Best Magnesium Supplements Ranked for 2018 – Top 10 Brands


Jump Ahead to the Best Magnesium Products

It may be obvious, but there are many key aspects to overall health, but one of the most important is proper nutrition. Our bodies need certain vitamins, minerals and other nutrients on a daily basis in order to function properly. Some of these nutrients are absolutely essential – meaning that they are needed in order for our bodies to function properly. Some nutrients are not essential, but can be highly beneficial, and others are not generally needed for most people. All these nutrients come together to make up the scope of overall nutrition.

There’s a lot going on in the human body at any given minute, and it would take a degree in biology to fully understand all the key processes that go on constantly. For the average person, all that you really need to know is that there are certain nutrients that you need to make sure you consume enough of.

Vitamins are obviously important, which is why most health professionals recommend that you take a daily multivitamin. Also, of key importance are minerals. Today, we’re here to talk about magnesium, a mineral which plays a number of very important roles in the human body. Magnesium is one of those nutrients that is absolutely essential to proper health and normal bodily functions. Let’s dive right in and learn all about magnesium benefits, the dangers of magnesium deficiency, good sources of magnesium, and more!

What Is Magnesium?

Magnesium is a mineral that plays a number of important roles in the human body. It’s a vital component of proper bone health and structure, heart health, circulatory health, and much more. Magnesium plays a key role in energy production, supports the immune system, regulates blood glucose levels, and more.

In fact, magnesium is involved in more than 300 biochemical processes in the body. It plays a key role in a wide variety of reactions and natural processes within the human body, and without it, our bodies simply would not function properly.

Sources of Magnesium

Magnesium is found naturally in foods, and is also available in supplement form. Some common foods with magnesium include dark leafy greens, like spinach and kale, nuts and seeds, fish, whole grains, bananas, dairy, and more. If you eat a healthy, balanced diet there’s a good chance that you get enough magnesium on a regular basis from foods alone.

However, many people simply do not consume enough of these healthy foods in order to get enough magnesium in their diets. The USDA estimates that 57% of Americans do not consume enough magnesium. This deficit off a such a key nutrient can lead to magnesium deficiency, which can cause all sorts of health problems.

And in fact, even if you do eat a healthy diet, you still may not get enough of this mineral. Over the years, magnesium and other minerals have been diminished from the soils we use to grow our crops, which leads to lower and lower mineral consumption amongst people – even those who eat a lot of veggies.

To help fight against these negative health effects of magnesium deficiency, many people take magnesium supplements to help increase their intake. Which leads us to our next section!

What Are Magnesium Supplements?

Simply put, magnesium supplements are health products that contain concentrated doses of magnesium in pill or capsule form (or sometimes magnesium powder). They provide an easy way to increase your daily consumption and help fight the low magnesium symptoms that many people suffer from.

You probably already take a daily multivitamin, which likely does contain some magnesium. However, most multivitamins don’t contain enough magnesium to meet the recommended daily intake, which ranges from 310mg to 420mg for adults, depending on age and sex.

As we said before, the USDA estimates 57% of Americans to have magnesium deficiency, while some estimates put that number as high as 80%. If you’re concerned that you’re part of the majority, using a good magnesium supplement can help you get your health back on track.

It’s wise to speak to your doctor before beginning any new supplement or medication. With that being said, magnesium is relatively harmless as long as you take the recommended dose and no more. It’s also important to note that not all of these products are equal – some are strong magnesium supplements with high doses, some offer lower doses, and some are just not as high quality as others and should be avoided.

Benefits of Magnesium

The list of magnesium benefits is quite long. Magnesium has been the subject of medical and scientific studies, and the benefits are plenty.

With that being said, different people will experience different effects from these supplements. Those who are notably deficient will experience the most positive effects, while those who get enough magnesium in their diets may not notice any difference at all.

Who Can Benefit from Taking Magnesium?

Anyone who does not get enough of this mineral in their diet can experience benefits. Somewhere between 57% and 80% of Americans have a magnesium deficiency, so frankly, the majority of people can benefit from taking a supplement. With that being said, here are the groups of people that will notice the most changes:

  • Anyone with magnesium deficiency – a deficiency in this key nutrient is more common than you’d think, with at least 57% of Americans not getting enough on a daily basis. In fact, even if you eat a healthy diet and take a multivitamin, you’re still at risk for deficiency and the low magnesium symptoms that come with it. And even if you DO consume a decent amount of magnesium, you still may be at risk if you drink caffeinated beverages, eat sugar, or are affected by stress, as these factors can actually cause magnesium stores in your body to be depleted more rapidly.
  • Athletes and fitness enthusiasts – during exercise, your body needs 10-20% more magnesium compared to resting periods. This means that people who exercise often will need more magnesium than the average person. Plus, this mineral has actually been shown to boost exercise performance, with many studies showing promising results. Not to mention, magnesium also helps move blood sugar into your muscles, which in turn can help dispose of lactic acid buildup. Bottom line, if you’re an athlete or someone who exercises on a regular basis, you should be taking an effective magnesium supplement.
  • Those with high blood pressure – magnesium can help lower blood pressure, without the use of pharmaceuticals that can have serious side effects. With that being said, if you have high blood pressure you should absolutely be talking to your doctor about it – magnesium supplements are not a magic fix, but they certainly can help.
  • Aging individuals – aging is a natural process, but that doesn’t mean it’s easy! As our bodies age, we go through many changes, some of which can be unpleasant. In clinical trials, magnesium has been shown to improve physical performance in elderly people, and it provides powerful anti inflammatory effects. Several studies have also shown an ability to improve sleep quality and lower inflammation in elderly folks.
  • Migraine sufferers – if you suffer from migraines, you don’t need me to tell you how unpleasant they can be. Studies have shown that magnesium deficiency has been linked to a higher rate of migraines in otherwise healthy individuals, while other studies have shown that top magnesium supplements can be effective for the treatment of migraines.
  • Women of childbearing age – if you are a woman of childbearing age, chances are you’re familiar with the effects of PMS. In several studies, magnesium has been shown to improve mood, reduce water retention, and combat many of the unpleasant effects of PMS.
  • Those with type 2 diabetes or insulin resistance – If you have been diagnosed with type 2 diabetes (or you’re at risk), you should speak to your doctor about taking some good magnesium pills. Magnesium helps to improve insulin’s ability to keep blood sugar levels normal. Additionally, magnesium has proven effective at improving insulin resistance in both people with diabetes and people at risk for.

Clearly, a lot of folks can experience some very noteworthy benefits from these simple and effective health products. As with anything, we recommend you speak to your doctor before beginning any new supplement.

Are There Any Side Effects?

Generally speaking, the best magnesium supplements won’t cause many side effects, so long as you take them as instructed and don’t take more than the recommended dosage.

When taking in amounts of ~400mg or less, magnesium is very safe and shouldn’t cause any negative effects. With that being said, everyone reacts differently to supplements, and some people have reported the following side effects of magnesium:

  • Upset stomach
  • Nausea/vomiting
  • Diarrhea

If you find that you experience any of these side effects, it would be wise to speak with your doctor to ensure that the supplement is not reacting negatively with other medications or supplements you may be taking. Also, sometimes cutting your dose in half can help, or taking the supplement with a meal to reduce stomach discomfort.

As always, more severe side effects are possible if you take too much. The most you should consume in a dose is 400mg. Anything more than that and you should speak to your doctor before proceeding. In fact, it’s a good idea to talk to your doctor anyways, before you begin taking any supplement.

How to Take Magnesium

As for magnesium dosage, the recommended amount varies depending on your sex and age. Check the official RDAs for magnesium here.

In general, for healthy adults the recommendation is between 310 and 420 mg per day. Males tend to need more than females, although females will need to increase intake during pregnancy and lactation.

Now, keep in mind that you likely already get some naturally – sources of magnesium include foods from your diet and/or from your multivitamin. Many multivitamins will contain around 100mg of magnesium, which is about ¼ of the recommended daily amount.

As for when to take it, magnesium is best taken on its own, ideally in between meals and not taken with other vitamins. Magnesium requires some stomach acid to absorb properly, so if you take it with a meal you may not benefit from ideal absorption. With that being said, some people experience minor stomach discomfort when they take supplements on an empty stomach. If that happens to you, taking your pill at mealtime will not significantly affect the benefits of the supplement.

Additionally, magnesium can compete for absorption with other minerals and vitamins, which can lead to lower overall absorption rates. For that reason, it’s best to take your dose at a different time than you take other vitamins and mineral supplements.

You should always take the recommended dose, or less, and not take more than that unless instructed by your doctor. Generally speaking, top magnesium pills are quite safe and shouldn’t cause any adverse effects, but still, it’s wise to to follow magnesium dosage recommendations closely.

What to Look for in a Good Magnesium Product

As with most products nowadays, there are tons of choices when it comes to selecting the best magnesium supplement for you. To help you choose, we’ve constructed a list of the top 10 magnesium supplements available today. We’ve also compiled some helpful tips on how to choose the right product for you:

  • Amount of magnesium – first things first, take a look at the ingredients label and see how much is included in each serving. Typically, amounts will range from 200 to 400mg. 400mg is at the upper end of the recommended intake levels, so if you’re wanting to start slow with a smaller dose you may want to consider a lower magnesium dosage product. With that being said, you’ll also want to keep in mind the cost of each product and how it relates to the amount of the mineral.
  • Type(s) of magnesium – there are several different types of magnesium used in these products. Magnesium oxide, magnesium citrate, magnesium glycinate, and many more. While all of these types offer the same main perk – more magnesium in your system – they work slightly differently and absorb at different rates. You can read more about the different types here.
  • Other ingredients – some powerful magnesium supplements also contain other minerals and vitamins, such as calcium, potassium, and more. These extra ingredients may or may not be necessary for you, depending on your situation.
  • Brand quality – who makes the product? What is their reputation? Are they a large, reputable company, or one you’ve never heard of? Our list of top magnesium supplements contains products ONLY from top-notch companies, but if you shop elsewhere on the web or even your local supplement store, be aware that not all companies use the same quality standards or offer the same level of product quality.
  • Value – the last factor of note will be the value presented by the product, generally best calculated as a cost-per-serving figure. You’ll want to find something that fits within your budget, while still being a good quality product. Obviously don’t go for the cheapest option, necessarily, but keep cost in mind as you make your selection.

Top 10 Magnesium Products Compared

Heads up, there are affiliate links in this article, so if you buy something, we get a cut of the sale.

1. NOW Foods Magnesium Caps

NOW Foods Magnesium Caps are among the best magnesium pills out there. Offering 400mg per serving, these simple yet effective supplements offer what they are supposed to, without using any fillers, gluten, milk, soy, wheat, corn or other common allergens. Not to mention, these come from NOW, one of the most highly regarded and well respected names in the business!


  • 400mg magnesium per capsule
  • Fights magnesium deficiency symptoms
  • Simple ingredients, no fillers
  • From one of the best companies in the business
  • Excellent value for money

What’s in it: One serving contains:

  • 400mg magnesium, consisting of magnesium oxide, magnesium citrate and magnesium aspartate. This blend is designed for optimal absorption and beneficial effects.

Who makes it: This product is made by NOW Foods, widely considered to be one of the best companies in the entire supplement industry. NOW has decades of industry experience producing high quality, simple and highly effective products. Today, they produce and distribute over 1,400 products, and have become one of the biggest companies in the industry.

Bottom line: Overall, this is one of the best magnesium supplements available. It contains 100% of the RDA in each serving, and uses no fillers or harmful additives. It’s offered at a very reasonable price, and comes from a highly reputable company. It’s our top recommendation overall.

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Where to Get It

2. Natural Vitality Natural Calm

Natural Vitality Natural Calm is a unique magnesium supplement in liquid form. It offers 325mg of magnesium per serving, with just 2 teaspoons needed for that dosage.


  • 325mg magnesium per serving
  • Liquid form (raspberry lemon flavor)
  • Organic, vegan, all-natural, non-GMO, gluten free
  • Provides all the many health benefits of magnesium
  • Easy to customize dosage
  • Good value

What’s in it: One serving contains:

  • 325mg magnesium (as ionic magnesium citrate). This highly absorbable form of the mineral digests rapidly and completely.
  • Organic raspberry and lemon flavors, and organic stevia.

Who makes it: This product is made by Natural Vitality, a supplement company founded in 1982 and based in Austin, Texas. Natural Vitality uses simple, earth-grown ingredients to create powerful supplements. They mostly focus on products to help people deal with the stresses of modern life, aspiring to provide “calmfullness” to the masses through their innovative products.

Bottom line: Overall, this is an excellent product and a very unique way to get your daily dose of this vital nutrient. It may not be as convenient as taking a pill or capsule, but it tastes great, is easily absorbed, and is quite affordable. It’s also very easy to customize your dose, without having to deal with cutting pills in half or taking more than one serving.

ⓘ If you buy something using the links below, we get a small commission.

Where to Get It

3. Twinlab Magnesium Caps

Twinlab Magnesium Caps are high potency, powerful magnesium supplements. With 400mg per serving, each capsule contains 100% of the recommended daily amount, making this product a very simple and effective way to reach your daily intake goals. And, at less than 10 cents per capsule, this is a very affordable option indeed!


  • 400mg per serving
  • A convenient way to help reach daily magnesium requirements
  • Natural and high potency
  • No fillers or unnecessary ingredients
  • Great value for money
  • Simple and effective

What’s in it: One serving contains:

  • 400mg magnesium (as magnesium oxide)

Who makes it: This product is made by Twinlab, a New York based supplement manufacturer. Founded nearly 50 years ago in 1968, Twinlab is dedicated to producing high quality fitness and health supplements for a variety of customers. Today, they serve health enthusiasts worldwide, and produce more than 500 different products!

Bottom line: Overall, this is a great, simple product that works very well, and is made by a very well known company. If you’re looking for an affordable, effective and convenient product, this may be the best magnesium supplement for your needs.

ⓘ If you buy something using the links below, we get a small commission.

Where to Get It

4. Doctor’s Best High Absorption Magnesium

Doctor’s Best High Absorption Magnesium is a unique and potent product. It uses a unique form of chelated magnesium which is highly available and absorbs more completely than some other forms. This product is NOT buffered, which means it contains only magnesium glycinate that has not been mixed with other cheaper, lesser quality forms of the mineral. This product is a bit more expensive than average, but it’s a best seller for good reason: it works!


  • 200mg magnesium per serving
  • High absorption formula
  • Chelated and not buffered for better absorption
  • Combats magnesium deficiency
  • Vegan, non-GMO, gluten free

What’s in it: One serving contains:

  • 200mg magnesium (as magnesium glycinate, serving size 2 capsules). This highly bioavailable form of magnesium absorbs easily and completely.

Who makes it: This product is made by Doctor’s Best, a supplement manufacturer focused on using science-based nutrition to create innovative and effective products. Founded by physicians in 1990, Doctor’s Best has grown exponentially, today offering customers more than 200 high quality products.

Bottom line: Overall, this is a high quality product that absorbs very well, and therefore lets you experience the most important benefits of this key mineral. It is a bit more expensive than average, but that’s because the form it uses is more expensive than your typical magnesium oxide.

ⓘ If you buy something using the links below, we get a small commission.

Where to Get It

5. NOW Foods Calcium & Magnesium

NOW Foods Calcium & Magnesium is a unique supplement that combines two essential minerals to create optimal results. Calcium and magnesium are often taken together. By combining two of the most needed and most commonly deficient minerals, NOW Foods has created a highly effective supplement.


  • 500mg magnesium & 1000mg calcium per serving
  • Combines two essential minerals
  • The two minerals work synergistically
  • Two products in one
  • Good value

What’s in it:

  • 500mg magnesium (80% oxide, 10% citrate, 10% amino acid chelate)
  • 1000mg calcium (80% carbonate, 10% citrate, 10% amino acid chelate)

Who makes it: This product is made by NOW Foods, one of the best companies in the health industry. They currently offer over 1,400 unique products, ranging from health foods to mineral supplements to fitness supplements and beyond. With decades of experience creating high quality, consistent products, NOW is one of the best in the business!

Bottom line: Overall, if you’re looking for an easy way to ensure you’re getting enough of BOTH calcium and magnesium, this is a great choice. With that being said, you may already get enough calcium in your diet and from your multivitamin.

ⓘ If you buy something using the links below, we get a small commission.

Where to Get It

6. Trace Minerals ConcenTrace Mineral Drops

Trace Minerals ConcenTrace Mineral Drops is a unique and effective magnesium supplement made by extracting minerals from the Great Salt Lake in Utah. This liquid supplement provides 250mg magnesium, plus trace amounts of chloride, sodium, potassium, sulfate, lithium and boron, and 65+ other trace minerals.


  • 250mg magnesium per serving
  • Includes chloride, potassium, calcium and 65+ other trace minerals
  • Extracted naturally from the waters of the Great Salt Lake in Utah
  • A natural way to get minerals in your diet
  • Liquid formula makes customizing dosage easy
  • All natural

What’s in it: One serving contains:

  • 250mg magnesium
  • 650mg chloride
  • Trace amounts of sodium, potassium, sulfate, lithium, boron and 65+ other trace minerals

Who makes it: This product is made by Trace Minerals Research, a leader in the mineral supplement field. For 35 years, TMR has been working hard to create cutting-edge products using simple, natural mineral ingredients. Today, they offer over 100 unique products, and have grown exponentially in recent years.

Bottom line: Overall, this is a unique product and a top magnesium supplement. It’s all natural formula consists of nothing more than minerals extracted naturally from the waters of the Great Salt Lake in Utah. And, since it is a liquid, it’s easy to customize your dose to get what you want and nothing more. With that being said, liquid supplements are less convenient than pills for most people.

7. Country Life Calcium Magnesium Potassium

Country Life Calcium Magnesium Potassium is a powerful supplement that aims to give you an easy way to ensure you get enough of these key minerals every day. These three minerals are known to work synergistically in the body, and they are also very commonly deficient amongst Americans. By combining all three, this simple product provides convenience and efficiency.


  • 500mg magnesium
  • 500mg calcium
  • 99mg potassium
  • Three minerals combined
  • Good value

What’s in it: One serving contains:

  • 500mg magnesium
  • 500mg calcium
  • 99mg potassium
  • 250mg phosphorus

Who makes it: This product is made by Country Life, a supplement company committed to integrity, authenticity, cleanliness, freshness, consistency and accuracy. Founded in 1971 in New York, Country Life has now been in business for more than 40 years, and they have served the community very well. Through high quality, consistent products and dedicated customer service, they have earned their great reputation.

Bottom line: Overall, this is a strong magnesium supplement that’s really much more than that – it’s a powerful mineral supplement that covers many of the bases needed. If you don’t take a multivitamin or other supplements, this is a good choice because it offers several key nutrients in one package.

8. Source Naturals Ultra-Mag

Source Naturals Ultra-Mag is a strong magnesium supplement containing 400mg per serving. It also contains added vitamin B6, which provides benefits of its own. This product uses a blend of several types of the mineral, in order to optimize bioavailability and absorption.


  • 400mg per serving
  • Added vitamin B6
  • Uses a blend of highly bioavailable forms of magnesium
  • Made by a great company
  • Good value

What’s in it: One serving contains:

  • 400mg magnesium (as magnesium citrate, taurinate, malate, glycinate, and succinate)
  • 50mg vitamin b6

Who makes it: This product is made by Source Naturals, a large supplement manufacturer founded in 1982. With many decades of industry experience, the team at Source Naturals has now grown into quite a powerhouse in the supplement industry, today producing a wide range of products to fit the needs of the growing health-conscious community.

Bottom line: Overall, this is a good product from a good company. It contains a blend of several highly absorbable forms of magnesium, and also includes a hefty serving of vitamin b6. With that being said, it’s a bit on the expensive side, and many people will get enough vitamin b6 from their diet/supplements already, so it may not be necessary.

9. Olympian Labs Magnesium Citrate

Olympian Labs Magnesium Citrate is a potent magnesium vitamin offering 400mg per serving. It uses the citrate form of the mineral, which is highly bioavailable, meaning it will absorb more completely and easily, and it’s also easy on the stomach.


  • 400mg magnesium citrate per serving
  • The citrate form is one of the most highly bioavailable forms
  • Absorbs completely for better efficiency
  • Easy on the stomach

What’s in it: One serving contains:

  • 400mg magnesium (as magnesium citrate). This highly absorbable form is easy on the stomach and absorbs completely for optimal results.

Who makes it: This product is made by Olympian Labs, an Arizona-based supplement manufacturer. Founded in 1992, Olympian Labs has made it their mission to help people achieve optimal health, wellbeing, and balance. Now, with 25 years of experience, they’ve grown exponentially and now offer a wide variety of helpful health products.

Bottom line: Overall, this is a good magnesium citrate supplement, and should definitely be a consideration if you’re looking for this particular form of the mineral. It’s an effective supplement, but with that being said, it’s more expensive than the average product and it requires 3 capsules per serving.

10. NOW Foods Liquid Cal-Mag

NOW Foods Liquid Cal-Mag is a unique calcium magnesium supplement made by one of the biggest companies in the business. Offering 250mg magnesium and 500mg calcium per serving, this product covers two important bases of nutrition by ensuring you get enough of these two vital nutrients. Its liquid form makes it highly absorbable, as well as making it easier to customize your dosage.


  • 250mg magnesium
  • 500mg calcium
  • 400 iu vitamin D
  • 1mg boron
  • Liquid formula for better absorption
  • Provides adequate intake of several key nutrients
  • Made by one of the most trusted names in the business

What’s in it: One serving contains:

  • 250mg magnesium (as magnesium citrate)
  • 500mg calcium (as calcium citrate)
  • 400 iu vitamin D
  • 1mg boron

Who makes it: This product is made by NOW Foods, one of the biggest and best supplement manufacturers out there. NOW holds 3 spots on our list of the top 10 magnesium supplements, and for good reason: they offer high quality, consistent products. With more than 1,400 total product offerings, and operations worldwide, NOW Foods is a massive and very high quality company.

Bottom line: Overall, if you want to get a product that offers both of these key minerals in one, this is a good choice. It’s an effective product made by one of the best names in the business. With that being said, it’s on the expensive side, and liquid form supplements are not as convenient as pills or magnesium powders.

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