NOW Magnesium Glycinate Review

NOW Foods Supplements offers Magnesium Glycinate 100 mg in a highly absorbable tablet form, designed to support essential bodily functions. This particular magnesium formulation utilizes magnesium bound to the amino acid glycine, a characteristic that significantly enhances its intestinal absorption. Magnesium is recognized as a vital mineral, playing a critical role in numerous physiological processes. It is fundamental for efficient energy production and overall metabolism, contributing to the body's ability to convert food into energy. Beyond energy, magnesium is crucial for proper muscle contraction, ensuring smooth and coordinated movements, and for effective nerve impulse transmission, which is vital for communication throughout the nervous system. Furthermore, it is indispensable for robust bone mineralization, contributing to bone density and strength. This mineral acts as a required cofactor for an estimated 300 enzymes within the body, highlighting its widespread importance in biochemical reactions. Processes such as fat and protein production, along with glucose metabolism, are dependent on adequate magnesium levels. The product also emphasizes magnesium's role in regulating calcium balance, primarily through its influence on the parathyroid gland, which is key for maintaining healthy bone and mineral homeostasis. NOW Foods ensures the quality of this supplement through its GMP Quality Assured certification, an A-rated, third-party verification that scrutinizes every aspect of the manufacturing process. The company's in-house laboratories are ISO/IEC accredited, conducting rigorous testing for stability, potency, and product formulation. Established in 1968 by Elwood Richard, NOW Foods stands as one of the largest independent, family- and employee-owned manufacturers dedicated to natural products. The Magnesium Glycinate tablets are unflavored, suitable for adults, and adhere to various dietary needs, being Halal, Vegan, and Vegetarian. They are also free from common allergens such as dairy, egg, soy, nuts, and are non-GMO. Each tablet contains 100 mg of magnesium, with a suggested usage of 2 tablets, 1 to 2 times daily with food, providing 200 mg to 400 mg of elemental magnesium per day from 2,000 mg Magnesium Bisglycinate. The product comes in a 180-count bottle, made from 100% PCR (post-consumer recycled) resin, reflecting a commitment to sustainability. Natural color variation may occur in the product, which is a normal characteristic. This supplement is designed to promote overall nervous system health and general well-being.

Product Focus: Blood SugarAlso graded for:Blood Sugar · T2Also covers:HormonesMetabolismHeart
Tier ⓘ
Tier 2 · Rank 14
Tier 2 · Researched. Human studies show improvement in an aging-related function or a specific goal, and the reviews agree. Rank 14 within Tier 2 for Blood Sugar; 14 of 82 overall. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
82 /100
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
99% of 45,513
Biohacker Mentions
6 of 10
Cost per month
$4

Study, Trial or Testing Result Summary

Members Only53 human studies · 26 improved

6 of these 53 human studies gave magnesium by drip, not by mouth.

53 human studies26 improved18 no effect989,314 people studied

This product gives 200 mg of magnesium a day as magnesium bisglycinate, which is close to the 250 mg daily dose that worked in one trial, so it counts as a full dose. A 2021 pooled analysis of double-blind trials found oral magnesium lowered fasting blood sugar more than placebo in people with diabetes, and improved blood sugar and insulin sensitivity in people at high risk of diabetes [1]. A 2024 pooled analysis of five trials in 266 women with pregnancy diabetes found lower fasting blood sugar and insulin resistance [2]. In 24 adults with metabolic syndrome, 400 mg of magnesium citrate daily for 12 weeks lowered long-term average blood sugar and blood pressure [3]. In 40 women with polycystic ovary syndrome, 250 mg of magnesium oxide daily for 2 months lowered fasting insulin, insulin resistance and fasting blood sugar [4]. Not every trial agreed. 400 mg of magnesium oxide in 59 adults did not change blood sugar [5]. A 12-week trial of 360 mg of magnesium glycinate with vitamin D in 78 overweight adults, the same form used here, also found no change in blood sugar or insulin [6]. Benefits showed up mostly in people who already had diabetes or were at high risk. Animal and cell studies are never counted.

See all 53 studies →Hide the studies

Review Totals and Summary

Members Only45,513 reviews · 99% positive
45,513 reviews · IHerb 36,621 · Amazon 8,848 · PureFormulas 18 · Healf 14 · NOW Foods 10 · NHC 2
99% positive0% neutral1% negative

"NOW Magnesium Glycinate" generally receives very positive feedback, with about 45,513 ratings across various stores. An impressive 80% of star ratings are 4 or 5 stars, indicating high customer satisfaction. **What it does for buyers** Many customers report significant benefits from taking this magnesium supplement. A primary theme is improved sleep quality, with users stating, "IT REALLY HELPS ME TO SLEEP WITH THIS PRODUCT" and describing it as a "great sleep aid." Some also note enhanced mental well-being, reporting they "feel more sharp and mental clarity" and are "happier now." Beyond sleep, the product is valued for supporting muscular health, with one user noting, "It works really well for me" for muscular issues. The brand itself is often praised for "purity of product that therefore are effective." **Complaints** While the product itself is highly regarded, some negative experiences revolve around delivery issues rather than the supplement's effectiveness. Several customers expressed frustration, with comments like, "The order did not arrive" and "never received it." Another complaint mentioned a specific vendor, "Daily Vita did not help with a lost order." In terms of product reaction, a small number of individuals experienced a paradoxical effect, such as insomnia, highlighting that "your mileage will vary!" **Form and Experience** The product is available in capsule form, with one reviewer mentioning taking "4 capsules go reach 400 mg." There are no specific comments in the reviews regarding the taste, smell, or size of the pills, suggesting these aspects are generally not a significant concern for buyers. **Value for Money** Customers generally perceive the product as offering good value. Some appreciate finding it "at a better price" from certain retailers. The balance between the quality of the supplement and the quantity provided is also seen as positive, with one review stating, "Quality vs quantity is good." **Who it suits and who it did not** This supplement appears to be particularly well-suited for individuals seeking to improve their sleep quality or support muscular health. Many consider it an "essential supplement to take before sleep." However, it may not be for everyone, as some individuals, like one reviewer's mother, experience increased sleep quality, while others "experienced insomnia when I tried it." As with many supplements, individual reactions can differ significantly.

Biohacker Summary

Members Only6 of 10 recommend it
6 of 10 biohackers on our panel recommend it

Most of the panel recommends or uses magnesium, with sleep the most common reason, and several also point to blood pressure, bone health, brain function and fixing low levels. Three of them take 400 mg of the threonate form before bed, two others name glycinate as a calming sleep choice, and one suggests threonate and similar forms over cheaper ones, while one warns that the oxide form absorbs poorly. Others suggest 300 to 600 mg a day as a general need, one recommends taking it with vitamin D, and some use it in evening stacks or electrolyte drinks. The cautions are that one panelist says labels can overstate how much real magnesium is in a dose, and another says evidence that it reliably improves sleep is mixed, with several studies finding no clear effect. No one on the panel said they stopped taking it.

See all 10 biohackers →Hide the biohackers
  • Dr. Rhonda Patrick · Magnesium · recommends
    • 8 Nov 2026 · recommends · Instagram ↗
      Explains that magnesium helps the body activate and metabolize vitamin D, and that magnesium intake has been associated with lower odds of vitamin D deficiency and insufficiency.
    • 6 Nov 2026 · neutral · Instagram ↗
      Mentions that getting too little magnesium may play a role in declining testosterone levels.
    • 3 Nov 2026 · recommends · X ↗
      Recommends getting enough magnesium, around 300–400 mg daily from diet and supplements, as it is an essential cofactor for vitamin D metabolism. Magnesium glycinate is a good form.
    • 1 Nov 2026 · neutral · YouTube ↗
      Mentions magnesium as one of the micronutrients found in multivitamins that people often don't get enough of from their diets.
    • 31 Oct 2026 · neutral · YouTube ↗
      Explains that magnesium helps control blood pressure by boosting the production of substances that relax blood vessels and improve cardiovascular health, citing a meta-analysis that found magnesium supplementation at an average dose of 368 mg per day notably lowers both systolic and diastolic blood pressure.
    • 29 Oct 2026 · neutral · Facebook ↗
      Magnesium supplementation has lowered blood pressure in randomized controlled trials. An analysis of 34 trials involving over 2,000 participants found modest reductions in both systolic and diastolic pressure, with a median dose of 368 mg/day.
    • 16 Oct 2026 · warns · Facebook ↗
      Warns that some magnesium supplements make the dose look much larger than it really is and that labels can fool people.
    • 29 Sep 2026 · recommends · YouTube ↗
      Mentions magnesium as an important nutrient component for testosterone.
    • 28 Sep 2026 · warns · YouTube ↗
      Warns that some supplement companies mislead consumers by listing the total compound weight of magnesium citrate as the elemental magnesium dose, when the actual elemental magnesium content is much lower, potentially around 44-66 milligrams.
    • 2 Sep 2026 · neutral · Facebook ↗
      States there is not yet strong, consistent evidence that magnesium supplementation reliably improves sleep, noting that while some meta-analyses suggest it can improve sleep quality scores, sleep efficiency, and sleep duration, individual studies are inconsistent and several have found no meaningful effect.
  • Dr. Eric Berg · Magnesium · recommends
    • 7 Nov 2026 · recommends · Facebook ↗
      Recommends Magnesium glycinate, noting its high absorption rate compared to magnesium oxide, and its support for energy, sleep, muscle relaxation, and vitamin D function.
    • 7 Nov 2026 · neutral · Instagram ↗
      Dr. Berg states that when nutrients like magnesium are too low, fatigue and weakness can follow.
    • 6 Nov 2026 · recommends · Podcast ↗
      Recommends focusing on magnesium to support stronger bones if a neck hump is associated with osteoporosis.
    • 6 Nov 2026 · neutral · Instagram ↗
      Explains that leg and calf cramps are most often caused by low magnesium, with leafy greens being a top source.
    • 6 Nov 2026 · recommends · YouTube ↗
      States that magnesium is a cofactor that allows B1 to work more efficiently.
    • 4 Nov 2026 · recommends · YouTube ↗
      States that magnesium is the most important mineral for energy production, as one cannot make energy without it.
    • 1 Nov 2026 · neutral · YouTube ↗
      Magnesium is involved in 300 to 600 enzyme reactions, acts as a biological brake pedal, is the master controller over calcium, and is involved in making ATP, the energy currency of the body. It takes energy to go to sleep, and magnesium is required for relaxation and good sleep. Magnesium also helps balance cortisol levels and calm you.
    • 30 Oct 2026 · neutral · Instagram ↗
      Dr. Eric Berg states that magnesium supports energy, muscle function, and sleep, and that most of it is stored inside cells, making deficiencies harder to detect with a standard blood test.
    • 28 Oct 2026 · neutral · YouTube ↗
      Notes that magnesium could also be a factor in preventing muscle cramps.
    • 25 Oct 2026 · recommends · YouTube ↗
      Recommends magnesium, specifically magnesium glycinate, stating it is key for D3 and K2 to work and is probably more important than calcium for building bone.
  • Thomas DeLauer · Magnesium · recommends
    • 5 Nov 2026 · recommends · YouTube ↗
      Recommends taking magnesium glycinate and threonate at night to act as a brake on the nervous system, block excitatory signaling, help wind down, and support serotonin and melatonin production for better sleep.
    • 4 Nov 2026 · neutral · YouTube ↗
      Mentions that magnesium glycinate also helps a lot with sleep.
    • 2 Nov 2026 · neutral · YouTube ↗
      Mentions that restless leg syndrome is often treated with magnesium, but states that the sensation is actually coming from three other issues.
    • 28 Oct 2026 · uses · YouTube ↗
      Uses Element's cans which contain 30 milligram magnesium, finding that electrolytes help his workout performance.
    • 24 Oct 2026 · uses · YouTube ↗
      Uses Element's 30 mg magnesium cans first thing in the morning to prime his day and help with workout performance.
    • 23 Oct 2026 · recommends · YouTube ↗
      Recommends magnesium around the time one would normally break a fast to calm the brain and dull feelings of conditioned hunger.
    • 8 Oct 2026 · recommends · Facebook ↗
      Recommends magnesium, noting it is a cofactor for enzymes that build neurotransmitters, and deficiency can affect mood, happiness, and motivation.
    • 6 Oct 2026 · neutral · YouTube ↗
      Notes that modern agricultural practices have led to soils depleted of trace minerals like magnesium, resulting in widespread magnesium deficiency.
    • 1 Oct 2026 · recommends · YouTube ↗
      Recommends taking some magnesium glycinate tonight to help calm down and sleep.
    • 25 Sep 2026 · neutral · Facebook ↗
      Mentions that magnesium in pumpkin seeds relaxes bronchial smooth muscle.
  • Andrew Huberman · Magnesium · recommends
    • 4 Nov 2026 · recommends · Instagram ↗
      Notes that Les Spellman's team includes 'Magnesium timed right' as part of their game plan to optimize recovery in unfavorable conditions.
    • 22 Oct 2026 · neutral · Podcast ↗
      Discusses Magnesium Threonate as a tool for falling asleep.
    • 7 Aug 2026 · uses · X ↗
      Takes 400 mg of Magnesium Threonate before bed for sleep.
    • 27 Jul 2026 · uses · YouTube ↗
      Uses Element, an electrolyte drink with sodium, magnesium, and potassium in correct ratios and no sugar, to ensure adequate hydration and electrolytes, especially when starting days fast or during physical exercise.
    • 20 Jul 2026 · uses · X ↗
      Takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 20 Jul 2026 · recommends · YouTube ↗
      Confirms that magnesium is absolutely important for cognitive function, noting studies show those with lower magnesium intakes tend to perform less well on cognitive function tests, and it's related to brain changes over time and dementia risk.
    • 13 Jul 2026 · uses · X ↗
      Takes 400 mg of Double Wood Magnesium L-Threonate before bed for sleep.
    • 12 Jul 2026 · uses · X ↗
      He takes 400 mg of Magnesium L-Threonate from Double Wood before bed for sleep.
    • 6 Jul 2026 · uses · X ↗
      Takes 400 mg of Double Wood Magnesium L-Threonate before bed for sleep.
    • 22 Jun 2026 · uses · X ↗
      Takes 400 mg of magnesium L-threonate before bed for sleep.
  • Dr. Mark Hyman · Magnesium · recommends
    • 4 Nov 2026 · recommends · YouTube ↗
      Recommends magnesium breakthrough advanced ten from Biooptimizers, which is their most complete magnesium formula with 10 bioavailable forms and 550 milligrams of elemental magnesium, designed to support restful restorative sleep, muscle recovery, stress resilience, and metabolic health.
    • 1 Nov 2026 · uses · Facebook ↗
      Recommends considering magnesium glycinate before bed for nervous system support, deeper sleep quality, and to help the body transition into rest, and states that they take it every night.
    • 29 Oct 2026 · neutral · YouTube ↗
      Explains that a lack of magnesium can cause muscles and nerves to malfunction, resulting in muscle weakness, twitching, and cramps.
    • 21 Oct 2026 · recommends · YouTube ↗
      Recommends Magnesium Breakthrough Advanced 10 from Bioptimizers for restful sleep, muscle recovery, stress resilience, and metabolic health, especially during stressful times of the year.
    • 14 Oct 2026 · recommends · TikTok ↗
      Recommends magnesium because it is involved in over 600 reactions in the body and up to 80% of people may have low levels that never get flagged on a standard blood test.
    • 12 Oct 2026 · recommends · YouTube ↗
      Recommends magnesium as a basic supplement during detoxification to support pathways, help with constipation, and provide electrolytes.
    • 7 Oct 2026 · recommends · YouTube ↗
      Recommends Magnesium Breakthrough Advanced 10 from Biooptimizers, which contains 10 bioavailable forms and 550 mg of elemental magnesium, to support restful sleep, restorative sleep, muscle recovery, stress resilience, and metabolic health.
    • 30 Sep 2026 · uses · YouTube ↗
      Has recommended magnesium breakthrough from bioptimizers for years and now uses Magnesium Breakthrough Advanced 10 as part of his evening routine, especially during periods of travel, training, and higher stress, to support sleep, muscle recovery, and metabolic health.
    • 22 Sep 2026 · recommends · Instagram ↗
      Recommends correcting nutrient deficiencies with magnesium.
    • 16 Sep 2026 · recommends · YouTube ↗
      Recommends Magnesium Breakthrough Advance 10 from BiOptimizers, which has 10 bioavailable forms of magnesium and more elemental magnesium, as part of his evening routine for sleep, muscle recovery, and metabolic health.
  • Dave Asprey · Magnesium · uses
    • 3 Nov 2026 · uses · Instagram ↗
      Looks at magnesium alongside protein to keep muscle for the long run.
    • 3 Nov 2026 · recommends · YouTube ↗
      Suggests adding magnesium to help keep potassium in the system longer, as they work hand in hand.
    • 31 Oct 2026 · neutral · YouTube ↗
      Mentions magnesium in the context of sleep but states that it doesn't address the core issue of waking up during the night.
    • 25 Oct 2026 · recommends · Podcast ↗
      Suggests that magnesium may help slow aging, support cellular repair, and improve sleep.
    • 17 Oct 2026 · neutral · Facebook ↗
      States that magnesium can affect how the body responds to a supplement.
    • 27 Sep 2026 · recommends · Podcast ↗
      Recommends fixing sleep with 300mg of Magnesium 101 before bed if diet and exercise aren't melting stubborn belly fat.
    • 7 Sep 2026 · uses · Instagram ↗
      Dave Asprey says his daily routine includes magnesium as part of a carefully developed combination for longevity.
    • 5 Sep 2026 · recommends · YouTube ↗
      Recommends magnesium glycinate for sleep, stating that trials show it helps people fall asleep about 17 minutes faster and that he finds it incredibly effective.
    • 3 Sep 2026 · recommends · YouTube ↗
      Mentions magnesium glycinate as one of the five gut-friendly, extensively researched ingredients in Kill Switch that helps with natural sleep.
    • 29 Aug 2026 · recommends · YouTube ↗
      Dave Asprey recommends Magnesium Glycinate for sleep, noting human studies show it helps people fall asleep faster, is safe, and works on a fundamental aspect of health, unlike magnesium oxide which acts as a laxative.
  • Ben Greenfield · Magnesium · uses
    • 29 Oct 2026 · uses · YouTube ↗
      Uses magnesium during surgery because it is neuroprotective.
    • 22 Oct 2026 · uses · YouTube ↗
      Says he is drinking LMNT, which contains sodium, potassium, and magnesium, and states that he actually drinks this stuff.
    • 15 Oct 2026 · recommends · Podcast ↗
      Mentions magnesium as part of a bare-minimum protocol.
    • 15 Oct 2026 · recommends · YouTube ↗
      Advises getting red blood cell magnesium levels to the high end of the range as a minimum step for overall health and to slow down heart disease.
    • 3 Sep 2026 · recommends · YouTube ↗
      Recommends supplementing with magnesium threonate if one is low in magnesium, as it crosses the blood-brain barrier and is demonstrated to increase hippocampus plasticity, theoretically making one smarter and improving memories.
    • 25 Aug 2026 · uses · Facebook ↗
      Uses Magnesium Breakthrough from BIOptimizers as part of their daily stack, taking four capsules in the evening to support relaxation, recovery, and a good night of sleep.
    • 17 Aug 2026 · recommends · Facebook ↗
      Recommends Celtic Sea Salt's new electrolyte drink "Hydrate" for replacing electrolytes and trace minerals lost through sweat, noting it contains 70 naturally occurring trace minerals, plus magnesium, taurine, and potassium.
    • 15 Aug 2026 · warns · YouTube ↗
      Had heart palpitations when he was really overdoing magnesium, not knowing what he was taking.
    • 8 Aug 2026 · recommends · YouTube ↗
      Recommends taking magnesium as a co-factor to increase vitamin D absorption.
    • 13 Jun 2026 · neutral · X ↗
      Notes a new study indicating that magnesium is a core dietary antioxidant closely associated with a reduced risk of accelerated biological aging.
  • Siim Land · Magnesium · recommends
    • 25 Oct 2026 · recommends · Instagram ↗
      States that Magnesium can be a useful addition for some people for sleep.
    • 12 Oct 2026 · recommends · YouTube ↗
      Recommends magnesium for sleep, especially deep sleep, and suggests trying better types like Threonate, Biscinate, or Torate, referencing a study where magnesium supplementation improved deep sleep.
    • 7 Oct 2026 · recommends · Instagram ↗
      Recommends Magnesium for blood pressure, migraines and deficiency, based primarily on human research, especially randomized controlled trials showing measurable benefits.
    • 6 Oct 2026 · neutral · X ↗
      Lists Magnesium as one of 15 supplements backed by human studies.
    • 30 Sep 2026 · recommends · Instagram ↗
      States that magnesium is a fundamental mineral governing over 600 enzymes and metabolic reactions, and recommends that most people need at least 400-500 mg/d for health, with some needing up to 600 mg/d.
    • 30 Sep 2026 · neutral · X ↗
      Lists seafood and pumpkin seeds as sources of Magnesium.
    • 6 Sep 2026 · recommends · Instagram ↗
      Thinks magnesium has some of the strongest evidence and is worth considering.
    • 17 Aug 2026 · recommends · YouTube ↗
      Recommends taking magnesium, specifically glycinate and threonate forms, 1 to 2 hours before bed for sleep benefits, noting that glycinate promotes relaxation and threonate crosses the blood-brain barrier for sleep quality and cognitive function.
    • 14 Aug 2026 · neutral · X ↗
      Notes that Boron reduces calcium/magnesium loss.
    • 10 Aug 2026 · recommends · YouTube ↗
      Notes that magnesium is important for activating thiamine into its more biologically active form, and a magnesium deficiency can impair blood sugar regulation even with adequate thiamine intake.
  • Bryan Johnson · Magnesium · uses
    • 22 Oct 2026 · uses · X ↗
      Takes 400 mg of Magnesium Threonate before bed for sleep.
    • 15 Aug 2026 · uses · X ↗
      Takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 4 May 2026 · uses · X ↗
      Takes 400 mg of Magnesium Threonate before bed for sleep.
    • 2 May 2026 · uses · X ↗
      He takes 400 mg of Double Wood Magnesium L-Threonate before bed for sleep.
    • 21 Apr 2026 · uses · X ↗
      Takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 15 Apr 2026 · uses · X ↗
      Takes 400 mg of Magnesium Threonate before bed for sleep.
    • 14 Apr 2026 · uses · X ↗
      Takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 8 Apr 2026 · uses · X ↗
      Takes 400 mg of magnesium L-threonate before bed for sleep.
    • 7 Apr 2026 · uses · X ↗
      He takes 400 mg of Magnesium L-Threonate before bed for sleep.
    • 5 Apr 2026 · uses · X ↗
      Takes 400 mg of magnesium threonate before bed for sleep.
  • Peter Attia · Magnesium · neutral
    • 1 Jun 2026 · neutral · Podcast ↗
      Peter reviews the evidence for select off-label medications and supplements commonly used for sleep, including glycine, magnesium, ashwagandha, and phosphatidylserine.
    • 4 Jan 2026 · recommends · YouTube ↗
      Suggests that zinc and magnesium could potentially help with vasodilation and sleep, particularly for women experiencing severe symptoms in the luteal phase.
    • 15 Sep 2025 · recommends · Podcast ↗
      Peter discusses electrolytes and fiber and the ketogenic diet, specifically preventing magnesium loss.
    • 9 Jul 2025 · recommends · YouTube ↗
      Recommends magnesium as one of the 'big three' micronutrients for bone health, suggesting a daily intake of 300 to 500 milligrams as a minimum, and personally aims for about a gram of supplemental magnesium.
    • 6 Jul 2025 · recommends · YouTube ↗
      Recommends magnesium for optimizing bone mineral density, suggesting a daily intake of 300 to 500 milligrams as a minimum, but personally aims for about a gram.
    • 7 Jul 2024 · recommends · YouTube ↗
      Takes a hardline view that most people do not have adequate or optimal levels of magnesium, and suboptimal levels will impede the metabolism of vitamin D because magnesium is a cofactor in its enzymatic conversion.
    • 1 Jul 2024 · uses · YouTube ↗
      Takes a hardline view that most people do not have adequate or optimal levels of magnesium, and suboptimal levels will impede vitamin D metabolism because magnesium is a co-factor in the enzymatic conversion of vitamin D.
    • 20 May 2024 · uses · YouTube ↗
      Takes magnesium as a straightforward supplement.
    • 28 Feb 2024 · neutral · YouTube ↗
      Mentions that magnesium intake is often super low and impactful on testosterone levels.
    • 11 Dec 2023 · uses · Facebook ↗
      Discusses the important roles of magnesium in the body, how to determine if one might be deficient, the prevalence of magnesium deficiency, and its potential cognitive benefits.

RAL Summary

Members OnlyTier 2 for Blood Sugar

Pooled analyses show magnesium lowers fasting blood sugar and insulin resistance, especially in people with diabetes or at high risk [1][2]. This product's 200 mg dose is near the 250 mg dose that worked in a trial [4].

Where the evidence disagrees: 18 of the 53 human studies found no effect.

More Details

Members OnlyBody systems · Combine with · Possible side effects

Body systems: Endocrine system, Metabolic system, Cardiovascular system

Combine with: To enhance overall well-being and leverage magnesium's benefits, consider combining it with Vitamin D3 and Vitamin K2, as these vitamins work synergistically with magnesium for bone health and proper calcium utilization. For its calming and sleep-promoting effects, magnesium glycinate pairs well with L-Theanine or Ashwagandha for enhanced relaxation and stress reduction. Additionally, B vitamins, particularly B6, can support magnesium's role in various metabolic pathways.

Possible side effects: No major side effects reported.

Supplement Facts

Magnesium 200 mg
Supplement Facts
Serving Size 2 Tablets
Servings Per Container 45
Amount Per Serving% Daily Value
Magnesium (elemental) (from Magnesium Bisglycinate) (Albion)200 mg48%

Label source: the brand's label · Report a label change

Sizes and barcodes: 180 Tablets, UPC 7 33739 01289 0 (on market)

Show entire label
The NOW Magnesium Glycinate label, 180 Tablets
Magnesium Glycinate, 180 Tablets

More blood sugar products

Members OnlyThe highest ranked for the same goal

Read more

Our articles on this subject

Graded October 29, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.