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The 5 Best Magnesium Supplements of 2024 [CNET]
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Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission.
Caroline Igo Editor, Sleep
Caroline Igo (she/her/hers) is a wellness editor and holds Sleep Science Coach and Stress Management certificates from the Spencer Institute. She received her bachelor’s degree in creative writing from Miami University and continues to further her craft in her free time. Before joining CNET, Caroline wrote for past CNN anchor, Daryn Kagan.
Expertise Sleep | Mattress Accessories | Vitamins and Supplements | Nutrition | Personal care Credentials
- Carl R. Greer/Andrew D. Hepburn Award for Best Nonfiction Essay (Miami University, 2020)
Even if you have a varied diet, you can still end up with deficiencies. Magnesium deficiency is one of those. An estimated 75% of US adults aren’t getting enough magnesium in their diets. It’s a crucial vitamin, because it supports energy production, aids in muscle and nerve health, helps with high blood pressure regulation and blood sugar control, and it may even help stave off insomnia. Although elemental magnesium is a metal, there are many forms of magnesium that can give you the amount required to fight your magnesium deficiency.
There are a ton of different forms of magnesium, including compounds like magnesium glycinate, magnesium malate and magnesium sulfate, which may be present in different kinds of dietary supplements. How you choose to fight your deficiency (or whether you have one for sure) is something you should discuss with your doctor, before you buy a magnesium supplement or any dietary supplement. Too much magnesium from food sources isn’t a concern for the average adult, but the same isn’t true for supplements. Supplements are generally much higher in concentrations, so you’ll need a doctor to confirm how much to take. If you take in too much magnesium from supplements, it can cause nausea, diarrhea and abdominal pain.
Here’s what you need to know about finding the best magnesium supplement.
What is magnesium?
Magnesium is one of the most abundant minerals in the human body — it plays a vital role in various bodily processes such as muscle movements and brain function. Studies reveal magnesium may improve depression symptoms, sleep, heart health and blood sugar levels.
There are many types of magnesium, which include magnesium aspartate, magnesium carbonate, magnesium chloride, magnesium citrate, magnesium gluconate, magnesium hydroxide, magnesium lactate, magnesium oxide and magnesium phosphate. The form of magnesium is determined by what it is bound with (for example, magnesium citrate is magnesium bound with citric acid), and some forms are more easily absorbed by the body than others.
Magnesium is found naturally in foods such as:
- Seeds
- Nuts
- Greens
- Soy milk
- Beans
- Whole grains
If your diet lacks many of these foods, you may need added magnesium. If you already take a multivitamin with magnesium, you don’t need an extra supplement. Consult your doctor before adding magnesium supplements to your diet.
We reviewed a number of magnesium supplements, along with their prices, brands, ingredients and consumer reviews. Here are our picks for the best magnesium supplements.
Pros
- Easily absorbed in the body more than other types of magnesium
- Magnesium citrate is a natural laxative
Cons
- Only a 60-day supply in one bottle, less than the other brands on this list
- Larger pills may be difficult to swallow
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Dosage: 2 softgels, daily with a meal
Form of magnesium: Magnesium citrate
Nature Made is a reliable brand that often makes our lists. Not only are its vitamins affordable, but Nature Made products are United States Pharmacopeia Verified. Its magnesium supplements are also gluten-free and don’t contain any dyes, synthetic colors or flavors. Each dosage of two softgels contains 250 milligrams of magnesium in the form of magnesium citrate, about 60% of recommended daily value. In addition to magnesium, the softgels also contain medium chain triglycerides, gelatin, rapeseed, glycerin, water and yellow beeswax.
Pros
- Easily absorbed in the body more than other types of magnesium
- Magnesium citrate is a natural laxative
Cons
- Only a 60-day supply in one bottle, less than the other brands on this list
- Larger pills may be difficult to swallow
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Dosage: 1 tablet, daily with a meal
Form of magnesium: Magnesium oxide
Nature’s Bounty is another well-known and accessible brand. Sold in Target, Walmart, Walgreens and CVS, Nature’s Bounty has been producing quality vitamins for over 50 years. Its products, including its magnesium supplement, contain no artificial color, flavor, sweeteners, sugar, starch, soy, gluten, wheat, yeast or fish. The supplements contain 500 mg of magnesium oxide, which is about 119% of the daily recommended value. They also contain vegetable cellulose, dicalcium phosphate, calcium carbonate, citric acid, medium chain triglycerides, polydextrose and vegetable magnesium stearate.
Pros
- One bottle contains 200 tablets
- Suitable for vegetarians
Cons
- Magnesium oxide is harder for the body to absorb
- Dosage is slightly above the recommended daily value
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Dosage: 1 teaspoon in 8 ounces of water, daily
Form of magnesium: Magnesium carbonate
Garden of Life offers a powder magnesium supplement for those who don’t want to swallow pills. Just add 1 teaspoon to a cup of room temperature water, let fizz, stir well and drink. The powder contains a magnesium blend of non-GMO citric acid, magnesium carbonate and sodium bicarbonate, organic brown rice protein magnesium chelate, organic raspberry flavor, organic lemon flavor and organic stevia extract (leaf). There are also three probiotic strains added: Lactobacillus plantarum, Lactobacillus bulgaricus and Lactobacillus acidophilus. The magnesium blend is 350 milligrams, which is 85% of the daily recommended value. There is also 120 milligrams of sodium, and the probiotic blend is 3.5 milligrams.
Pros
- Includes a probiotic blend
- A choice of two flavors: raspberry lemon or orange
Cons
- Tart, strong taste
- Reviews state that the powder doesn’t dissolve well
Is it OK to take magnesium supplements daily?
Yes. The daily Recommended Dietary Allowances of magnesium for adults between 19 and 30 years is 400 milligrams for men and 310 milligrams for women. For adults older than 30 years, men should take 420 milligrams and women 320 milligrams. However, you shouldn’t take a magnesium supplement daily if you’re already obtaining your daily amount in your diet. Speak with your doctor before adding any supplements to your diet.
How much magnesium should you take?
According to the National Institutes of Health, the recommended intake of magnesium depends on age and sex. Women and girls aged 14 to 18 require 360 milligrams; from aged 19 to 30 they require 310 milligrams; and from age 31 to 50 and above they need 320 milligrams. Men and boys aged 14 to 18 need 410 milligrams; at 19 to 30 they need 400 milligrams; and from 31 to 50 and above they require 420 milligrams.
What are the symptoms of low magnesium?
According to Health Direct, symptoms of low magnesium include:
- Fatigue and weakness
- Shaking
- Feeling of pins and needles
- Muscle spasms
- Sleepiness
- Abnormal heart rhythms
- Loss of appetite
- Nausea and vomiting
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