Choosing the Best Magnesium Supplements – Top 10 Brands

Best Magnesium Supplement Brands Ranked

Performance best be described most simply as how well we can do or perform a given task or role. This might be in sports and athletics, in the gym, or simply in our daily lives at work, as a parent, and the many other roles we play every day.

We need certain things in order to perform at our very best, some of which apply only to specific roles or aspects, such as specialized sport supplements to build strength, others apply all of us for our overall health, wellbeing and performance. This might include exercise, sleep, macronutrients, water, vitamins and minerals.

One of the primary elements, a mineral, that we need to consume in adequate amounts every day is magnesium. While magnesium may not have been as well-known or popularized as more well-known performance enhancers like vitamin C, protein, or caffeine, it is a vital component for our general health and performance that is often overlooked.

What is Magnesium?

Magnesium is a naturally occurring mineral that is often found in healthy foods such as dark, leafy greens (spinach anyone?), however we often don’t get enough of those in our diet. The typical Western diet lacks much of the natural, healthy foods that would deliver our recommended daily allowance (RDA) for magnesium. Additionally, due to complex biological factors many of these foods that do contain magnesium are not as potent as they once were, thus the shortage for much of the general population in this vital mineral, and the need for a supplemental dose.

Magnesium supplements are not nearly as complicated as other blends tend to be, it is simply a concentrated dose in a capsule or powder form. Taking even one small capsule every day can make huge impacts for our health and performance as magnesium affects hundreds of different biological processes in our bodies.

What Is Its Biological Role?

Magnesium [2] is an incredibly important mineral for our health. It is a cofactor in over 300 biochemical reactions in our bodies. A cofactor is a component (in this case, the mineral magnesium) that is absolutely required in order for a given reaction to occur. For example, the body needs magnesium to synthesize ATP. A

TP, which stands for adenosine triphosphate, is one of the most basic units of energy flowing through our bodies. Magnesium also helps calcium to function properly when strengthening bones, makes the body’s muscle repair systems function properly, encourages healthy sleep patterns by assisting in the body’s regulation of melatonin (a hormone produced by the body that encourages sleep), and even plays a role in relieving issues like dehydration and constipation.

In addition to its role in strengthening muscles by stimulating the body’s production of certain growth factors, magnesium is also necessary to stop the contraction of muscles, and normalize the body’s pH balance. These effects keep our muscles from cramping and prevent a buildup of lactic acid, the substance that makes our muscles tender and sore after repeated use.

Sources of Magnesium

Magnesium is naturally found in food items and supplements. Magnesium is usually found in dark leafy greens, like kale and spinach, seeds and nuts, fish, bananas, whole grains, dairy, and more. A person who eats healthy diet that consists of lots of vegetables, it is a good chance that they get their share of magnesium.

People who don’t prefer the greens are more prone to magnesium deficiency. As per the findings of USDA, it is seen that 57% of the American population do not get their share of magnesium. A person depriving himself of a macronutrient like magnesium is prone to a plethora of health issues.

On the flipside, over the years due to crop cycling and excessive farming, the mineral content of the soils around the world has diminished considerably. It resulted in the production of food crops with minimal nutrient value. Consuming such nutrient deficit food items would result in similar situations of magnesium deficiency in the population!

What Foods Contain Magnesium?

Magnesium is particularly common in foods that contain a lot of fiber. Some examples of magnesium-rich foods include: black beans, spinach, almonds, soymilk, and some cereals.

Benefits of Magnesium

Magnesium has a host of health benefits in a variety of ways, including aiding in nerve and muscle function, keeping the immune system at full capacity and even helping to regulate heart rate. In addition, there is new research that Magnesium may play a part in preventing issues related to high blood pressure and disease. It is considered one of the primary ions in the body and one of our most important compounds. Magnesium is commonly found both in vegetables like spinach, and in healthy nuts like walnuts, for example. Perhaps just as striking as the health benefits of magnesium is the common cases of severe magnesium deficiency, which has been linked to heart disease, diabetes, high blood pressure and headaches.

Who Is Magnesium Best Suited For?

In short, just about everyone who doesn’t get enough Magnesium in their regular diet. While as a generality this probably includes most of us, it would specifically apply to those who are especially active and thus require more nutrients, such as athletes or gym enthusiasts, and those who do not get much naturally occurring magnesium in their diet, for example someone who gets very little vegetables on a daily basis.

How Does It Help Bodybuilders and People Who Work Out?

A few of magnesium’s benefits should be of particular interest to fitness enthusiasts. It helps to keep you hydrated, an important element of health recognized by bodybuilders and marathon runners alike.

It also work to prevent muscle cramps, which enables you to work out longer without having a painful muscle cramp and throwing a wrench into your routine. Even after the workout, magnesium helps to normalize your body’s pH levels which prevents an overabundance of lactic acid.

Lactic acid is responsible for the pain and sensitivity in your muscles after a workout; avoiding these unpleasant symptoms will allow you to more fully enjoy your workout and not have to take rest days as frequently because your muscles will be able to heal properly.

How Much Magnesium Do You Need?

The recommended daily allowance for magnesium [3] in infants is 30mg. The dosage increases as you age, and once you pass the age of puberty it also varies depending on sex. For adults aged 19 years and older, the recommended daily allowance is 400mg for men and 310mg for women.

Women who are pregnant or breastfeeding are generally recommended to increase their intake slightly during this time, aiming to stay in a range of 320mg to 360mg per day.

Dosage and Use of Magnesium and Potential Side Effects

As with any supplement or health-related product, it is always advised to consult with a medical professional on if it is the right choice for you, and it is also always advised to follow the recommended dosing strategy by the product.

When taking a magnesium supplement, if the dosage and/or overall consumption is less than 400mg, there are no side effects generally speaking. However, once you begin to increase dosage amounts beyond that level, you may begin to see possible side effects such as diarrhea, nausea or vomiting, and an upset stomach. These are essentially your body’s way of telling you you’ve had too much and it doesn’t need the excess.

If you are unsure what the proper dosage is, consult with your medical professional and check the product packaging for the RDA (recommended dietary allowance) as well. The RDA will vary depending on age, gender and in general your activity level as well.

Are There Risks Associated With Consuming Too Much Of It?

Normally it is difficult to put your body in a state of magnesium toxicity. This is because your kidneys are typically very efficient at ridding your body of excess magnesium before it has time affect you.

However, individuals may experience magnesium toxicity if they have compromised kidney function for any reason, and then take medications containing magnesium or magnesium supplements. Major examples of medications containing magnesium are antacids and laxatives.

Symptoms of magnesium toxicity include irregular heartbeat, muscle weakness, nausea, low blood pressure, and potentially fatal symptoms such as respiratory distress and cardiac arrest.

Are There Risks Associated With Consuming Too Little Of It?

Magnesium deficiency can be quite serious, depending on how long you remain deficient. This is because of the wide array of functions for which the body requires magnesium to be present. Symptoms of a generalized deficiency include: tooth decay, fatigue, changes in mood such as depression or anxiety, constipation, muscle cramping or pain, and loss of bone density.

If this deficiency goes untreated it can lead to more serious symptoms such as worsening of anxiety or depression symptoms, numbness or tingling, and extreme muscle cramps that can lead to irregular heartbeat or spasms of the heart. Extreme deficiency also puts you at risk for seizures.

Many doctors are starting to present research that suggests that magnesium is responsible for even more bodily functions than are listed here, and that most of us do not truly get as much as we need.

Luckily, as long as you have healthy kidneys and don’t overdo it, choosing to supplement with magnesium if you worry you’re not getting enough from your diet can be a good option. This macro-mineral truly is a powerhouse in terms of keeping us healthy.

How to Pick a Good Magnesium Supplement

Most magnesium products will have little variability in their ingredients, generally it will just be magnesium, therefore you’ll have to identify which version of magnesium is the right choice for you and look for that option. Magnesium comes in capsule forms, powders to mix with drinks, drops and more. It is also often combined with other minerals which is a factor consider.

Be sure when selecting a product to review any additional ingredients aside from magnesium, such as additional supplements, fillers, artificial additives etc. as these may carry their own side effects or dilute the quality of the product.

Finally, as with any good product decision, look for reputable brands that are backed by strong scientific backgrounds, as well as offering a strong value. A good rule of thumb in terms of comparing price and value is to evaluate the price per dose rather than overall dose, as most products will have varying sizes.

Health supplements are a multi-billion dollar industry and for this particular reason, the market is flooded with health supplement products.

Sumarry (Look for:)

  • Type of Magnesium
  • Other Active Ingredients
  • Brand quality/Reputation
  • Cost Per Serving
  • Customer Feedback/Reviews

Top 10 Magnesium Products

We have put together a list of our top 10 recommended magnesium supplements. Each one has a short breakdown of its highlights, primary ingredients and usages, as well as a brief profile for the company who makes the product.

Check out all 10, and look for the best option that not only comes highly recommended but fits your individual needs and desires for a magnesium supplement. We hope you enjoy and find the best product for you!

1. NOW Foods Magnesium Caps

Now Foods Magnesium Caps Review

NOW Foods Magnesium Caps are a great brand for magnesium supplements, they come from a highly regarded brand, NOW, and most importantly do not use any additional fillers, glutens, milk etc., making it one of the best possible options for a straight magnesium supplement that gets you what you need without having to worry about any extras.

Product Highlights and Ingredients:

  • 400mg of magnesium per capsule.
  • Has a basic ingredient list with no additional fillers or additives.
  • Very reputable brand and great value for the price.
  • 400mg magnesium blend is comprised of magnesium oxide, magnesium citrate and magnesium aspartate, designed for optimal absorption to maximize the benefits.

Company Profile:

NOW Foods is the maker of this product, and they are considered to be one of the companies in the greater supplement industry. For decades, they have produced products that are very high in quality yet also specialize in simplicity. They have a wealth of products, over 1,000 and are a major player in the industry.

Why We Recommend It:

The NOW Foods magnesium capsules are a great product and one of the best magnesium supplements on the market, containing 100% of the RDA in each serving without any additions or fillers, and at a reasonable price. It is a great value and choice for a magnesium supplement.

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2. Doctor’s Best High Absorption Magnesium

Doctors Best High Absorption Magnesium

The Doctor’s Best High Absorption Magnesium tablets are one of the more unique and innovative options in terms of magnesium supplements. Their primary differentiator is that they use chelated magnesium, a different variation of traditional magnesium supplements that is easier to absorb. In addition, these tablets are not buffered, meaning the magnesium has not been mixed with any additives or lower quality forms of magnesium. This is a premium product and is priced accordingly, but it is hard to find a more quality product for magnesium.

Product Highlights and Ingredients:

  • 200mg of magnesium in each serving of 2 tablets.
  • Chelated rather than buffered for improved absorption and potency.
  • Vegan, gluten free and non-GMO
  • Uses magnesium glycinate for better absorption and to combat magnesium deficiency.

Company Profile:

Doctor’s Best was founded by physicians in 1990 and have since expanded to offering over 200 different products to their customers. They specialize in using science-based nutrition practices to create their products and serve innovative and effective supplements to consumers.

Why We Recommend It:

The Doctor’s Best magnesium tabs are one of the highest-quality products on the market, though they are priced a bit higher than most as well. Due to their higher quality magnesium and their excellent absorption they are a great product especially if finding the highest quality magnesium is a priority for you.

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3. Twinlab Magnesium Caps

Olympian Labs Magnesium Citrate

Twinlab Magnesium Caps are a simple yet effective supplement that will get the job done without any extra’s and at an excellent value. They offer the RDA of 400mg per serving in each capsule, making it an easy and convenient way to make sure you are reaching the appropriate levels of magnesium.

Product Highlights and Ingredients:

  • Delivers 400mg per serving of magnesium in each capsule.
  • All natural and high potency.
  • No artificial fillers or unnecessary ingredients.
  • Excellent value and one of the most inexpensive options available.
  • Uses 400mg magnesium oxide for its primary ingredient.

Company Profile:

Based in New York, Twinlab is one of the elder statesman of the supplement industry, having started over 50 years in 1968. They are dedicated producing high quality supplements for the fitness and health industry and consumers with over 500 products!

Why We Recommend It:

Twinlab Magnesium Caps are an effective, simple product made by a well-known and reputable brand. If your priorities in finding the right magnesium supplement for you are convenience, simplicity and affordability then Twinlabs may be a great choice!

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4. Natural Vitality Natural Calm

Natural Vitality Natural Calm

Natural Vitality Natural Calm is in fact a magnesium supplement in liquid rather than in capsule form. At 325mg of magnesium in each serving it still packs a potent dose and is an all organic product, making it a great product that delivers pure magnesium with no fillers.

Product Highlights and Ingredients:

  • Has 325mg of magnesium per serving.
  • Comes in liquid form, and sports a raspberry lemon flavor.
  • Delivers a quality value and convenience with the ability to customize the dosage.
  • Is organic, vegan, all-natural, non-GMO and gluten free for a truly healthy product.
  • 325mg magnesium, as ionic magnesium citrate, a highly absorbable form of magnesium.
  • Has organic raspberry, lemon flavors with organic stevia.

Company Profile:

Founded in 1982 in Austin, Texas, Natural Vitality is a supplement company that specializes in using simple, earth-grown ingredients for powerful, quality products. They especially focus on helping customers handle their stress and aim to help create “calmfullness” for customers though their products.

Why We Recommend It:

The Natural Vitality Natural Calm magnesium supplement is a great product and unique in that it does not come in the standard capsule form. The liquid format allows users the ability to customize their dose more effectively and is easily absorbable, making it a great product and value.

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5. NOW Foods Calcium & Magnesium

Now Foods Calcium Magnesium

This is a unique supplement from NOW Foods that combines both magnesium and calcium into one supplement. This creates a more efficient supplement strategy, especially if you tend to run low on both of these vital nutrients. Calcium and magnesium are two vital minerals and often are taken together, and with this particular supplement it delivers a potent dose of both with the efficiency of an all-in-one capsule.

Product Highlights and Ingredients:

  • Uses both magnesium and calcium in each dose.
  • Each serving contains 500mg of magnesium and 1000mg of calcium.
  • 500mg magnesium is 80% oxide, 10% citrate, and 10% amino acid chelate.
  • 1000mg calcium is 80% carbonate, 10% citrate, and also 10% amino acid chelate.
  • Offers great value for the two minerals.
  • Not an ideal option if you do not need extra calcium in your diet.

Company Profile:

NOW Foods is the maker of this product, and they are considered to be one of the companies in the greater supplement industry. For decades, they have produced products that are very high in quality yet also specialize in simplicity. They have a wealth of products, over 1,000 and are a major player in the industry.

Why We Recommend It:

The NOW Foods combined magnesium and calcium capsules are a fantastic method of getting two vital minerals in one dose for a more efficient approach. This is a great value if you need both minerals, though if you only require supplementation in one of them aside from your general diet then it is not the best choice.

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6. Trace Minerals ConcenTrace Mineral Drops

Trace Minerals Concentrace Mineral Drops

These mineral drops are one of the most unique options on this list as they come straight from the Great Salt Lake in Utah. Trace Minerals extracts minerals from the lake and creates a powerful magnesium liquid supplement that also includes traces of other key minerals, making it an innovative, all-natural option.

Product Highlights and Ingredients:

  • 250mg of magnesium in each serving.
  • Extracted from the Great Salt Lake in Utah
  • All-natural with no additives or fillers.
  • Liquid formula allows for customization of dosage.
  • Also contains 650mg chloride.
  • In addition, has trace amounts of sodium, potassium, sulfate, lithium, boron and 65+ other trace minerals.

Company Profile:

Trace Minerals Research has been the supplement industry for 35 years, more specifically with a focus on creating mineral supplements. They have grown by leaps and bounds recently by offering all-natural mineral products (over 100) to their customers.

Why We Recommend It:

This is one of the more unique products on the market for magnesium and is certainly one of the most natural, coming straight from the waters of the Great Salt Lake. In addition, the liquid dosage offers the ability to customize the dose which makes it a more convenient option for those who want more flexibility in that regard.

7. Country Life Calcium Magnesium Potassium

Country Life Calcium Magnesium Potassium

This is an effective supplement from Country Life that aims to cover your key mineral needs in one shot. Many people are deficient in all three of these vital minerals, and with calcium, magnesium and potassium all in one this is one of the most effective and efficient ways to cover your nutritional mineral needs.

Product Highlights and Ingredients:

  • 500mg of magnesium
  • 500mg calcium
  • 250mg phosphorus
  • 99mg potassium
  • Offers great value for the amount of minerals provided.
  • May not be the best option if you exclusively just need magnesium.

Company Profile:

Country Life has been in the supplement and nutrition industry for over 40 years, dating back to their founding in 1971 in New York. They pride themselves on integrity, authenticity, cleanliness, freshness, consistency and accuracy. Over their time in business they have consistently delivered quality products and supplemented those with excellent customer service and thus have developed a strong brand and reputation within the industry.

Why We Recommend It:

This is a fantastic option to cover three key mineral bases that many people are deficient in with their regular diet. If your diet and a standard multivitamin don’t deliver enough calcium, potassium and magnesium then this is an ideal option. If you are looking for only one mineral specifically then it may not be ideal in that scenario.

8. Source Naturals Ultra-Mag

Source Naturals Ultra Mag

The Source Naturals Ultra-Mag capsules are one of the stronger magnesium supplements on the market providing the RDA within each serving. They also incorporate a unique blend of several different types of magnesium which aids in absorption and bioavailability. Finally, this product also includes vitamin B6 for an additional boost and benefit.

Product Highlights and Ingredients:

  • 400mg of magnesium per serving, filling the RDA in each serving.
  • Additional 50mg of vitamin B6.
  • Uses a unique blend of magnesium that makes it more bioavailable and improves absorption, comprised of magnesium citrate, taurinate, malate, glycinate and succinate.
  • Offers good value from a well-respected brand.

Company Profile:

Source Naturals is one of the larger supplement companies and manufacturers and have been in business since 1982. They offer a wide-range of products for customer and consumers, with a specific ability to meet the needs of the health-conscious demographic. They have been in business for several decades and have grown into a well-respected and established brand.

Why We Recommend It:

This is a premium product and is priced as so, that being said it offers a unique blend of highly absorbable magnesium along with vitamin B6 for a potent dose in each serving. If you do not need vitamin B6 that aspect may not have much benefit for you, but overall it is a great product if you need both.

9. Olympian Labs Magnesium Citrate

Olympian Labs Magnesium Citrate

These magnesium capsules courtesy of Olympian Labs utilize the citrate form of magnesium, making it highly bioavailable and delivering a product that absorbs more completely than most making it highly effective, yet at the same time it is easy on the stomach and tends to minimize any potential disruptive side effects. With 400mg of magnesium per serving it satisfies the RDA and is a great option for getting a strict magnesium supplement.

Product Highlights and Ingredients:

  • 400mg of magnesium citrate in each serving.
  • Magnesium citrate is highly absorbable and easier on the stomach than other forms of the mineral.
  • Serving size is 3 capsules.
  • This is a premium product and is more expensive than the average magnesium supplement.

Company Profile:

Olympian Labs is based in Arizona and has been manufacturing supplements since 1992. They have grown exponentially over the last 25 years by offering a wide variety of health products that help their customers improve their health and wellness. Their mission is to help people achieve optimal health, wellbeing and balance in their lives.

Why We Recommend It:

This product is an excellent option if you know exactly what type of magnesium you are looking for, in this case magnesium citrate, and want a high-quality form without additional minerals or other extras tossed in. It is a bulky serving size and a bit more expensive than most but it delivers a quality product.

10. NOW Foods Liquid Cal-Mag

Now Foods Liquid Cal Mag

NOW Foods, one of the strongest brands in the supplement, vitamin and mineral market, is the creator of this liquid form of magnesium and calcium. Cal-Mag offers 250mg of magnesium, 500mg of calcium and several additional vitamins and minerals for a powerful dose of two key nutrients. In addition, the liquid form gives consumers the ability or option ot customize their dose according to their needs.

Product Highlights and Ingredients:

  • 250mg magnesium (magnesium citrate form)
  • 500mg calcium (calcium citrate form)
  • 1mg boron
  • 400 iu vitamin D
  • Liquid formula provides improved absorption and customizable dosage.
  • More expensive than most
  • Strong and reputable brand.

Company Profile:

NOW Foods is the maker of this product, and they are considered to be one of the companies in the greater supplement industry. For decades, they have produced products that are very high in quality yet also specialize in simplicity. They have a wealth of products, over 1,000 and are a major player in the industry.

Why We Recommend It:

This is a great product for covering both of these mineral bases plus some other key items such as vitamin D in a convenient liquid form for easy customization of the dosage. In addition, it comes from a strong and respected brand in NOW Foods. It is one of the more expensive products and if you prefer capsules or powders to the liquid form it will not be as convenient.


[1] Reference. What Are Macrominerals?., 2016.

[2] WebMD. Magnesium: Uses, Side Effects, Interactions and Warnings., 2016.

[3] Office Of Dietary Supplements, National Institute of Health. Magnesium-Consumer Fact Sheet. US Department of Health and Human Services, 2016.

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Carl Putman

Written by Carl Putman

Carl Putman is a strength and conditioning coach at the collegiate level and writer on fitness, health and supplements. Over the past decade, he has worked with a wide variety of clients ranging from professional athletes and world champions to youth and general population, as well as tactical practitioners. He is currently pursuing a Masters degree in Organizational Leadership. Based in Florida, he continues to train and coach as well as write with a passion for making a positive impact for his clients and readers.