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Best Magnesium Supplements of 2021

How important is magnesium? Learn all about this vital mineral, plus what to look for in a top-notch supplement.

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It's impossible for humans to be in several places at once, but for an essential nutrient like magnesium, it’s a job requirement. 

At the cellular level, magnesium is involved in carrying out hundreds of different processes simultaneously throughout our bodies. In fact, without it, our bodies would completely shut down

That’s why it’s shocking to discover an estimated 50% of all Americans don't get enough of this mega-important mineral.1 Inadequate magnesium levels can spell trouble for some of your body’s most vital systems, including immune functionbone health, and even stress

Fortunately, taking a magnesium supplement can help replenish your body's magnesium levels and keep them from falling to dangerous lows. 

Benefits of Taking Magnesium

Healthy Bones

Magnesium is essential to bone formation and density, especially as we age. It also helps regulate the distribution of important bone-building nutrients like calcium and vitamin D.2

Heart Support

One of magnesium's most important functions is helping the heart maintain a healthy rhythm. It also helps maintain blood pressure and healthy cholesterol levels.3

Fortified Immune Health

Studies have shown that magnesium plays a pivotal role in maintaining intracellular health and helps stimulate the production of antibodies to ward off harmful pathogens.4

Stress, Sleep, and Mood

Magnesium isn't just good for your physical health; it's essential for your mental wellbeing too. Your stress levels, mood, and sleep quality are all deeply linked to magnesium. 

For example, magnesium helps regulate our stress-response systems — one of the reasons people with low magnesium often report experiencing heightened stress. It also increases levels of GABAa neurochemical that encourages deep sleep and relaxation. 

Studies conducted with supplemental magnesium show a positive correlation with improved sleep, reduced stress, and greater calm.5, 6

Keep in mind, not all magnesium supplements are created equal. Different brands use different components, and some formulas are simply going to be more effective than others. 

At Smarter Reviews, we've analyzed some of the top-selling magnesium supplements on the market to help guide you in the right direction. We'll show you what to look for and what to avoid in a high-quality supplement, plus, we share our top 5 picks of the year. 

Your Complete Magnesium Checklist

Contains Zinc & Vitamin D3

Zinc helps your body absorb magnesium more efficiently and contributes to a healthy immune system. (*Too much zinc can hinder the absorption of other vital nutrients, so if you're taking multiple supplements with zinc, try not to exceed 40 mg/day).7

Magnesium and vitamin D3 work to each other's advantage to promote healthy bones. Additionally, vitamin D3 helps direct calcium towards your bones where it's needed, and away from soft tissues like your arteries, where it can do harm.8

Magnesium Glycinate

Glycine is an amino acid that's combined with magnesium to make it easier to absorb. Like magnesium, glycine facilitates the release of GABA, making magnesium glycinate ideal for sleep and relaxation.9

Magnesium Citrate

Magnesium citrate is considered to be the most highly bioavailable type of magnesium, as it can pass through the most volatile parts of the gut with ease. Citrate is also beneficial for digestive regulation

Magnesium Malate

In addition to being highly bioavailable, magnesium malate is also prized for its antacid properties. 10

What To Avoid In A Magnesium Supplement:

Magnesium Oxide

Magnesium oxide is the most poorly absorbed form of chelated magnesium since it's nearly insoluble in water.11

Added Calcium

Be wary of taking a supplement that contains both magnesium and calcium, especially if you already take supplemental calcium. At high doses, these two minerals often compete for absorption.12

Fillers and Additives

Avoid supplements that use fillers and additives like magnesium stearate and soy, as they may lead to allergic reactions.

Top 5 Magnesium Supplements Of 2021

We've compiled a list of what we've found to be the top five products in this category on the market today.

1. MagWell®

Total Ranking

9.8/10

A+

Overall Grade

PROS

  • Magnesium blend 
  • Zinc & vitamin D3
  • GMP compliant 
  • Non-GMO
  • 365-day money-back guarantee

CONS

  • Sold exclusively online
The Bottom Line

MagWell uses three types of highly bioavailable magnesium, including magnesium glycinate, magnesium citrate, and magnesium malate

It also contains zinc and vitamin D3 to maximize absorption. Both zinc and vitamin D3 also play pivotal roles in supporting bone, heart, immune, and brain health

Consumers will also be pleased to know that Live Conscious manufacturers all of their products in GMP-compliant facilities. To top things off, they back all of their products with a 365-day return policy, no questions asked. 

*Results are based on the Smarter Reviews Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.

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2. Magnesium + Zinc

Total Ranking

9.5/10

A

Overall Grade

PROS

  • Magnesium blend (225 mg)
  • Zinc & vitamin D3
  • GMP-compliant
  • Non-GMO 
  • 365-day return policy 

CONS

  • Sold exclusively online
  • New to the market
The Bottom Line

Essential Elements' Magnesium + Zinc is another example of magnesium supplement done right. 

Like our top pick, Magnesium + Zinc is formulated with magnesium malate, citrate, and glycinate, as well as zinc, and vitamin D3

Essential Elements makes all of their supplements in GMP-compliant facilities, and backs all of their products with a 365-day return policy

*Results are based on the Smarter Reviews Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.

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3. MagMD® Plus

Total Ranking

9.1/10

A-

Overall Grade

PROS

  • Magnesium blend (225mg)
  • Zinc & vitamin D3
  • Non-GMO 
  • GMP compliant
  • 90-day return policy

CONS

  • Sold exclusively online
  • Frequently out of stock 
The Bottom Line

MagMD Plus feels like another win for 1MD Nutrition, a company who has garnered a favorable reputation for partnering with industry-leading doctors to create high-quality supplements

Similar to our top two products, MagMD Plus contains a 225mg-magnesium blend, including the 3 potent chelates mentioned above. 

It also contains potent doses of zinc and vitamin D3 to help support the absorption of magnesium, as well as a healthy heart and strong bones. 

Despite it's reputation and high-quality product, MagMD Plus places third on our list since it's still relatively new and hasn't received much customer feedback. On the plus side, if you're not happy with MagMD, you have a full 90 days to return it.   

*Results are based on the Smarter Reviews Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.

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4. Magnesium Caps

Total Ranking

8.9/10

B+

Overall Grade

PROS

  • Magnesium blend (400 mg)
  • Vegetable capsule
  • No additives or fillers

CONS

  • Lacks zinc
  • Lacks vitamin D3
  • 30-day return policy  
The Bottom Line

NOW is one of the biggest names in health supplements and has maintained a loyal customer base over the years. If you're looking for an inexpensive, mid-tier supplement, NOW's Magnesium Caps are a solid choice. 

NOW uses three types of magnesium in their supplement, including citrate. However, if you're looking for either malate or glycinate, you won't find them here. 

Additionally, this formula lacks both zinc and vitamin D3. NOW offers a brief 30-day return window, which came as a surprise considering how big the brand is. 

*Results are based on the Smarter Reviews Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.

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5. Magnesium Complex

Total Ranking

8.5/10

B

Overall Grade

PROS

  • Magnesium blend (500 mg)
  • GMP compliant
  • 365-day return policy

CONS

  • Lacks zinc
  • Lacks vitamin D3 
  • Contains magnesium oxide 
The Bottom Line

What you see is what you get with Sunergetic's Magnesium Complex. It's a decent choice if you're perhaps new to magnesium and shopping on budget. 

Magnesium Complex is manufactured in a GMP-compliant facility and uses a 500mg blend, made with magnesium citrate and oxide. Unfortunately, oxide is one of the weakest forms of magnesium, leaving most of the heavy lifting to citrate. Not surprisingly, it contains neither zinc nor vitamin D3.  

On the upside, Sunergetic offers a 100% satisfaction, 365-day money-back guarantee.  

*Results are based on the Smarter Reviews Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.

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CITATIONS

  1. https://articles.mercola.com/sites/articles/archive/2015/01/19/magnesium-deficiency.aspx
  2. http://getbetterwellness.com/?p=2665
  3. https://medlineplus.gov/ency/article/002423.htm
  4. https://ods.od.nih.gov/factsheets/Magnesium-Consumer/
  5. https://draxe.com/magnesium-supplements/
  6. https://www.healthline.com/nutrition/10-proven-magnesium-benefits#section7
  7. https://www.ncbi.nlm.nih.gov/pubmed/2067759
  8. https://www.medicalnewstoday.com/articles/318716.php
  9. https://www.ncbi.nlm.nih.gov/pubmed/21199787
  10. https://www.livestrong.com/article/547742-can-magnesium-supplements-cause-tiredness/
  11. https://www.healthline.com/health/food-nutrition/is-soy-lecithin-good-or-bad-for-me
  12. https://www.livestrong.com/article/448208-which-form-of-magnesium-is-best-absorbed/