We Asked 6 Dietitians About Their Favorite Magnesium Supplements, and These Are Their Recommendations

This supplement undergoes third-party testing to ensure that the label and contents match, and it’s also NSF Certified for Sport — meaning it’s free of all substances banned for competitive athletes by the United States Anti-Doping Agency (USADA). “This makes it great for athletes and nonathletes alike,” Huff says.

It’s also non-GMO and vegan. One capsule provides 120 milligrams of magnesium, or 29 percent of the daily value (DV) — but according to the package instructions, you can take up to four capsules daily, as directed by a healthcare professional. At about $0.27 per day, this magnesium is also one of the more affordable options on this list.

This magnesium oxide supplement from Nature Made provides 400 milligrams of magnesium from magnesium oxide, or 95 percent of the DV for magnesium. It’s also gluten-free and contains no artificial flavors or preservatives. For a softgel that provides nearly 100 percent of your daily magnesium needs, it has a nice price too — less than $0.24 per day.

However, this product contains gelatin, so it’s unsuitable for a vegan diet. It’s also not third-party tested, although our research found that it is manufactured to meet Nature Made’s purity and potency standards in a facility that follows the FDA’s Current Good Manufacturing Practices (CGMP) guidelines.

Our pick for best magnesium capsule is Pure Encapsulations Magnesium Glycinate. Magnesium capsules are an easy and convenient way to take magnesium, although magnesium powders are also very common. Many dietitians recommend the Pure Encapsulations brand. “The brand is known for high quality, hypoallergenic supplements,” notes Jennifer Bianchini, RDN.

The capsules are also vegan, and all Pure Encapsulations raw materials and supplements are third-party tested for heavy metals and contaminants. You can also purchase up to a one-year supply of this product at once, making the cost per serving fairly low compared to similar magnesium supplements.

Bianchini likes how transparent Life Extension is about its product testing and ingredients. “They’re also clear about the research and science behind all their products,” she says. Magnesium L-threonate is significantly more expensive than other forms of magnesium, but Life Extension’s formula is one of the most affordable ones. It’s also non-GMO, gluten-free, vegetarian, and third-party tested for safety, purity, and quality.

This product contains 144 milligrams of magnesium (from 2,000 milligrams of total magnesium L-threonate) per three-capsule serving. However, as mentioned, magnesium L-threonate is one of the most expensive types of magnesium supplement, and this one is about $1 per serving.

The supplement’s chelated magnesium bisglycinate and magnesium oxide structure makes it gentler on the digestive system, according to Seema Shah, RD. “Even my clients with the most delicate digestive tracts report no GI side effects from this supplement,” she says.

One serving of these vegetarian capsules provides 300 milligrams of magnesium, or 71 percent of the DV. With its simple formulation and high amounts of magnesium in each serving, this supplement is also a good choice for nonathletes who are looking to improve their magnesium status. This is also a moderately priced option, coming in at about $0.63 per serving.

“I personally use and love this product,” says Jessica Gust, RDN. “I love that it’s a powder you can add to warm water at night to wind down after a long day.” It provides 320 milligrams (80 percent of the DV) of magnesium per serving. It has a pleasant mild chamomile tea flavor, and it’s lightly sweetened with monk fruit.

It’s also vegan, non-GMO, and third-party tested for safety and quality. However, at over $1 per serving, it’s more expensive than many other magnesium supplements.

This magnesium powder comes in several flavors and mixes easily into water. It’s sweetened with organic stevia. One serving size (roughly two teaspoons) contains 325 milligrams of magnesium carbonate and citric acid, or 77 percent of the DV for magnesium. Once it’s mixed into liquid, the magnesium carbonate and citric acid react to make magnesium citrate. The product is vegan, non-GMO, and third-party tested for contaminants and heavy metals.

If you’re going to consistently take a magnesium supplement, especially in powder form, it needs to taste good. And after trying an entire container of JSHealth Magnesium+ powder, I can confidently say that the raspberry lemonade flavor tastes great mixed in plain water or other beverages (like orange juice and sparkling water).

Each two-scoop serving contains 400 milligrams of magnesium (95 percent of the DV) from a combination of magnesium citrate, magnesium amino acid chelate, and magnesium glycinate dihydrate. The inclusion of three different forms of magnesium also makes this product an excellent choice for an all-around magnesium supplement for people who aren’t necessarily looking for one specific benefit.

JSHealth’s products are also third-party tested for contaminants and heavy metals, and this magnesium supplement is vegan and non-GMO. However, at over $1 per serving, it’s one of the pricier options.

If you dislike swallowing supplement capsules but still want a convenient, easy-to-take supplement with no mixing required, gummies are a good choice. These magnesium gummies from Trace Minerals contain 84 milligrams (or 20 percent of the DV) of magnesium citrate per gummy, but you can take up to four daily if you need a higher magnesium intake.

Trace Minerals products are third-party tested to ensure quality, safety, and purity. Since these gummies are free of gelatin, they’re also fine for vegans and vegetarians. However, gummy vitamins may not be the best choice for some people, such as those on a low-carb diet (like keto). Each gummy contains 1 gram of added sugar.

Additionally, although the price per serving is moderate if you only take one gummy per day, it’s quadrupled if you take four daily.

The drink mix comes in two flavors (as well as an unflavored option). Each serving provides 310 milligrams (70 percent of the DV) of magnesium from magnesium gluconate, magnesium acetyl taurinate, and magnesium citrate. Magnesi-Om is third-party tested, vegan, and non-GMO too.

Note, however, that this is one of the most expensive magnesium supplements out there, at roughly $1.50 per serving. Still, many reviewers say it really works — helping them sleep better and feel more relaxed in the evenings.

Recess products are third-party tested and vegan. However, at almost $2 per serving, they are significantly more expensive than most other magnesium supplements.