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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 (225 mg): malate, citrate, glycinate
  • Zinc (7.5 mg)
  • Vitamin D3 (25 mcg)
  • Third-party tested
  • Free of additives and fillers 
  • Non-GMO
  • 365-day money-back guarantee

CONS

  • Exclusively sold online
The Bottom Line

MagWell utilizes 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

Each batch of MagWell is third-party tested for purity and potency, free of additives and fillers, and 100% non-GMO

Consumers will also be pleased to know that Live Conscious offers a 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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2. Magnesium + Zinc

Total Ranking

9.5/10

A

Overall Grade

PROS

  • Magnesium blend (225 mg): malate, glycinate, citrate
  • Zinc (7.5 mg)
  • Vitamin D3 (25 mcg)
  • Free of additives and fillers
  • Third-party tested 
  • Non-GMO 
  • 365-day return policy 

CONS

  • Exclusively sold 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. It's also third-party testedfree of additives and fillers, and completely non-GMO.

Essential elements backs all their products with a comprehensive 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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3. Magnesium Breakthrough

Total Ranking

9.1/10

A-

Overall Grade

PROS

  • Magnesium blend (500 mg): chelate, bisglycinate, aspartate, malate, orotate, taurate, citrate
  • No additives or fillers
  • GMP compliant
  • Conditional 365-day return policy

CONS

  • Lacks zinc
  • Lacks vitamin D3
  • May be out of stock 
The Bottom Line

Magnesium Breakthrough by BiOptimizers has a lot going for it: namely, it includes a whopping 7 types of magnesium, including 2 from our list. 

Breakthrough's formula is made with natural ingredients, free of additives and fillers, and includes vitamin B6 to aid with absorption. It's also GMP (Good Manufacturing Practices) certified. 

While there's a lot to like about this formula, there are a couple criteria preventing it from reaching the top of our list. Most notably, Breakthrough lacks zinc and vitamin D3. Additionally, it's missing one of the most important types of magnesium for sleep and relaxation: magnesium malate.

BiOptimizers offers a 365-day return policy, as long as your bottle remains unopened.   

*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): 

    oxidecitrateaspartate
  • 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, but if you're looking for either malate or glycinate, you won't find them here. 

Additionally, Magnesium Caps lack both zinc and vitamin D3 and only offer a 30-day return policy, which is especially low for a supplement. 

*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): citrate and oxide
  • GMP certified
  • 365-day return policy

CONS

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

What you see is what you get with Sunergetic's Magnesium Complex. Each serving contains 500 mg of magnesium citrate and oxide, resulting in a solid, run-of-the-mill magnesium supplement. 

Where it falls short: its formula lacks zinc and vitamin D3 and includes just 2 types of magnesium. Additionally, it contains the binding agent, magnesium stearate

Where it shines: It includes a hefty 500 mg of magnesium, plus, Sunergetic offers a 100% satisfaction, 365-day money-back guarantee, which shows us they're confident in their magnesium complex.  

*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/