Latest update: November 03, 2025 - 4 minute read

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The Best Magnesium of 2025: A Buyer's Guide

Magnesium glycinate is popular, but which one is the best for results?

IMPORTANT: If you’re trying to find the best magnesium supplement in 2025, you're in the right place. We tested the top 5 brands. Our research reveals the biggest mistakes shoppers make, why some magnesium is toxic, and which brand has up to 46x less heavy metals when tested in a lab.

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WHAT IS MAGNESIUM?

Magnesium is a mineral found in every organ in your body. It is critical to bodily functions, the nervous system, and bone density. It is the most abundant mineral in the human body and has over 3,000 receptor sites.

According to University Research, more than 75% of adults are magnesium deficient because they aren't getting enough through their diets.

MAGNESIUM AFFECTS MANY BODILY SYSTEMS

  • Musculature Cramping

  • Heart Health

  • Regularity

  • Mineral Bone Density

  • Turns Glucose Into Energy

  • Stress and Sleep

Normally, we receive magnesium through our diet, leafy greens, nuts, beans, and fish. Because our food quality is getting worse, and chemicals are sprayed into our air, we have difficulty holding minerals in our bodies.

As we age, the problem is compounded. The result is a population where many of us are magnesium deficient. Supplementation is commonly suggested by medical practitioners.

According to PubMed.gov total and intercellular magnesium (found in our bones and cells) tend to decrease with age. Chronic deficiency has been linked to fatigue, depressed mood, internal stress, hypertension, diabetes, sleep, and heart issues. 

However, adequate magnesium over long periods of time shows an increase in mineral levels in bones, and may prevent joint-related disease; it can balance muscular cramping and calm stress, which may help counteract the aging process.

A QUALITY MAGNESIUM SUPPLEMENT CAN

  • Reduce Muscle Cramps and Tingling

  • Increase Sleep Quality

  • Improve Immune Systems

  • Increase Bone Density

  • Decrease Stress Responses

  • Dramatically Improve Constipation

Studies show supplementing magnesium helps with muscle recovery and spasms, helping us sleep. It has a critical role in stabilizing the nervous system and blocking stress-related responses, helping us calm down.

Magnesium also can block cortisol, the stress hormone that packs on the pounds. It increases water in the intestines, which is why it's used as a laxative.

LOW MAGNESIUM CAN CAUSE

  • Headaches

  • Poor Circulation

  • Weight Gain

  • Anxiety and Stress

  • Sleep Problems

  • Leg Cramps

  • Low Energy

some are More likely to be deficient

  • Elders Over the Age of 65

  • Those with Digestive Issues

  • Low Mineral Holders

  • Poor Diets

WHAT ARE THE DIFFERENT TYPES OF MAGNESIUM?

Magnesium comes in many forms.The human body absorbs them differently depending on what element is bonded to it. It's important to check the label and understand the differences.

Magnesium Glycinate: Glycinate is the preferred magnesium for sleep, cramping, heart health, and constipation. Widely considered the best form of magnesium on the market because of its incredible absorption rate.

Magnesium Citrate and Malate: Bound with citric or malic acid, these are some of the more common forms found in supplements. Citrate, specifically is well absorbed, but glycinate is preferred because it's often easier on the stomach.

Magnesium Oxide: Bound with oxygen, this isn’t often used for anything outside of digestive issues. Glycinate is 4 times more absorbable than magnesium oxide.

Magnesium Threonate: Threonate is often used for cognitive purposes such as supporting brain injuries.

HOT TIP

Look for a magnesium formula with Zinc to boost effects. Zinc, when taken with magnesium in low doses, can increase magnesium absorption.

Do not buy cheap magnesium, as they have dramatic heavy metal swings. Consuming heavy metals often causes lethargy, immune system dysfunction, and weakness.

WHAT YOU NEED TO WATCH OUT FOR

Not all magnesium glycinate is created equal. So, before spending your hard-earned money, make sure you don’t make these common mistakes.

  • Magnesium Blends: Some brands use cheap magnesium oxide to increase the milligrams per serving. This lowers the absorbability and reduces its effect by 4 times.

  • Side Effects: The only side effect you should experience with high quality magnesium is increased bowel movements...nothing more. All minerals can be hard to digest so it's best taken with food.

  • Fake Reviews: Do not trust AMZN reviews as they are often bought and fake. This is a pervasive practice called "review farming." Just because a product has great reviews on a big marketplace does not mean it is quality.

  • Heavy Metals: Chinese magnesium is unfortunately today's standard, often containing lead and arsenic. Our #1 product below was the only product we've seen that's chelated in the USA, and has consistently low heavy metal readings.

Best Magnesium of 2025

Magnesium Glycinate Only

Only

Glycinate

Third Party Lab Tested

Third Party

Lab Tested

46x's Less Heavy Metals

46x's Less

Heavy Metals

Magnesium Per Serving

Magnesium from

Glycinate

90 Day Guarantee

90 Day

Guarantee

Confirmed GMP Certified

Confirmed GMP

Certified

Binders & Additives

Binders &

Additives

275mg

1

60mg

3

200mg

3

0mg

5

Trademarked Magnesium

Third Party Lab Tested

Up to 46x Less Heavy Metals

Magnesium Per Serving

90 Day Guarantee

Confirmed GMP Certified

Binders & Fillers

275mg

1

250mg

1

60mg

3

200mg

3

400mg

5

A+

RATING

PROS

  • For Cramps, Sleep, Heart, and Stress*

  • 275mgs of Magnesium

  • Up to 46x Less Heavy Metals

  • Low Dose of Zinc

  • Third Party Tested Twice

  • Chelated in the USA

  • FDA Registered & GMP Certified

  • Vegan Friendly

CONS

  • Sells Out Often

  • Only Available on Their Website

The Bottom Line

We have never seen any magnesium quite like this.

The minerals use in Pure Magnesium Glycinate by Organics Ocean are trademarked and extracted from the Dead Sea, then powdered in Utah.

The outcome is the most bio-available, purest magnesium we've every tested.

Most magnesium sold today is processed in China....often containing higher heavy metal readings...and brands DO NOT want you to know.

Most formulas add 3-4 synthetic fillers and binders to the magnesium. Ocean only uses 1 - tapioca flour.

This magnesium will work best for both men and women searching for the best quality sleep, muscle cramping, and heart support.

Over 200,000+ consumers use this magnesium and the reviews are insane.

There is one drawback. Demand is growing fast, so it has sold out a few times.

Tap the LEARN MORE button below and get a new customer promo code. They have a 90-day return policy so you have nothing to worry about.

PROS

  • For Regularity, Cellular Energy & Relaxation

  • 250mg of Magnesium

  • Up to 46x Less Heavy Metals*

  • No Nasty Fillers

  • Chelated in the USA

  • Third Party Tested Twice

  • Vegan Friendly

  • FDA Registered & GMP Certified

CONS

  • Sells Out Often

  • Only Available on Their Website

The Bottom Line

If you want to start off a bit slower than the higher dosed glycinate product, but you still want maximum purity and bioavailability, this is for you.

This formula, also from Organics Ocean, contains the same hyper-pure Chelamax® minerals found in the #1 product above.

It contains 250mg of magnesium, from magnesium citrate.

The preliminary heavy metals tests again show up to 46x less than over-the-counter brands.

This formula contains just one all-natural additive; tapioca starch (flour)...which is very rare.

If you're looking for regularity support specifically, this would be a strong choice.

Since this is sourced from the Dead Sea, stock up as the supply chain is indeed fragile.

Tap the LEARN MORE button below and get a new customer promo code. They have a 90-day return policy so you can send it back if you don't like it.

3: Magtech

by Natural Stacks

B

RATING

PROS

  • GMP Certified

  • Third Party Tested

  • Good Return Policy

CONS

  • Lower Quality Magnesium Blend

  • Low Glycinate Content

  • No Zinc

  • Big Capsules

The Bottom Line

It is a good magnesium product, containing 200mgs per serving. It's made up of 3 magnesium salts including threonate, glycinate, and taurate.

We would recommend going with a magnesium glycinate or citrate-only product like our #1 and #2 pick, so you get the best absorbability. But if you insist on a magnesium blend, this is our #3 pick.

We can not confirm where they source their magnesium.

Price starts at $37/bottle.

4: Magnesium Glycinate

C

RATING

PROS

  • USA Standards

  • Third Party Tested

  • Just Glycinate

  • Money Back Guarantee

CONS

  • Only 200mgs per Serving

  • Expensive for the Dose

  • No Zinc

  • Only 60 Capsules

The Bottom Line

This formula is suitable for vegans. It contains 200mgs of magnesium glycinate per serving, which is standard for most brands. It has a 90-day return policy.

Upon further investigation of their capsules, they are tinted brown, which is likely reflective of the binders and additives. If you look at the "other ingredients" on their label, there are 3 fillers/additives.

Overall, it's a decent pick coming in at #4.

Price starts at $36/bottle after shipping.

5: Magnesium Caps

C-

RATING

PROS

  • Made In the USA

  • GMP Certified

  • Vegan Friendly

CONS

  • Low Quality Magnesium Blend

  • No Glycinate/All Oxide

  • Short Return Policy

  • Outsourced Customer Service

The Bottom Line

This is one of the best-selling supplement brands overall. Their magnesium caps have a blend of 3 magnesium types because this is cheaper than pure glycinate.

It is mostly magnesium oxide which is not very absorbable and very cheap. These low-end magnesium salts pass through the body with minimal absorption. This option is better than nothing, and the brand has been around for a while.

Price starts at $29.99

2025's Best Magnesium Supplement

Based on 4.7 Average Reviews

Pure Magnesium Glycinate

by Organics Ocean

  • Trademarked Magnesium Glycinate

  • Heavy Metal Compliant

  • Maximum Strength 275mg

  • Third Party Tested Twice

  • 90 Day Guarantee

  • Confirmed GMP Certified

References:

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