Magnesium glycinate is the superior form and Simplr have used exactly that. My sleep quality has transformed — falling asleep faster, staying asleep, and waking up genuinely recovered. Essential supplement.
Sleep & Stress Support · Magnesium Glycinate
Magnesium
Magnesium
$35.19Subscribe & Save
Sale price
$35.19Subscribe & Save
Regular price
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$35.19Subscribe & Save
Sale price
$35.19Subscribe & Save
Regular price
10,000+
Already feeling it
4.9 / 5
Star Rating
FDA
Approved Facility
Zero
Fillers Added
Clinically
Dosed Formula
↑44%
Sleep quality
Magnesium · clinical trial
↓29%
Time to fall asleep
Magnesium · 8-week RCT
↓21%
Muscle cramp frequency
Magnesium · 6-week study
Our Magnesium Glycinate is engineered to support nervous system balance, sleep quality, and muscular relaxation at a foundational level.
Designed to promote deep recovery, it helps support the transition into restorative sleep stages and overall physiological recovery during the night.
At its core is Magnesium Glycinate, a highly bioavailable form of magnesium involved in neurotransmitter regulation, nervous system signalling, and muscle relaxation, supporting the body’s natural ability to downregulate in preparation for sleep.
This is associated with improved sleep architecture, including support for deep sleep processes such as slow-wave and REM sleep, where physical and neurological recovery is most active.
Beyond sleep, magnesium plays a key role in muscle function, nerve transmission, and cellular energy production, making it an essential mineral for daily physiological performance and stress regulation.
Our Magnesium Glycinate is designed for daily use to support recovery, sleep quality, and overall nervous system function.
The Science
Evidence-Based Formulation
Every ingredient in Magnesium is based on peer-reviewed clinical research — magnesium bisglycinate at a therapeutic dose, the most bioavailable and gentle form for sleep, stress and muscle recovery.
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Magnesium Supplementation and Subjective Anxiety and Stress
“A systematic review found evidence that magnesium supplementation reduces subjective anxiety in individuals with mild-to-moderate anxiety, particularly in those with lower magnesium status. The evidence indicated magnesium modulates the HPA axis, regulates cortisol release, an...”
View study -
Oral Magnesium Supplementation for Insomnia in Older Adults: A Systematic Review and Meta-Analysis
“A meta-analysis of three randomised controlled trials (151 older adults) found that magnesium supplementation reduced time to fall asleep by approximately 17 minutes compared to placebo (95% CI -27.27 to -7.44; p=0.0006). Total sleep time also improved by approximately 16 minu...”
View study -
Magnesium Intake and Bone Mineral Density
“Analysis of population-level data found that dietary magnesium intake was positively and significantly associated with bone mineral density at multiple skeletal sites in both men and women. Individuals in the highest quartile of magnesium intake showed meaningfully greater bon...”
View study -
Magnesium's Role in Neuromuscular and Metabolic Function
“A comprehensive review established that magnesium serves as a cofactor for over 300 enzymatic reactions, with critical roles in ATP synthesis, muscle contraction, nerve transmission, and glucose metabolism. Magnesium deficiency was associated with impaired neuromuscular functi...”
View study -
Magnesium Supplementation and Blood Pressure Reduction: A Systematic Review and Meta-Analysis
“A meta-analysis of 38 randomised controlled trials (2,709 participants) found that magnesium supplementation reduced systolic blood pressure by 2.81 mmHg (p<0.05) and diastolic blood pressure by 2.05 mmHg (p<0.05) overall. Greater reductions were observed in hypertensive indiv...”
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The Effect of Magnesium Supplementation on Primary Insomnia in the Elderly: A Double-Blind Placebo-Controlled Clinical Trial
“An 8-week randomised, double-blind, placebo-controlled trial of 500 mg magnesium supplementation in elderly adults with insomnia found significant improvements in sleep duration (p=0.002), sleep efficiency (p=0.03), time to fall asleep (p=0.02), and Insomnia Severity Index sco...”
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Benefits
- Improves sleep quality and reduces time to fall asleep
- Reduces subjective stress and anxiety levels
- Supports muscle relaxation and reduces cramp frequency
- Contributes to healthy bone mineral density
- Supports energy production and cellular metabolic function
Why our Magnesium
Most magnesium supplements use magnesium oxide — the cheapest form available, with elemental absorption rates as low as 4% in clinical comparisons, meaning the vast majority of what you swallow is excreted unchanged. It's also the form most responsible for the osmotic laxative effect that gives magnesium its reputation for GI side effects. Ours uses magnesium bisglycinate — a chelated form in which magnesium is bound to the amino acid glycine, improving intestinal absorption, bypassing the osmotic mechanism responsible for GI discomfort, and leveraging glycine's own GABAergic calming activity for additional sleep and stress support.
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Description
Our Magnesium Glycinate is engineered to support nervous system balance, sleep quality, and muscular relaxation at a foundational level.
Designed to promote deep recovery, it helps support the transition into restorative sleep stages and overall physiological recovery during the night.
At its core is Magnesium Glycinate, a highly bioavailable form of magnesium involved in neurotransmitter regulation, nervous system signalling, and muscle relaxation, supporting the body’s natural ability to downregulate in preparation for sleep.
This is associated with improved sleep architecture, including support for deep sleep processes such as slow-wave and REM sleep, where physical and neurological recovery is most active.
Beyond sleep, magnesium plays a key role in muscle function, nerve transmission, and cellular energy production, making it an essential mineral for daily physiological performance and stress regulation.
Our Magnesium Glycinate is designed for daily use to support recovery, sleep quality, and overall nervous system function.
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Ingredients
Ingredients: Magnesium (from 2,500mg Magnesium Glycinate) 275mg, Hypromellose (capsule), Magnesium Stearate, Silicon Dioxide, Rice Flour.
Manufacturer Country: USA
Amount: 90 capsules
Gross Weight: 4oz / 0.25lb / 113g
Caution: Do not exceed recommended dose. Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition should consult a physician before using this or any dietary supplement.
Warning: Keep out of reach of children. Do not use if the safety seal is damaged or missing. Store in a cool, dry place.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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Nutrition
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How to Take
Take 3 capsules daily in the evening, 30–60 minutes before bed.
Evening dosing aligns with the body's natural wind-down phase when magnesium's muscle-relaxing and sleep-supporting effects are most beneficial. If preferred, split the dose — 2 capsules in the evening and 1 with dinner. Benefits for sleep quality, muscle relaxation and overnight recovery are often noticeable within the first 1–2 weeks of consistent use.
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Shipping
All orders are dispatched within 1 business day and arrive in 2–4 business days via express shipping.
Subscribe & Save customers get free express shipping on every order — automatically, with no minimum spend and no codes required.
One-time orders are charged a flat express shipping rate at checkout.
The Experience
What you'll feel
- Deeper more restful sleep
- Reduced muscle cramps
- Calmer nervous system
- Less next-day fatigue
- Improved overnight recovery
Your routine
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Verified Customer Reviews
What our customers say.
I was sceptical that magnesium alone could make such a difference but the glycinate form really does work. Deeper sleep, less muscle tension, and calmer overall. Brilliant — nothing like the cheap oxide forms.
This alongside Sleep I on bad nights is an incredible combination. But even on its own the magnesium has made a huge difference to my recovery and how rested I feel. Take it every single night now.
The difference in sleep quality since switching to magnesium glycinate is remarkable. I fall asleep faster, stay asleep and wake up genuinely rested. The glycinate form is so much gentler than magnesium oxide.
My muscle cramps at night have basically stopped since starting this. The relaxation effect is real and noticeable — I fall asleep more easily and sleep much more deeply.
I've tried magnesium oxide and citrate before but glycinate is in a different league. No digestive discomfort and the sleep improvement is dramatically better. Don't take any other form.
Stress and sleep were both a problem for me. This has helped significantly with both. Something about the calming effect in the evening just works — it's become my favourite supplement.
400mg elemental magnesium at the therapeutic dose in the proper glycinate form. This is what magnesium supplementation should look like. Simple, clean and highly effective.
I train hard and the muscle recovery benefits alongside the sleep improvement have been really significant. Sleep is deeper, I'm less sore the next day. A daily staple now.
Anxious days feel more manageable and evenings are calmer since starting this. The nervous system calming effect of magnesium is real. Really happy I found this formula.