2024
Sleep RCT
Studied for sleep.
A 2024 randomized controlled trial measured sleep using wearable trackers in healthy adults.
Sleep Medicine
BEST SELLER
Magnesium L-threonate.
A chelated, highly absorbable form.
2,000 mg per serving · 120 vegetarian capsules · 60 servings · 2-month supply
🌙 Nervous system support
🧠 Psychological function
🎯 Less tiredness & fatigue
🧘 Highly absorbable
Order today, get it by Saturday, Jun 6 · Free shipping
60 nights or your money back. Don't feel a difference? Email us before night 60. Every dollar back.
What's inside?
2,000 mg of pure magnesium L-threonate per serving (2 capsules). 60 servings per bottle = a 2-month supply. 120 vegetarian HPMC capsules. No fillers, no flow agents, no stearates.
No fillers, no flow agents, no stearates, no flavors, no fragrance. Vegan, gluten-free, gut-friendly.
How do I take it?
Two capsules, once a day, with water. Many take it in the evening, though daytime use is fine too.
One serving is 2,000 mg of magnesium L-threonate. There's no need to cycle off · many take it daily as part of a regular routine.
How long should I take it for?
Magnesium works best taken consistently, day after day, as part of a regular routine.
Give it time · many people take it daily over several weeks. There's no need to cycle off.
Featured in
Neuron
MIT News
Healthline
Forbes
The Atlantic
The research
One molecule. Years of research.
Peer-reviewed research into how the body absorbs and uses magnesium L-threonate.
2016
Human trial
Studied in adults.
A 12-week randomized study in healthy adults aged 50 to 70. Magnesium contributes to normal psychological function.
Peer-reviewed
45+
Publications
Well researched.
Magnesium L-threonate is among the most-studied magnesium forms, with peer-reviewed research from 2010 to 2024.
2010–2024
2010
MIT research
How it's absorbed.
An early preclinical study into magnesium L-threonate and how magnesium is absorbed and transported.
Neuron (MIT)
First voices
What the first ones say.
Adults 45 to 65, four to six weeks in. Verified buyers, no edits.
★★★★★
Verified
Part of my routine every night now.
Three weeks in and it's become a real part of my evening wind-down. Two capsules with water before bed. It's the first magnesium I've actually stuck with, and I like that it's a form that absorbs well.
M
★★★★★
Verified
The first one I've kept buying.
I've tried a few magnesiums over the years. This is the one that actually fit my routine · easy to take, gentle on my stomach, and I feel good knowing it's a well-absorbed form.
D
★★★★★
Verified
Two years on glycinate. Switched to this.
I'd taken glycinate for a while and wanted to try L-threonate instead. I take it in the evening with water · simple, no fuss, and it's become a habit I keep. Glad I made the switch.
S
Reviews from our 50-person beta cohort · public collection opens with first shipment
Building the habit
A simple daily routine.
Magnesium works best taken consistently. Here's what an easy routine looks like.
D1
Night 1
Day one
Two capsules with water.
Take it in the evening as part of your wind-down. Easy to fold in.
D7
Week 1
Week one
Part of the routine.
By the end of week one it's a habit · same time, every day.
D30
Month 1
Month one
Still going.
Magnesium works best taken day after day. There's no need to cycle off.
W12
Week 12
Week twelve
Studied over 12 weeks.
Clinical research on magnesium L-threonate has run over 12-week periods in healthy adults.
vs. what you've been taking
Same mineral. Different form.
Different forms of magnesium are absorbed differently. Here's how L-threonate compares on the questions people ask most.
| Spilak L-ThreonateL-Threonate | Magnesium GlycinateWhat most sleep-seekers take | MelatoninCommon sleep aid | |
|---|---|---|---|
| A form of magnesium | ✓ | ✓ | ✕ |
| Chelated form | ✓ | ✓ | ✕ |
| A mineral, not a hormone | ✓ | ✓ | ✕ |
| Non habit-forming | ✓ | ✓ | ✓ |
| Daytime use OK | ✓ | ✓ | ~ |
| Backed by human RCTs | ✓ | ~ | ✓ |
Sources: Liu 2016 · Hausenblas 2024 · Slutsky 2010 · published RCT & meta-analyses
The science · in three steps
How this form of magnesium works.
A chelated, highly absorbable form of magnesium. Here's how the body absorbs and uses it, in three steps.
01
How it's absorbed
Not all magnesium absorbs the same way.
Different forms of magnesium are absorbed differently. L-threonate is a chelated form studied for its absorption and bioavailability.
Slutsky et al. · Neuron · MIT · 2010
02
Magnesium and the nervous system
Your brain's nightly cleaning cycle.
During deep sleep, the brain runs a waste-clearance process called the glymphatic system. Magnesium contributes to the normal functioning of the nervous system and to normal psychological function.
Hausenblas et al. · Sleep Medicine · 2024 · randomized controlled trial
03
Well-studied
One of the most-studied magnesium forms.
Magnesium L-threonate has been the focus of ongoing peer-reviewed research into how the body absorbs and uses magnesium.
Peer-reviewed research · 2010–2024
Pure ingredients
One molecule. Nothing else.
No proprietary blend. No fillers. Just one molecule, dosed at 2,000 mg per serving.
What's in
The only ingredient that matters.
- 💊 2,000 mg pure magnesium L-threonate per serving · 60 servings · a chelated, highly absorbable form
- 🌱 Vegetarian HPMC capsule · vegan, no animal gelatin
- 🧪 Third-party tested · heavy metals, microbes, potency
60-night money-back
Don't feel a difference? Every dollar back.
What's NOT in
Everything we left out, on purpose.
- ❌ No magnesium stearate
- ❌ No silicon dioxide
- ❌ No artificial flavors
- ❌ No fillers, no flow agents
- ❌ No proprietary blend · you see every milligram
- ❌ Gentle on the stomach · a chelated form
Frequently asked
Questions, answered.
How is L-threonate different from other magnesium?
Magnesium comes in several forms that the body absorbs differently. L-threonate is a chelated form studied for its absorption and bioavailability (research since Slutsky, MIT 2010).
How long should I take it for?
Magnesium works best taken consistently, day after day, as part of a regular routine.
Give it time · many people take it daily over several weeks. There's no need to cycle off.
Is magnesium L-threonate well studied?
Yes · it has been examined in both preclinical and human research, including a 12-week randomized study in healthy adults aged 50 to 70. Magnesium contributes to normal psychological function.
How do I take it?
Two capsules, once a day, with water. One serving is 2,000 mg of magnesium L-threonate. Many take it in the evening, though daytime use is fine too.
Is it safe?
Yes. Magnesium L-threonate is generally well tolerated. Vegetarian capsules · vegan, gluten-free, no artificial fillers.
Not for use during pregnancy without doctor consultation. 60-night money-back guarantee on every order.
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Your nightly magnesium, made absorbable.
Two capsules before bed. 2,000 mg of magnesium L-threonate · a chelated, highly absorbable form that supports normal psychological function and helps reduce tiredness and fatigue.
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