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.

Question · Falling asleep

Does magnesium glycinate help you fall asleep?

Many say yes, going by Reddit owner reports: 51 of 64 rated comments from people who struggle to fall asleep describe a good experience with Magnesium glycinate, and 7 describe a poor one. That is self-reported experience, not proof that it works, and results vary from person to person.

Magnesium glycinate, Falling asleep	Owner comments
Rated comments in this context	64
Positive	51 (80%)
Negative	7 (11%)
Describe an unwanted effect	8
Context rating (small samples pulled to the average)	3.7

Magnesium glycinate overall: 4.0 from 1039 owner comments in Reddit sleep, insomnia and supplement communities, May 2026 to October 2026.

What the research says

Magnesium is an essential mineral; supplements come in many forms (glycinate, citrate, oxide and others) that differ in how much magnesium they deliver and how they are absorbed.^{[NIH Office of Dietary Supplements]}
A 2021 meta-analysis of trials in older adults found the evidence on oral magnesium for insomnia was low quality.^[PubMed]

Safety

The NIH upper limit for magnesium from supplements is 350 mg a day for adults unless a doctor advises more; higher doses commonly cause diarrhea, and people with kidney disease are at higher risk of magnesium build-up.^{[NIH Office of Dietary Supplements]}
Magnesium can reduce absorption of some antibiotics and osteoporosis drugs, so doses are usually spaced apart.^{[NIH Office of Dietary Supplements]}

Good experiences

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.”

owner comment via r/sleep · 2026-05-24 · 15 upvotes

4/5 Falling asleep faster
“magnesium glycinate knocks me out better than anything else i've tried, take it about an hour before bed with some l-theanine if you're really wired”

owner comment via r/Nootropics · 2026-08-27 · 7 upvotes

4/5 Deeper sleepFalling asleep faster
“I take the mag threonate because mag glycinate before sleep makes me very anxious and then I can't fall asleep or stay in a deep sleep.”

owner comment via r/Supplements · 2026-05-12 · 6 upvotes

Poor experiences

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.”

owner comment via r/Supplements · 2026-08-13 · 35 upvotes

2/5
“ngl it did nothing for me personally, took glycinate for like 6 weeks and couldn't honestly tell a before/after difference.”

owner comment via r/sleep · 2026-07-26 · 9 upvotes

How reports compare in other contexts

Context	Rated comments	Positive	Negative
Morning grogginess	55	25	24
Staying asleep	49	36	11
Deep sleep	44	36	3
Anxiety at night	22	13	7
Vivid dreams	17	9	7

More on Magnesium glycinate

Talk to a doctor about new, severe or lasting symptoms, and to a pharmacist before combining supplements with medicines.