Best Magnesium: The Buying Guide
Glycinate for sleep, what elemental milligrams mean, and why oxide is a laxative
Magnesium is the first sleep-stack purchase that usually deserves to stay. Glycinate (bisglycinate) is the default for evenings; citrate if you also want a stool softener; threonate if you are paying extra for a cognition story. This buying guide maps forms to Amazon SKUs.
Health Disclaimer
This content is for general informational and educational purposes only. It is not medical advice, diagnosis, or treatment. Consult a qualified healthcare provider before starting any supplement, peptide, or health protocol. Read our full health disclaimer.
Frequency
Evening, 30–60 min before bed
Duration
Ongoing
Level
Beginner
Key Takeaways
- 1Read elemental magnesium, not compound weight
- 2Glycinate 200–400mg elemental in the evening is the Huberman-adjacent default
- 3Oxide is poorly absorbed — skip for supplementation
- 4Thorne Magnesium Bisglycinate is our labeled Amazon pick
Who this is for
- ·People staring at 12 magnesium bottles
- ·Readers of the full magnesium guide who want a cart
- ·Anyone still taking oxide at bedtime
Pick a Form
Moderate EvidenceGlycinate: sleep and tolerance. Citrate: constipation. Threonate (Magtein): marketed for brain; pricier, thinner human data. Oxide: laxative, poor absorption.
Thorne Bisglycinate lists 55mg elemental per cap — 2–4 caps is a typical evening range. See the magnesium guide for deficiency context.
Stack After, Not Instead
Moderate EvidenceAdd glycine, theanine, and apigenin only after magnesium has had two weeks. Huberman sleep-stack buying guide has the order.
Safety
Moderate EvidenceKidney disease: medical supervision. Loose stool means you exceeded absorption — back off 100mg elemental.
As an Amazon Associate, Reo Tuku Iho Limited earns from qualifying purchases through Amazon links on this site. Full disclosure
For educational purposes only. Not medical advice. Read our health disclaimer.
Sources
Key references cited in this guide. Links open the original publication or abstract.
- Magnesium and sleep quality — reviewsJ Res Med Sci, 2012
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