Magnesium glycinate and sleep

What 2 graded rows on magnesium glycinate agree on for sleep, and where they differ. Counted side by side, never averaged.

Consensus finder Rows from the Magnesium glycinate page, reviewed Oct 21, 2026 How it decides

What the rows agree on

Each block and row is one graded row from the Magnesium glycinate page, with its PubMed record.

Supplement

Magnesium glycinate Choose another

2 rows · 306 people

They agree: both rows found an improvement.

No difference

Improved

Each block is one evidence row, sized by how many people it enrolled, with its grade inside.

From the rows

The best-graded row, grade C, is a randomized trial of 155 people (2025) and found an improvement.

The rows run from 151 to 155 people, published from 2021 to 2025: 1 pooled review and 1 single study.

2 improved

Grade CInsomnia severity · Improved
RCT · n 155 · 2025 · Healthy adults aged 18–65 reporting poor sleep quality
250 mg/day elemental magnesium · 4 weeks (primary analysis)
Insomnia Severity Index fell 3.9 points versus 2.3 with placebo (p = 0.049); a small effect (Cohen's d = 0.2). No differences in other psychological outcomes.
Row on the Magnesium glycinate page · PubMed 40918053 (opens PubMed)
Grade CTime to fall asleep (older adults) · Improved
Meta-analysis, 3 studies · n 151 · 2021 · 3 RCTs in older adults with insomnia
Varied by trial · Varied by trial
Sleep onset latency 17.4 minutes shorter than placebo; low to very low quality evidence.
Row on the Magnesium glycinate page · PubMed 33865376 (opens PubMed)