Top Magnesium Oxide Brands for Optimal Health and Wellness

Magnesium oxide has become an essential supplement for many, offering a wide range of health benefits, such as improving digestion and supporting optimal bone health. With the increasing demand for high-quality magnesium oxide supplements, several brands have established themselves as leaders in providing effective and trustworthy products. From well-known names to emerging brands, it's crucial to find a product that ensures the correct dosage, purity, and safety. To help you make an informed choice, we've compiled a list of the best brands for magnesium oxide below.

Illustration of magnesium oxide

Best brands of magnesium oxide in 2025

NOW Foods

NOW Foods is a renowned brand in the health supplement industry, particularly noted for its high-quality magnesium oxide products. Since 1968, NOW Foods has been a family-owned company committed to providing non-GMO, vegan, and vegetarian-friendly supplements. Their Magnesium Oxide Pure Powder, for instance, offers 290 mg of magnesium per 1/4 teaspoon serving, which is approximately 69% of the daily recommended value. This product is GMP quality assured and free from common allergens like wheat, gluten, and soy. With a strong focus on customer health and satisfaction, NOW Foods continues to be a trusted name in the market.

Solaray

Solaray is a renowned brand for magnesium supplements, including magnesium oxide, which is the most commonly available and affordable form of the mineral. Despite its lower bioavailability, Solaray often blends magnesium oxide with other more absorbable types to enhance its effectiveness. The brand offers a range of magnesium products, such as Magnesium Glycinate and Magnesium Citrate, which provide up to 400 mg of magnesium per serving, covering up to 95% of the Daily Value. Notably, more than 50% of the population does not meet the daily estimated average requirements for magnesium from food alone, making supplements like those from Solaray crucial. Solaray's products are triple tested for purity and potency, ensuring high-quality nutritional support. For more information on their magnesium supplements, visit their website.

Nature Made

Nature Made is a renowned brand and a leading producer of magnesium oxide supplements, recognized as the #1 Pharmacist-Recommended Vitamin and Supplement Brand since 1997. Founded in 1971, Nature Made ensures high-quality products, with their magnesium supplements providing 250 mg of magnesium per serving, addressing the dietary shortfall that over 54% of U.S. adults face. Their products are sourced from high-quality ingredients, are gluten-free, and contain no synthetic dyes, artificial flavors, or preservatives. Nature Made was the first dietary supplement brand verified by the United States Pharmacopeia (USP) in 2002, ensuring purity and potency. Their commitment to quality and science has made them a trusted name in the supplement industry.

Solgar

Solgar is renowned as one of the best producers of magnesium supplements, particularly their Chelated Magnesium, which offers superior bioavailability and ease of absorption. Founded in 1947, Solgar has over 70 years of experience in developing innovative, science-based supplements. Their Chelated Magnesium is made in small batches to ensure optimal purity and potency, and it is free from artificial ingredients, fillers, and preservatives. This supplement supports nerve and muscle health, promotes calcium absorption, and encourages healthy energy levels, making it a top choice for those seeking high-quality magnesium supplementation. Solgar's commitment to non-GMO and kosher standards further enhances its credibility.

Pure Encapsulations

Pure Encapsulations is renowned for its high-quality magnesium supplements, particularly with its UltraMag Magnesium, which utilizes innovative microencapsulation technology to enhance absorption, outperforming magnesium citrate, glycinate, and oxide in clinical studies. This technology creates a phospholipid bilayer around the mineral, increasing solubility and facilitating better absorption across membranes. The brand has spent over 30 years researching and developing premium supplements, ensuring products are free from unnecessary additives and common allergens. UltraMag Magnesium promotes muscle relaxation, bone health, and cardiovascular well-being, making it a superior choice. Clinical studies have shown superior absorption rates of this microencapsulated magnesium compared to other forms.

Life Extension

Life Extension is renowned for its high-quality magnesium supplements, particularly its Extend-Release Magnesium, which combines magnesium oxide and magnesium citrate for optimal absorption. This formulation ensures both immediate and prolonged release, supporting cardiovascular and bone health through its consistent uptake. Magnesium oxide in this supplement is formulated with time-released microbeads, providing a six-hour absorption profile to minimize GI discomfort. This advanced formula makes it an invaluable choice for those seeking to supplement their magnesium-deficient diets, essential for over 300 biochemical reactions. With customer testimonials highlighting immediate benefits and ease of use, Life Extension's Extend-Release Magnesium stands out as a top choice.

Doctor's Best

Doctor's Best is renowned for its high-absorption magnesium products, which are crucial for various bodily functions, including muscle relaxation, sleep support, and maintaining a balanced mood. Their magnesium is chelated with natural amino acids, making it up to six times better absorbed than other forms of magnesium. This technology, known as TRAACS chelate from Albion, ensures the magnesium is water-soluble and gentle on the stomach. Approximately 75% of Americans are deficient in magnesium, making Doctor's Best products a vital supplement for many. Their formulas are non-GMO, gluten-free, soy-free, and vegan-friendly.

Country Life

Country Life is renowned as one of the best producers of magnesium supplements, particularly their Chelated Magnesium, which contains 250 mg of magnesium per serving, providing 60% of the daily recommended value. This supplement is formulated with magnesium oxide and magnesium amino acid chelate, ensuring better absorption and supporting heart health, muscle function, and bone health. Country Life's commitment to quality is evident in their gluten-free certification and the use of bioavailable forms of magnesium. Their Chelated Magnesium Glycinate, for instance, offers 400 mg of magnesium per serving, which is 95% of the daily recommended value. With a range of magnesium products, Country Life caters to various health needs, making it a trusted brand in the supplement industry.

KAL

KAL is a renowned brand for producing high-quality magnesium oxide supplements, offering products such as the Liposomal Magnesium Oxide, which contains 210 mg of magnesium per capsule, ensuring maximum absorption and benefits like fatigue reduction and normal energy metabolism. These supplements are vegan, gluten-free, and soy-free, catering to various dietary needs. The magnesium oxide in KAL products has the highest magnesium content among all magnesium compounds, making it an ideal choice for health enthusiasts. With a daily recommended dose of one capsule, KAL's magnesium supplements support essential bodily functions, including muscle and bone health. KAL's commitment to quality and absorption is evident in their unique formulations, such as the use of liposomes to ensure the magnesium oxide reaches the small intestine intact.

Swanson

Swanson is renowned as one of the best producers of magnesium oxide supplements, known for their high quality and purity. Their magnesium oxide capsules, such as the Swanson Premium Magnesium Oxide, contain 200 mg of magnesium per capsule, providing 95% of the daily recommended value. These supplements are essential for strong muscles and bones, cardiovascular health, and are involved in over 600 biochemical reactions. Swanson's products are tested for purity, potency, safety, and quality by both internal and third-party labs, ensuring they meet stringent standards. With a long history of customer trust, Swanson continues to be a reliable choice for wellness products.