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White Plains, New York, June 21, 2017 — Magnesium supplements are among the most popular supplements, but do you need to take one and, if so, which is best? To find out, reviewed the clinical evidence, and purchased and tested popular magnesium supplements sold in the U.S. and Canada.

The tests revealed that four products contained less magnesium than claimed, took too long to break apart in disintegration testing, were contaminated with lead and/or were improperly labeled. It also found that tablets made with a particular form of magnesium was unstable, absorbing so much water from the air as to become wet and could damage nearby supplements. Among the magnesium products that successfully passed testing,'s Top Pick was a product made with a form of magnesium which is stable, well-absorbed, and costs just 6 cents per 200 mg of magnesium, which is about 50% of the daily requirement. Most people get at least the other 50% of the requirement from their diets. The results are now available in's new Magnesium Supplements Review.

The Review details the differences between forms of magnesium, including magnesium aspartate and orotate, magnesium citrate, magnesium chloride, magnesium lactate and lactate dihydrate, magnesium oxide and magnesium-L-threonate, and which of these may be more suitable for various uses, as well as dosage. It also explains why magnesium may be best taken as a single ingredient, despite the fact that it is often combined with other ingredients, such as calcium or vitamin D. It includes tips such as what to look for on labels and how to properly store magnesium supplements. Information about how to get magnesium from foods, and potential side effects and drug interactions with magnesium supplements is also provided.

Magnesium is the 7th most popular dietary supplement among people who regularly use supplements according to a recent survey by While it is an effective laxative and antacid, and can be helpful for conditions such as migraines and menstrual pain, there is little evidence it helps with restless leg syndrome or leg cramps. Although few people in the U.S. have a magnesium deficiency requiring supplementation, conditions such as diabetes, diseases of the digestive tract, and chronic use of antacid medications may deplete magnesium in the body.'s Magnesium Supplements Review is available online (at and includes test results and quality comparisons for the following 43 products, including 27 supplements selected for testing by, 16 supplements which passed the same testing through CL's voluntary Quality Certification Program, as well as information about five products which are similar to one which passed testing: AdvoCare Calcium Plus, AlgaeCal Plus, Bluebonnet EarthSweet Chewables Calcium Magnesium & D3, Caltrate 600 + D3, ChildLife Liquid Calcium With Magnesium, Country Life Target-Mins Calcium Magnesium, Doctor's Best High Absorption 100% Chelated Magnesium, Douglas Laboratories Magnesium Taurate, Dr. Mercola Magnesium L-Threonate, Finest Nutrition [Walgreens] Calcium, Magnesium & Zinc, Finest Nutrition [Walgreens] Magnesium, Finest Nutrition [Walgreens] Magnesium 400 mg, Jarrow Formulas Bone-Up, KAL Magnesium Glycnate, Kirkland Signature [Costco] Calcium Citrate Magnesium And Zinc, Life Extension Magnesium Caps, MAGINEX Advanced Magnesium, Mag-Tab SR, Metagenics CalApatite Bone Builder With Magnesium, Natural Factors Magnesium Oxide, Natural Vitality Natural Calm, Nature's Bounty Calcium Magnesium Zinc, Nature's Bounty Magnesium, Nature's Life Magnesium Malate, Nature's Plus Animal Parade® Mag Kidz, Nature's Way Alive Calcium Bone Formula, NOW Magnesium Caps, NutriCology Magnesium Chloride Liquid, Piping Magnesium Chloride, Pure Encapsulations OsteoBalance, Puritan's Pride Chelated Calcium Magnesium Zinc, Puritan's Pride High Potency Magnesium 500 mg, ReMag Magnesium Solution, Rexall Magnesium, Solgar Magnesium Citrate, Spring Valley [Walmart] Magnesium Citrate, Sundown Naturals Calcium Magnesium and Zinc, Sundown Naturals® Magnesium, Swanson Liquid Calcium & Magnesium, Trace Minerals Research Magnesium, TwinLab Magnesium Caps, USANA® MagneCal, Vitacost® Magnesium Citrate, Vital Nutrients Triple Mag, Vitamin World Calcium Magnesium Zinc, Vitamin World® High Potency® Magnesium and Wellesse Calcium & Vitamin D3.

Founded in 1999, is a leading provider of consumer information and independent evaluations of products that affect health and nutrition. Membership to is available online and provides immediate access to reviews of more than 1,000 products from over 400 brands. The company is privately held and based in Westchester, New York. It has no ownership from, or interest in, companies that manufacture, distribute, or sell consumer products.

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