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13 BEST Magnesium Supplements Review 2025: Ultimate Guide

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By:Nick

Updated:

16 Mins.

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Best Magnesium Supplements 1
Best Magnesium Supplements 1

Magnesium is one of the best supplements involved in virtually every vital process (over 600) in your body.

As a supplement, it’s a well-researched and high-impact favorite of doctors, scientists, longevity researchers, health professionals, and personal trainers.

But not all products on the market are equal. Without knowing what to look for, you could do more harm than good. This review will help you make a smart choice.

By the end, you’ll have all the background you need to buy the best magnesium supplement for your unique life.

The Best Magnesium Products of 2025

Overall: RnA ReSet ReMag Ionic Magnesium

All-in-One Formula: Qualia Magnesium+

Spray: Activation Products Ease Magnesium

Slow-Release: Jigsaw Health MagSRT

Your Top Magnesium Supplements Choices

Your goal with magnesium supplements first and foremost should be to maximize elemental magnesium.

To get as much highly-absorbable magnesium as you can. The absolute best way is through a form called ionic magnesium.

It’s rare and hard to find.

If magnesium were patentable, it'd be a billion-dollar drug Share on X

So most supplements contain magnesium bound to another molecule.

With these magnesium products, a larger dose of one kind of magnesium is always better.

There are many different types of magnesium — and each supports different functions in your body.

Certain cofactors and other ingredients create powerful synergies. The top brands know this and have more complex formulas.

I personally take five different kinds of Mg every day, but if I could choose only one, it’d be ionic magnesium.

RnA ReSet ReMag Ionic Magnesium

BEST OVERALL
rnareset remag magnesium bottle

Magnesium Form: Ionic magnesium

Dose: 500mg of elemental magnesium

Contents: 240mL

Serving Size: 1/2 teaspoon

Specialty: Max bioavailability & purity

Uses best & rarest form (ionic magnesium)

Most bioavailable

Purity

Created by one of the leading minds in magnesium therapy

No negative reviews on product page

Taste needs getting used to

Dr. Carolyn Dean is the godmother of magnesium therapy and supplementation.

Her book The Magnesium Miracle served as both a reference and an inspiration to the currently world of magnesium products and minerals.

She founded RnA ReSet out of personal need to bring the highest quality products to market.

Her book highlights modern diets provide far less of this nutrient than ever before. That’s why it makes every list of the best biohacking supplements.

There are other shocking magnesium health facts you can learn as well.

What sets ReMag Liquid Magnesium apart?

Compare this to most magnesium products, which mostly get destroyed by digestion and then are poorly uptaken into cells.

Your body can use as little as 1% of the magnesium in most supplements because of these inefficiencies between digestion, absorption, and assimilation.

The small stabilized picometer magnesium ions within ReMag, on the other hand, easily get through the body into cells.

Giving you the strongest benefits and value.

They provide a Certificate of Analysis for raw ingredients, followed by strict quality control and third-party testing of finished products.

This ensures a well-researched product with purity as a priority.

Bundle ReMag with their other products to save, and subscribe for automatic, hassle-free deliveries.

Developed by the pioneer of magnesium therapy herself, RnA ReSet’s ReMag is the strongest product with unmatched purity (it’s what I use every day alongside their ionic trace minerals).

Get RnA ReSet ReMag

Use RnA Reset exclusive code URBAN to get 10% off

Activation Products Ease Magnesium

BEST SPRAY
activationproducts easemagnesium bottle

Magnesium Forms: Chloride

Dose: 500mg of elemental magnesium

Contents: 250mL

Serving Size: 30-50 sprays per day

Specialty: Max absorption, spot treatment

Top choice for targeted relief

Transdermal delivery option

Highly absorbable

Pricey

Some users report having an allergic reaction

Magnesium chloride oil is one of the best forms of magnesium & Activation Products have taken it to a new level with Ease Magnesium.

Designed for targeted relief & high bioavailability, Ease Magnesium topical spray absorbs quickly into your skin without the usual itchiness of mag chloride oils.

Whether you’re managing post-workout muscle soreness, stiff joints, or everyday magnesium deficiencies, Ease Magnesium provides a simple & effective solution.

Spray it directly onto problem areas for fast, localized relief without taxing your digestive system.

Ease Magnesium is made with iMCH™ (ionic Magnesium Chloride Hexahydrate), a pure form of magnesium from the Dead Sea.

It is carefully purified to meet high safety standards, making it easy for your body to absorb and use than other magnesium sprays. This helps relax muscles, reduce stress, and support overall health.

Backed by 10 years of research & development, this magnesium is non-synthetic & purified to pharmaceutical standards, enhancing safety & efficacy.

Choose a single bottle or save more with their bundle packs (available in 3 or 6 bottles). Subscribers enjoy a 15% discount & hassle-free, automatic deliveries.

Ease Magnesium is ideal for anyone seeking a clean, highly bioavailable, & non-irritating magnesium spray that works fast to optimally support muscles, joints, & overall health.

Get Ease Magnesium

Use Activation Products discount code NICK to save 15%

Qualia Magnesium+

BEST FULL-SPECTRUM fORMULA
qualia magnesium bottle

Magnesium Forms: Acetyl taurate, aspartate, bisglycinate chelate, citrate, creatine chelate, gluconate, taurate, hydroxide, chloride

Dose: 350mg of elemental magnesium

Contents: 56 capsules

Serving Size: 2 capsules

Specialty: 9 magnesium forms in one

Most magnesium forms in one formulation

Backed by decades of research

Includes other essential minerals

Massive 50% discount when you subscribe to Qualia

A few fillers were used

Unclear how much of each form was used

Previously called Neurohacker Collective, Qualia is known for its cutting-edge, science-backed formulas.

Their Magnesium+ delivers nine highly bioavailable types of this magnesium in one.

Ensuring better absorption and the greatest full-spectrum benefits of any product—from muscle recovery to deep relaxation & cognitive support.

What sets Qualia Magnesium+ apart is its inclusion of:

  • 70+ trace minerals
  • 9 forms of magnesium
  • 7 amino & organic acids

The Qualia science team pioneered the use of complex systems to innovate and test what forms work best with each other consistently.

This is why they are able to combine all these ingredients together for a holistic and synergistic approach.

One thing I’d like to see, however, is them removing any fillers. I just happened to see Silicon Dioxide in the “Other Ingredients” list in the label. Nonetheless, Magnesium+ is still an exceptional product.

You save a whopping 50% off on their Magnesium+ simply by subscribing to Qualia. Should you not love it, they also offer a 100-day money-back guarantee.

Qualia Magnesium+ has an industry-leading 9 bioavailable magnesium forms, 70+ trace minerals, 7 amino & organic acids, and a record-breaking 50% savings if you subscribed. If you want an evidence-based all-in-one magnesium, this is the clear winner.

Get Magnesium+

Use the exclusive Qualia promo code URBAN to save 15%

BiOptimizers Magnesium Breakthrough

BEST pOTENCY
bioptimers magnesium gifts e1670554157920

Magnesium Forms: Chelate, bisglycinate, sucrasomal, malate, orotate, taurate, citrate

Dose: 500mg of elemental magnesium

Contents: 60 capsules

Serving Size: 2 capsules

Specialty: High potency

Also contains multiple forms in one

You can request for a 3rd-party CoA

Free gift for orders $150+

Full 365-day money-back guarantee

Expensive

Some users have complained about shipping

BiOptimizers has an obsession with using optimal, effective doses of the most researched ingredients.

Their team of scientific advisors and experts include Dom D’Agostino, Monia Avdic, PHD, Sabina Halilovic, PHD and some of the world’s greatest supplement formulators.

Magnesium Breakthrough combines 7 different forms of magnesium in a monoatomic humic & fulvic blend to optimize the mind and body and further optimize absorption.

Their formula includes vitamin B6 and manganese for even greater effects (backed by this study).

Over the last few years, the BiOptimizers tribe has grown by leaps and bounds. They’re so confident that you’ll like their magnesium that they offer a full 365-day money-back guarantee.

Though they cost more than most products, remember, the most expensive products are the ones that don’t work.

BiOptimizers Magnesium Breakthrough is another great full-spectrum magnesium product with optimal doses on multiple well-researched ingredients .

Get BiOptimizers Magnesium

Use the BiOptimizers exclusive promo code URBAN to save 10%

Natural Stacks MagTech

BEST 3-IN-1 cOMBO
natural stacks magtech

Magnesium Forms: Taurate, L-threonate, glycinate

Dose: 300mg of elemental magnesium

Contents: 90 capsules

Serving Size: 3 capsules

Specialty: 3 forms in one

Company has specialized in brain-boosting formulas for years

Non-GMO, paleo-friendly, vegan, gluten-free capsules

Transparency program for lab results

Inconsistent online customer support

Natural Stacks has sold cutting-edge supplement formulas since 2013. They specialize in brain-boosting nootropics, but have expanded into other facets of human performance optimization.

MagTech® is a highly-bioavailable combination (“stack”) of three potent forms of magnesium: Magnesium L-threonate (100mg of Magtein), Magnesium Taurate (630mg), and Magnesium Glycinate (600mg).

All in all, a serving of three capsules provides 200mg of elemental magnesium.

This unique combination merges relaxation and sleep-promoting effects of magnesium glycinate with brain-enhancing magnesium L-threonate and taurate.

Natural Stacks has an “Open Source” transparency program for every batch which allows for the ability to trace ingredients and third-party lab test results.

This technology is powered by blockchain and secured by HealthLoq™, ensuring transparent, tamperproof, trusted supplement quality.

In addition to the 4.9-star rating on hundreds of reviews, Natural Stacks offers a 100 percent happiness guarantee.

Should you have any qualms, they’ll give you a full refund and let you keep the product within 30 days.

Natural Stack’s MagTech® is the ideal product specializing in optimizing brain function and promoting sleep.

Get Natural Stacks MagTech

Use Natural Stacks discount code URBAN for 15% off

LVLUP Health Magnesium L-Threonate

BEST RESEARCHED FORMULA
lvluphealth magnesium lthreonate bottle

Magnesium Forms: L-threonate

Dose: 100mg of elemental magnesium

Contents: 120 capsules

Serving Size: 4 capsules

Specialty: Unparalleled formula research

Provides studies on their products

Researched & developed by MIT scientists

Nutrients cross the blood-brain barrier easily

Free shipping only for orders over $300

Virtually no negative reviews on the product page

LVLUP Health is a company that deeply understands and utilizes scientific formulas to deliver the best quality therapeutic peptides, naturopathic herb extracts, and other supplements.

Their Magtein Magnesium L-Threonate is their patented form of magnesium, developed by MIT scientists to help enhance mitochondrial function and neuroplasticity all on its own.

They include multiple randomized studies and animal studies on the effects of their Magtein formulation for both the brain and longevity.

This includes:

  • Increased brain magnesium levels
  • Improved learning and memory
  • Therapeutic potential for Alzheimer’s
  • Reduced fear-related memories; and more

LVLUP Health currently offers free shipping on orders over $300 and $10 off with a subscription. Or you can use my code below to get an additional 15% off.

LVLUP Health Magnesium L-Threonate is a clinically-backed formula developed and tested by the best researchers in the world to keep your mind sharp and healthy.

Get LVLUP Health Magnesium

Use the exclusive LVLUP Health code URBAN for 15% off

Performance Lab Magnesium

BEST BRAIN SUPPORT
performancelab magnesium bottle

Magnesium Forms: L-threonate

Dose: 100mg of elemental magnesium

Contents: 90 capsules

Serving Size: 3 capsules per day

Specialty: Cognitive support

Highly bioavailable

No artificial additives

Caffeine-free cognitive boost

Rather expensive one-time purchase

If you’re looking for a magnesium supplement that goes beyond the basics, Performance Lab Magnesium has you covered.

Using NutriGenesis® technology, it delivers Magnesium L-threonate in a food-identical form your body recognizes instantly.

That means better cognitive function, muscle support, and relaxation – without the digestive issues common with synthetic forms.

Because it uses magnesium L-threonate, it’s easier for the nutrients to cross the blood-brain barrier, making it a top choice for enhancing cognitive performance.

Whether you’re tackling brain fog or need help to wind down after a long day, this supplement delivers.

Their commitment to purity is also clear in every capsule. Made without artificial additives, the vegan-friendly formula features prebiotic fiber capsules for gut health support.

It’s also non-GMO, caffeine-free, & validated by third-party testing for quality assurance.

Each serving of 3 capsules costs $1.30, but their buy-3-get-1-free deal makes stocking up easy & affordable. You can take the full dose at once or spread it throughout the day to fit your routine.

Performance Lab Magnesium is perfect for those seeking an advanced supplement to get rid of brain fog, support cognitive health, aid sleep, and more.

Life Extension Neuro-Mag Magnesium L-Threonate

BUDGET L-THREONATE
lifeextension neuromag img1 1

Magnesium Forms: L-threonate

Dose: 144mg of elemental magnesium

Contents: 90 capsules

Serving Size: 3 capsules

Specialty: Affordable L-threonate

Affordable

CoA available on request

Uses unnecessary fillers, binders & excipients

I’ve taken Life Extension (LE) products for a decade. LE has a huge catalog of supplements and affordable prices.

Though I’m not a fan of their other magnesium products (contains magnesium oxide), Neuro-Mag is one of the trusted vendors of L-threonate.

Due to the low quantity of elemental magnesium, the serving size of L-threonate products is generally around 6 capsules. 3 Neuro-Mag capsules contains 2,000mg of Magtein.

But if you’re looking for a budget-friendly L-threonate supplement, I’d pick Life Extension.

Jigsaw Health MagSRT

BEST SLOW RELEASE
jigsaw magsrt bottle

Magnesium Forms: DiMagnesium malate

Dose: 500mg of elemental magnesium

Contents: 240 tablets

Serving Size: 3 tablets

Specialty: Extended-release formula

Slow release formula

Passed ConsumerLab supplement verification

Used in a placebo controlled study

Uses cellulose in “Other Ingredients”

In 2005, Jigsaw Health created a time-release product that uses proprietary Sustained Release Technology to slow the release of magnesium over 8 hours.

This maximizes absorption and avoids digestive discomfort.

Since then, they’ve become America’s #1 time-release magnesium trusted by the biggest names in health and wellness, including Wellness Mama, Ben Greenfield, Thomas DeLauer, and dozens of others.

MagSRT® has unique features. First, the formula uses highly absorbable Albion® Labs DiMagnesium Malate.

Each serving equates to 500mg of elemental magnesium along with the synergistic active forms of B Vitamin Cofactors (B6, B9, and B12) which further enhances absorption.

Unsurprisingly, their products are manufactured in GMP-Certified facilities and undergo 3rd party label verification.

Should you already take a B vitamin complex, you can get the MagSRT® formula without B-Vitamins as “MagSRT (B-FREE)”.

MagSRT users start feeling a difference within the first week. Backed by a placebo-controlled human clinical trial showing significant improvements.

Perhaps it’s the robust third-party verification, or maybe the 90-day money-back guarantee. Either way, they’ve earned a 4.7-star reputation on over 5,482 reviews.

Buy MagSRT for the highest-rated clinically validated slow-release magnesium supplement.

Get Jigsaw MagSRT

Use Jigsaw discount code URBAN10 for 10% off

Bulk Supplements Magnesium Malate Powder

BEST MALATE POWDER
bulksupplements magnesium malate powder 500g 1

Magnesium Forms: Malate, oxide

Dose: 400mg of elemental magnesium

Contents: 500g

Serving Size:  2.5g (~1 tsp)

Specialty: Affordable magnesium

Affordable

Better control overdosing

Taste naturally not the best

Uses magnesium oxide but not mentioned in product page

Bulk Supplements has always been one of my go-tos when stocking up for clean, affordable products for almost any goal.

Bulk Supplements Magnesium Malate powder allows you versatility in usage and granular control over dosing. So you can enjoy your magnesium in smoothies, your workout drink, tea, or just plain water.

Do note that there’s one slight disadvantage to this, common with powder supplements, which is taste.

One red flag is that the product page doesn’t mention Magnesium Oxide.

When I checked the label, the 400mg magnesium “comes as Magnesium Malate & Magnesium Oxide”. The issue is, they don’t say how much of each is used.

Magnesium oxide also has relatively poor bioavailability compared to other magnesium forms, so that’s why they might hide that. While magnesium malate is great for energy, endurance, and detoxification still.

This product is gluten-free with no additives and added sugar. Bulk Supplements ingredients are also third-party tested for purity, heavy metals, and potency.

Save 10% and get automatic deliveries by subscribing to Bulk Supplements. They ship from Las Vegas & Nashville so you can expect 2-day deliveries in the US.

If you’re serious about performance & recovery with affordability and full control of dosage, pick up Bulk Supplements Magnesium Malate Powder.

Get Bulk Supplements Malate

Use Bulk Supplements discount code SAVE5 for 5% off

Thorne Calcium-Magnesium Malate

BEST fOR ATHLETES
thorne calciummagnesium malate bottle

Magnesium Forms: Malate

Dose: 100mg of elemental magnesium & 100mg of elemental calcium

Contents: 240 capsules

Serving Size: 1-2 capsules

Specialty: Peak physical performance

NSF-Certified for Sport

Combination with calcium makes it great for athletes

Good calcium-magnesium ratio

Some users reported feeling no difference

What sets Thorne apart? Relentless quality control.

Every batch of their Calcium-Magnesium Malate is NSF-Certified for Sport so they’re tested and cleared of over 200 substances banned by major athletic organizations.

Both magnesium and calcium are essential for bone density, heart health, and muscle relaxation. That’s why magnesium and shilajit also make a great pair.

They not only support bone health but also many potent benefits that affect other aspects of your well-being.

This dynamic duo in Thorne’s formula helps support strong bones, muscles, and nerve function. Making it ideal for athletes, elite competitors, or even just for folks who want to improve physical performance.

This product is gluten-free, soy-free, dairy-free and derived from natural flavors.

Subscribe to Thorne to get up to 20% off and free shipping.

Offering 2 key minerals in a scientifically validated 1:1 ratio, Thorne’s Calcium-Magnesium Malate is a certified-clean magnesium formula trusted by athletes and top performers worldwide.

Thorne Magnesium Bisglycinate

BEST BISGLYCINATE
thorne magnesiumbisglycinate jar e1738970026952

Magnesium Forms: Bisglycinate

Dose: 200mg of elemental magnesium

Contents: 187 grams

Serving Size: 1 capsule

Specialty: Restful sleep & relaxation

NSF-Certified for Sport

Easy to adjust dose

No unnecessary fillers

Some users report the powder tasting too sweet

Another Thorne product makes the list, this time, one that excels in recovery, restful sleep, and muscular relaxation.

Their Magnesium Bisglycinate is also NSF-Certified for Sport so elite athletes can still use this to help muscles relax, enhance blood flow, and protect heart health without worry.

If you have trouble sleeping, this is also good choice for pre-bedtime supplementation as magnesium biglycinate is a calming neurotransmitter.

Thorne’s formula pairs magnesium with glycine for superior absorption & zero gut discomfort. That just means no wasted doses. Plus, it’s in powder form so you can adjust the dose as you see fit.

Subscribe & save 10%, plus get free shipping on orders over $75. If it’s not for you, Thorne offers a 60-day refund policy.

If you have trouble relaxing or sleeping, pick up Thorne’s Magnesium Bisglycinate to get the best rest you deserve every day.

Source Naturals Magnesium Malate Pills

BEST fOR TRAVEL
sourcenaturals magnesium img

Magnesium Forms: Malate

Dose: 425mg of elemental magnesium

Contents: 360 tablets

Serving Size: 3 tablets

Specialty: Effectiveness to value & travel

Time-tested company and product

Great beginner choice

Great value for price

Pills are big

Contains inactive ingredients

When I first discovered the best forms of magnesium, I looked for dimalate. Source Naturals has stood the test of time, selling this exact product since before 2004.

Every time I travel I carry this magnesium with me.

This is a chelated form of magnesium, and can readily cross the blood-brain barrier. The malic acid has been shown to bind to aluminum.

Magnesium malate does not have the laxative effects of other forms.

Each tablet contains 1,250mg of magnesium malate which is about ~141mg of elemental magnesium.

The pills are HUGE. Among the biggest I’ve taken, and one serving takes three tablets.

Again, unfortunately, this product contains inactive ingredients like stearic acid, acacia gum, modified cellulose gum, silica, and magnesium stearate.

This is a common issue with large manufacturers.

Source Natural products are non-GMO, vegetarian-safe, hypoallergenic, and free of dairy, egg, gluten, corn, soy, wheat, sugar, starch, preservatives, artificial color, flavor, and fragrance.

Pro Tip: Make sure to get the tablets. There’s another listing with capsules which is a far worse deal.

At about $0.07 per tablet, Source Naturals Magnesium Malate is what I recommend to most people interested in trying magnesium.

Magnesium Background

Are Your Magnesium Supplements A Waste of Money

Magnesium is one of thirteen essential minerals in the human body. Your body requires ample minerals to perform its basic functions.

Minerals come from the Earth, and are uptaken by plants and animals. We get most of our intake via food. Even slight deficiencies cause vital functions in the body to begin failing.

"Up to 85% of doctors visits can be attributed to magnesium deficiency" – Carolyn Dean Share on X

Essentially, minerals promote:

  • Growth
  • Regeneration
  • Energy
  • Performance

The body cannot self-balance without adequate minerals. Magnesium alone is involved in over 600 different biochemical reactions.

That’s why approximately 80 percent of the world needs more of this super nutrient. For things like:

  • Energy
  • Stress relief
  • Learning & memory
  • Brain chemical production
  • Cardiovascular health
  • DNA repair, longevity
  • Testosterone & hormone health
  • Weight loss
  • Alleviating symptoms of dozens of health conditions [R]

Consistent intake leads to peak physical and mental performance.

Additionally, minerals help the body:

  • Produce energy
  • Cellular repair
  • Wound healing
  • Sleep faster and deeper
  • Enhance the heart, reduce blood pressure, help prevent disease
  • Optimize the nervous system
  • Power your muscles and movement
  • Strengthen the immune system
  • Build strong bones and teeth
  • Hormone production
  • Repair DNA
  • Promotes skin health

Widespread deficiency plagues modern humans for several reasons.

One is magnesium-depleted soils. Pesticides, herbicides, and nitrogen fertilizers kill the rich soil ecosystem resulting in low-mineral crops.

Anti-nutrients also prevent absorption. Oxalic acid in greens, phytic acid in seeds and grains, tannins in teas, and certain chemicals in waters all bind to magnesium and render it unabsorbable.

There’s also cooking, especially at high heat, which destroys magnesium.

Here’s the thing…

You can survive with sub-optimal magnesium levels, but you won't thrive Share on X

For more information, check out this article on why everyone is magnesium deficient.

Or listen to my interview with a magnesium expert:

Why magnesium blood tests are useless

Standard blood testing does not accurately indicate how much usable magnesium you have in your body.

Here’s why.

General wellness panels measure what’s called “serum blood magnesium”.

Serum blood magnesium tests include the magnesium in your bones, cells, and tissues. We care most about the magnesium available for your body to use.

The body’s innate intelligence closely regulates magnesium levels. As soon as magnesium in the bloodstream declines, the body pulls it out of cells to stabilize.

Thus, a serum test may falsely show normal levels.

Several better tests exist:

  • Ionic magnesium
  • EXATest
  • RBC magnesium

For ease and cost, I prefer the highly accurate RBC magnesium test which comes included in advanced blood panels (such as InsideTracker).

If you care about optimizing your health and performance, you’ll want to check out my InsideTracker Ultimate review.

Taking magnesium

Optimal Magnesium Dosage Zone for Human Performance

Today, even the cleanest whole-foods diet lacks adequate magnesium. Unfortunately for those following keto or paleo, grains and legumes are some of the best sources.

Supplementing magnesium is especially important on keto, while fasting, and for those that need to accelerate growth and recovery.

Serum magnesium levels follow a diurnal pattern. It should naturally spike in the morning and evening. You can take it with or without food.

If you experience any of the below side effects, research suggests that consuming with food can prevent them.

This is a basic breakdown of the forms of magnesium and whether you need to take them on an empty stomach for maximum absorption.

Inorganic salts (taken on an empty stomach)Organic salts (taken with or without food
OxideCitrate
ChlorideGlycinate
SulfateChelate

When I do an extended fast (2-7 days), I double down on magnesium intake.

If you sweat or push yourself while fasting, minerals help the body recover faster and normalize stress hormones. I like to take magnesium alongside Celtic sea salt and another potassium-rich salt.

What to look for in a magnesium product

The TRUTH about Magnesium Therapy & Your Mineral Supplements | Dr. Carolyn Dean

Sadly, many of the most popular magnesium products don’t work. Including the ones with fancy labels and cool colors. They have the same glaring problems as other dietary supplements.

Since any product won’t do, here’s what I look for when I come across new magnesium:

  • Amount of elemental magnesium
  • Any fillers, binders, excipients
  • Third-party verification. United States Pharmacopeia or the National Products Association
  • Serving size and type of product
  • Synergistic ingredients added to the formula
  • Form of magnesium (and the corresponding percent of elemental magnesium absorbed)

That last one warrants special attention.

How to make magnesium supplements work better (and reduce potential side effects)

Back in the days of mineral-rich soil, we’d naturally get plenty of magnesium along with other vitamins and minerals.

Man-made supplements generally don’t absorb as well as whole-foods sources.

Vitamin B6 helps carry magnesium into our cells. Most people, however, don’t have the genes to do the conversion efficiently.

Plus, those with unhealthy livers have an even harder time transporting magnesium into cells. The better activated form called P5P (Pyridoxal-5-Phosphate) skips the conversion process.

P5P is responsible for 30 essential enzymatic reactions, this includes generating the brain’s serotonin and dopamine.

If you get diarrhea or other symptoms of poor absorption, it indicates that you’re consuming more magnesium than the body can handle. Choosing a product with P5P can help.

Most effective forms of magnesium

I’ve counted over 9 different forms of magnesium. Each with specialties and drawbacks. What follows is the background on the best commercially available forms of magnesium:

Magnesium TypeAbsorptionUses & BenefitsSide EffectsPriceValueOther Notes
OxideLowFiller in supplementsDiarrheaVery CheapLowGenerally not recommended
AspartatePotentially neurotoxicModerateLowFound in a supplement called ZMA
Glycinate14%Great for sleep, relaxation, recovery, anti-anxiety, depression, and symptoms of excess stomach acid (upset stomach, heartburn, acid indigestion)NoneModerateGreat
Citrate25-30%Citric acid chelates calcium and oxalates which helps prevent kidney stones. Also improves arterial stiffness and reduces obesity. May increase athletic performance by reducing lactate accumulation.DiarrheaCheapGoodOne of the most common forms recommended
L-ThreonateLowCrosses the blood-brain barrier where it improves memory, attention, and processing speed. Limited research suggests it can help with cognitive dysfunction, sleep disorders, and anxiety.NoneExpensiveMediumStudy found L-threonate reduced measures of brain age by nine years.
OrotateGoodParticularly beneficial for the cardiovascular system. ⁣⁣⁣Might improve improving athletic performance, endurance, heart health, and metabolic health.NoneExpensiveLow
Chloride (Oil)GreatNear instant effects.Increases stomach acid, boosts energy and endurance, promotes relaxation and sleep, and most notably, reduces muscle soreness, pain and cramping.Itchiness for the first few applicationsModerateGreatVery high absorption, due to the form and transdermal delivery method.
Sulfate (Epsom Salt Baths)GreatNear instant potent, full-body effects.Increases stomach acid, boosts energy and endurance, promotes relaxation and sleep, and most notably, reduces muscle soreness, pain and cramping.Deep relaxationModerateGoodVery high absorption, due to the form and transdermal delivery method.
Malate & DimalateGreatCan help improve migraines, depression, the respiratory system, metabolic health, mood, blood sugar control, exercise performance, and chronic pain.NoneCheapGreatMy second favorite. Found naturally in certain fruits.
TaurateGreatCan benefit the brain, improveheart health, blood sugar and blood pressure regulation.NoneModerateMediumOften combined with L-threonate.
Sucrosomial (Liposomal)GreatSupports energy production, strengthening the immune system, improving bone health and skeletal development.NoneExpensiveMediumLiposomal supplement technology is more expensive but vastly increases absorption. Unknown if this is worth the cost for magnesium.
HydroxideLowUsed as a laxative and to buffer stomach acid.Laxative, reduces stomach acidCheapLowPoorly absorbed due to low solubility in water. Found in milk of magnesia.
Comparison of different forms and types of magnesium

The rough calculation of the actual amount of magnesium you absorb is:

dose x elemental magnesium x absorption rate of the specific type

Your body uses different forms of magnesium differently.

Smart manufacturers have begun combining forms for synergistic effects.

One such example is MagTein® (L-Threonate & Acetyl Taurate). This form better crosses the blood-brain barrier, reduces anxiety, supports healthy GABA levels, and improves memory.

The best, however, combine even more. One of my favorite products contains 7 different forms of magnesium (as you learn below).

Note: Check with your healthcare provider before choosing a product

Magnesium Questions & Answers

Possible side-effect symptoms

Magnesium is a natural calcium channel blocker. Though this is good to block the harms of non-native EMF, it can also interact with certain drugs and medications.

While considered extremely safe, magnesium supplementers sometimes report side effects with diarrhea, dizziness, headaches, blood pressure, and social calmness.

Best times to take magnesium

Serum magnesium follows a diurnal rhythm. It is best to take magnesium first thing in the morning (the ideal form is magnesium malate for the additional energy production effects), and in the evening (in the form of either magnesium glycinate, L-threonate, chloride, or sulfate).

This helps maximize absorption and best supports the body’s needs.

Benefits of supplementing magnesium

Magnesium is a mineral with a profound impact on your health.

Some of the many benefits of magnesium include:

  1. Rapid recovery
  2. Speeding up wound repair
  3. Strengthening the immune system
  4. DNA/RNA repair
  5. Relaxed alertness
  6. Energy production
  7. Building resilience against degenerative stressors
  8. Accelerating learning
  9. Enhanced memory
  10. Boosting mood
  11. Protecting the heart, adrenals, and brain
  12. Blunting inflammation
  13. Weight loss, fat burning, insulin sensitivity
  14. Optimizing testosterone and thyroid levels
  15. Acting as an antioxidant
  16. Sleeping deeper and longer
  17. Promoting skin health
  18. Strengthening teeth and bones

For a comprehensive list, see the ultimate guide to magnesium’s health benefits.

Top food sources naturally highest in magnesium

Before supplementing, you may want to try consuming natural sources of magnesium in your diet.

The foods with the greatest magnesium content include:

  • Nuts
  • Seeds
  • Grains
  • Chocolate
  • Legumes
  • Avocado
  • Other greens

The RDA for magnesium was set (and not since updated) decades ago. Since then, factory farming has depleted our soils of nutrients (including magnesium).

Cooking and processing further degrade magnesium into a form not readily used by the body. So supplementation is generally still a good idea.

Uses for Magnesium Supplements

Magnesium is a natural muscle relaxer, helping with cramps, hypertension, vasoconstriction (headaches).

It’s also a great sleep aid, promotes recovery, increases energy, and enhances the body’s natural resiliency.

It’s used by everyone ranging from professional athletes to kids.

The Top Magnesium Supplements: Final Verdict

Clinical deficiency or not, virtually all modern humans live with sub-optimal magnesium levels.

Without adequate magnesium, you’ll get by but won’t thrive. It’s one of the body’s chief catalysts for recovery, growth, and regeneration.

Like other minerals, it’s highly underrated.

If magnesium were patentable, it would be a billion-dollar product Share on X

Magnesium supplements are cheap, effective, and easy to find.

Though it exerts dozens of benefits on the healthy and sick alike, supplementing magnesium can get complicated.

  • Are 7 forms better than 1?
  • Which synergistic ingredients should I look for?
  • Do I only care about the dose of elemental magnesium?

Each of the above brands sells potent, high-quality products. I prefer products that contain multiple forms, as they harmonize for greater effects (akin to 1+1=3).

My favorite magnesium products are:

Try any of the above and you’ll understand why magnesium is one of the top health optimization supplements.

Do you take magnesium? Let me know your experience in the comments below!

Post Tags: Anti-Aging, Diet, Gear, Lifestyle, Longevity, Nutrition, Recovery & Resilience, Supplements

4 thoughts on “13 BEST Magnesium Supplements Review 2025: Ultimate Guide”

  1. Hi Nick,
    About the Bioptimizer Magnesium Breakthrough supplement, what is the point of adding manganese to the formulation?

    I was unable to access the related study supporting an improved effect.

    Reply
    • Hi! BiOptimizers often adds other co-factors to their formulas to increase the bioavailability (absorption) of the ingredients. With this, get 50%-300% better absorption, depending on the product and ingredients.

      Reply
  2. Hi! My girlfriend has moderate hearing loss. We were taking Natural Calm and she did well with it but we hear it does not absorb well. She lacks they mild laxative effect though. She took magnesium glycinate and it caused tinnitus. Any suggestions for a type that will absorb and not cause tinnitus?

    Thanks,
    Sy

    Reply
    • Hi Sy. Sorry to hear that she hasn’t had a good experience so far. I haven’t heard of mag glycinate causing tinnitus. Are you sure it was the mag itself? Of the orals, I personally like magnesium malate best.

      Reply

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