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 · dosage and timing

Magnesium glycinate Dosage and Timing: What Owners Report

In 117 Reddit owner comments that give an amount, the typical Magnesium glycinate dose was 240 mg (middle half: 200 to 400 mg). The timing people mention most is at night or before bed (349 comments). These numbers describe what people with sleep problems say they take on Reddit (May 2026 to October 2026); they are not dosing advice. Follow the label and ask a doctor or pharmacist, especially if you take medicines.

Amounts owners mention

Unit	Comments	Typical (median)	Middle half	Most-mentioned amounts
mg	117	240	200 to 400	200 (34), 400 (22), 300 (11)
capsules or tablets	11	1	1 to 2	2 (4), 1 (4), 0.5 (2)

Counted from amounts written next to the name Magnesium glycinate in 128 owner comments (a comment can give more than one amount). Products differ in strength, so a number of capsules or scoops is not comparable between brands. Most-mentioned: 200 mg (34), 400 mg (22), 300 mg (11).

What studies and NIH sources say

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]}

When people take it

Timing mentioned	Owner comments
At night or before bed	349
In the morning	57
With or after food	11

Phrases such as "before bed", "in the morning" or "with food" near the name Magnesium glycinate.

How long it takes, according to owners

Timeframe mentioned	Comments	Positive	Negative
Minutes to hours	3	0	1
Within the first week	12	3	4
1 to 4 weeks	19	10	4
More than a month	1	1	0

35 owner comments mention a timeframe such as "after 2 weeks", "within an hour" or "it took a month". A timeframe can describe when someone noticed a change or how long they tried it before giving up, so read it as a rough signal.

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

4/5 CalmingMorning grogginess
“For me it was magnesium glycinate (400mg at night).”

owner comment via r/Supplements · 2026-06-02 · 10 upvotes

4/5 Deeper sleep
“magnesium glycinate honestly. slept better within a few days and i had no idea how deficient i probably was until i tried it.”

owner comment via r/Supplements · 2026-05-10 · 7 upvotes

In their words

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

4/5 Deeper sleep
“and i started taking magnesium before bed, the glycinate kind, it helped with the body aches and sleep quality”

owner comment via r/Supplements · 2026-08-14 · 20 upvotes

4/5 Taste & form
“Magnesium glycinate is great for heart nerve and bone health.”

owner comment via r/Anxiety · 2026-09-03 · 18 upvotes

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
“Magnesium glycinate before bed and getting aggressive about protein intake first thing in the morning helped me more than any supplement stack I tried.”

owner comment via r/Nootropics · 2026-10-12 · 14 upvotes

4/5
“A few years ago I started taking magnesium glycinate at night and I was in pure bliss for about 6 weeks.”

owner comment via r/Supplements · 2026-10-10 · 14 upvotes

Magnesium glycinate overall: 4.0 from 1039 owner comments.

Frequently asked

How much Magnesium glycinate do people take?

In 117 Reddit owner comments that give an amount, the typical Magnesium glycinate dose was 240 mg (middle half: 200 to 400 mg). That is what people report, not a recommended dose; follow the product label and your doctor's advice.

When do people take Magnesium glycinate?

The timing people mention most is at night or before bed (349 comments). In the morning: 57; With or after food: 11.

How long does Magnesium glycinate take to work?

35 owner comments mention a timeframe near Magnesium glycinate (for example "after two weeks" or "within an hour"). Minutes to hours: 3; Within the first week: 12; 1 to 4 weeks: 19; More than a month: 1. Individual experiences vary widely.