13 | 7 | 3 |
| Vivid dreams | 17 | 9 | 7 | 17 |
| Jet lag & shift work | 4 | 4 | 0 | 0 |
5/5“magnesium glycinate before sleep make huge difference for me, i can't go without now”
4/5“Magnesium glycinate, improved my sleep, fewer muscle twitches, and helped me feel less tension etc.”
4/5 Side effectsFalling asleep faster“Magnesium Glycinate. Everyone was screaming how great it was. It made me sleepy and feel drugged.”
2/5 Side effects“Glycinate absolutely ruins my sleep, I wake up gasping for air, and am constantly tossing and turning.”
2/5 Falling asleep fasterTakes time“Started magnesium glycinate for sleep, didn't really knock me out but after two weeks I noticed my jaw wasn't clenched into a fist all day.”
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”
3/5 Morning grogginessSide effects“magnesium glycinate knocks me out cold but i wake up groggy if i take too much”
1/5“BTW, glycinate gives some insomnia. It gave me horrible, noticeable insomnia”
4/5 Deeper sleep“and i started taking magnesium before bed, the glycinate kind, it helped with the body aches and sleep quality”
4/5 Taste & form“Magnesium glycinate is great for heart nerve and bone health.”
2/5 Falling asleep faster“I take magnesium glycinate but still wake up sometimes and just stare at ceiling for 2 hours.”
5/5“Magnesium Glycinate (definitely a sleep game changer for me and many other people)”
4/5 CalmingDeeper sleep“Had to toss mag glycinate bc it kept me in light sleep all night.”
2/5“Magnesium glycinate significantly impacted my sleep in a negative way.”
4/5 Deeper sleepFalling asleep faster“man that chart looks brutal, i had similar issue during my air force days and magnesium glycinate before bed helped me stay asleep longer instead of just falling asleep easier.”
4/5“Magnesium glycinate before bed and getting aggressive about protein intake first thing in the morning helped me more than any supplement stack I tried.”
4/5“A few years ago I started taking magnesium glycinate at night and I was in pure bliss for about 6 weeks.”
3/5“I also take magnesium glycinate nightly...”
4/5 Stomach upsetTaste & form“i switched from citrate to glycinate about 6 months ago and for me the difference was noticeable.”
4/5 Morning grogginessSide effects“For example, magnesium bisglycinate works wonders for my girlfriend's anxiety, whereas when I have it (and I've tried multiple times) I get an immense grogginess and depression the next day.”
4/5 Deeper sleep“You're not gonna feel anything like L-theanine, glycinate is so subtle I forgot I took it until I realized I slept through the night without waking up at 3am.”
4/5 Taste & form“But that plus my 2 daily magnesium Glycinate pills”
4/5 CalmingMorning grogginess“For me it was magnesium glycinate (400mg at night).”
5/5“I had the same reaction to mag glycinate, but mag acetyl-taurate has been life changing for me when it comes to sleep.”
4/5“My body hates magnesium glycinate and it absolutely keeps me awake.”
5/5“In taking Magnesium Glycinate for about 2 weeks now and my sleep improved significantly.”
4/5“I just recently bought magnesium glycinate, so you are saying L-threaonate gives you better”
4/5 Deeper sleep“Supplement-wise, magnesium glycinate helped my sleep quality, which indirectly improved energy and focus way more than most "energy" supplements.”
4/5 Falling asleep faster“One major caveat to this is recently, I started taking 400 mg of magnesium glycinate and my through the night sleep is way better, I still wake up sleepy but not as exhausted.”
2/5“ngl it did nothing for me personally, took glycinate for like 6 weeks and couldn't honestly tell a before/after difference.”
4/5“I take Magnesium Glycinate every night before bed and that helps.”
4/5“I started magnesium glycinate as I read it could help with sleep and anxiety.”
5/5 Mood“I'm not a woman but I had similar energy crash and mood swing from work stress, magnesium glycinate before sleep made huge difference for me”
2/5 MoodSide effects“I also have ADHD and also can't tolerate magnesium glycinate.”
2/5 Stopped working“Magnesium bisglycinate worked for the first 5 days then completely stopped working after that for me”
These are examples of Magnesium glycinate products sold on Amazon. They are not ranked by Reddit and the score above is for the ingredient, not a specific product. Check the label for dose and other ingredients.
Published studies (we list them so you can read the evidence yourself; inclusion is not an endorsement):
Across 1039 Reddit comments from people who say they have used it for sleep, 441 of 602 rated comments were positive and 121 negative, for a SnoozeVerdict score of 4.0/5. These are self-reported experiences, not clinical evidence.
90 of 602 rated owner comments (15%) describe an unwanted effect such as grogginess, headaches, vivid dreams or an upset stomach. Check the safety notes on this page and ask a doctor or pharmacist before starting.
Most rated owner comments come from people who struggle to fall asleep (64 comments, 51 positive).
No. The score summarizes Reddit owner comments only. Factual statements on this page link to NIH or PubMed sources, and nothing here is medical advice.
“Magnesium -- I started taking it for the muscle cramps after long runs and it turned out to help with general sleep quality too, which I wasn't expecting.”
What owners report →
“I had the same reaction to mag glycinate, but mag acetyl-taurate has been life changing for me when it comes to sleep.”
What owners report →
“Threonate helped with pre-sleep anxiety, i usually get very anxious when i lay down cause i know if i dont get a good nights sleep i'll feel like shit the next day.”
What owners report →Comparisons: Melatonin vs Magnesium glycinate · Magnesium glycinate vs Magnesium L-threonate (Magtein) · Magnesium glycinate vs Magnesium taurate · Magnesium glycinate vs Glycine · L-theanine vs Magnesium glycinate · Apigenin vs Magnesium glycinate · Tart cherry vs Magnesium glycinate
Last updated 2026-11-04. Mentions scanned: 2861 in 1617 threads.