Best Magnesium for Sleep: Bisglycinate vs Glycinate vs L-Threonate
Best magnesium supplements for sleep: Thorne Magnesium Bisglycinate vs NOW Albion Magnesium Glycinate on Amazon — elemental dosing, GI comfort, and L-threonate comparison.
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 Bisglycinate is the NSF pick; NOW glycinate is the cheaper Amazon bottle — 100 mg elemental per tablet
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, and it is the NSF-for-Sport default. NOW glycinate is the cheaper Amazon alternative: 100 mg elemental per tablet, so the labeled serving of 2 tablets is 200 mg. 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
Continue Reading
SupplementsMagnesium Glycinate vs Threonate vs Citrate: Dose and Timing
Up to 50% of adults may not meet optimal magnesium intake. It's involved in 300+ enzymatic reactions, sleep, muscle recovery, stress, and heart rhythm all depend on it. This guide breaks down which form to take, when, and how much.
Read guide
Sleep OptimizationHuberman Sleep Stack: Exact Apigenin, Magnesium & Theanine Doses
Andrew Huberman’s evening stack — magnesium, L-theanine, and apigenin, often with glycine — is the most copied supplement protocol on the internet. Evidence is strongest for magnesium and glycine, thinner for apigenin. This buying guide ranks what to purchase, in what order, and links Amazon-available SKUs we already review.
Read guideSleep OptimizationGlycine for Sleep: 3 g Before Bed and Why It Cools You Down
Glycine is an amino acid with direct sleep-promoting effects: it lowers core body temperature and improves sleep quality in human trials. At 3g before bed, it's one of the most evidence-backed, affordable sleep supplements. This guide covers mechanism, dosing, and how it fits the Huberman stack.
Read guide
SupplementsBest Creatine Monohydrate: 5 g Daily and Why Gummies Fall Short
Creatine monohydrate is the rare supplement with decades of human data for strength, and growing interest in cognition and healthy aging. You do not need hydrochloride, buffered, or a $60 tub. This buying guide picks a tested monohydrate and tells you what to ignore.
Read guide
Sleep OptimizationHuberman Sleep Protocol: Temperature, Light, and Supplements
Sleep is the foundation every biohacker builds on, Huberman calls it the #1 performance enhancer. This guide covers the science of sleep stages, temperature regulation, light protocols, tracking with wearables, and the complete toolkit for deep restorative sleep.
Read guideLast updated: 2026-09-21 · For informational purposes only. Not medical advice. Consult a healthcare provider before starting any new health protocol. Health disclaimer.