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What Is Magnesium Good For? Benefits & Uses

Discover what Magnesium good for β€” from nervous system support and bone density to muscle relaxation. Learn how this essential mineral supports hundreds of bodily functions.

Essential Mineral

What Is Magnesium Good For?

If you've ever wondered what is Magnesium good for, the short answer is: quite a lot. Magnesium is the fourth most abundant cation in the human body and a critical cofactor in more than 300 enzyme systems that regulate energy metabolism, neuromuscular function, cardiovascular health, bone integrity, and more. It's found in your bones, soft tissues, and blood β€” quietly working behind the scenes to keep your body running smoothly.

Nature's Sunshine Magnesium is formulated to deliver nervous system support and assist the many bodily functions that depend on this essential mineral. It helps metabolize various nutrients such as vitamin C, Phosphorus, potassium, and sodium, making it a true team player among minerals.

Despite its importance, research suggests that between 56 and 68% of Americans do not obtain enough Magnesium in their daily diet to meet the recommended daily allowance. Men older than 70 and teenage girls are among the most likely to have low intakes. If you're unsure whether Magnesium supplementation is right for you, our naturopath is available for a free consultation to help you think through your nutritional needs.

How It Works

Why Magnesium Matters for Your Body

Magnesium is required for energy production, oxidative phosphorylation, and glycolysis β€” the fundamental processes your cells use to generate fuel. It plays a pivotal role in ATP synthesis, making it indispensable for cellular energy generation across virtually all tissues. Without adequate Magnesium, even basic energy metabolism can be compromised.

In the nervous system, Magnesium regulates NMDA receptor activity and modulates neuronal excitability. This has implications for everything from everyday nerve function to migraine frequency. Research suggests that Magnesium supplementation reduced migraine attacks, severity, and monthly migraine days compared with control groups in a systematic review and dose-response meta-analysis of randomized controlled trials.

For bone health, Magnesium is involved in bone formation and influences the activities of osteoblasts and osteoclasts. It also affects the concentrations of both parathyroid hormone and the active form of vitamin D β€” two major regulators of bone homeostasis. Observational data from large cohort studies found higher Magnesium intake associated with 2–3% greater bone density in women.

Magnesium also acts as a natural muscle relaxant. It regulates muscle contraction via intracellular Calcium transport, and deficiency can impair muscle relaxation β€” muscles contract normally but may struggle to fully release when Magnesium levels are low. Calcium and Magnesium are nutritional partners and work best when taken together, which is why this formula includes both minerals.

What's inside

Key Ingredients

Magnesium β€” 250 mg
The cornerstone of this formula, Magnesium is an essential mineral and cofactor for over 300 enzymatic reactions including protein synthesis, muscle and nerve function, blood glucose control, and blood pressure regulation. Studies suggest it supports bone density β€” observational data from large cohort studies associate higher Magnesium intake with greater bone mineral density in women, and clinical trials including the COMB study show supplementation may attenuate bone loss. Research also links Magnesium to nervous system health as a natural NMDA receptor antagonist that modulates synaptic transmission and neuronal excitability. For muscles, a 2024 systematic review found Magnesium supplementation reduced muscle soreness, improved performance and recovery, and exerted a protective effect on muscle damage in physically active individuals. Magnesium deficiency is associated with muscle cramps, weakness, and impaired exercise performance. It also supports electrolyte balance as a primary intracellular electrolyte required for sodium-potassium ATPase function β€” foundational to all electrolyte transport.
Calcium β€” 40 mg
Calcium is the most abundant mineral in the human body, with over 99% stored in bone as hydroxyapatite, providing skeletal strength. Research suggests Calcium supplementation significantly improves bone mineral density, particularly in people under 35 building peak bone mass. Combined with vitamin D, it may help attenuate bone loss in older adults. Calcium is also essential for muscle contraction and relaxation β€” hypocalcemia is recognized as a cause of muscle cramps, tetany, and spasms in standard medical references. It plays a key role in neurotransmission, stabilizing membrane potential and controlling neuronal excitability, and is one of the seven primary electrolytes essential for nerve transmission, enzyme activity, and blood coagulation.
Phosphorus β€” 30 mg
Phosphorus is the second most abundant mineral in the human body, with approximately 85% residing in bones and teeth as hydroxyapatite alongside Calcium. It is essential for bone mineralization and maintaining bone mineral density. Phosphorus also plays critical roles in the nervous system β€” phospholipids containing Phosphorus are the primary components of neuronal cell membranes and are required for synaptic neurotransmission. Phosphate-based high-energy molecules like ATP fuel all nervous system and muscle function. It is one of the seven major electrolytes, essential for energy storage, acid-base buffering, and nucleic acid structure.
Kelp Leaf and Stem
Kelp is a brown algae and rich natural source of minerals including iodine, Calcium, Magnesium, potassium, and iron. It has been used traditionally for over 1,500 years in Japanese culture and in Traditional Chinese Medicine for glandular support. Pacific Northwest Indigenous Peoples historically used Kelp to treat headaches and other ailments. Kelp provides a base of naturally occurring trace minerals that complement the formula's primary mineral ingredients.
Licorice root
Licorice root (Glycyrrhiza glabra) has been used traditionally for over 4,000 years across Assyrian, Egyptian, Greek, Chinese, and Indian cultures. It was historically valued for gastrointestinal soothing, respiratory support, and general wellness. In Traditional Chinese Medicine, licorice appears in approximately 60% of prescriptions as a harmonizing herb. It contains over 300 active compounds including glycyrrhizin and various flavonoids. Licorice root is included here as a traditional base herb in the formula.
Peppermint Leaves
Peppermint (Mentha Γ— piperita) has been used as a remedy for indigestion since ancient Egyptian times, with dried leaves found in pyramids dating back to 1000 BC. The ancient Greeks and Romans valued it as a stomach soother. Peppermint contains menthol, which has been studied for its smooth muscle relaxant properties via Calcium channel blockade. The German Commission E approved Peppermint leaf for spastic complaints of the gastrointestinal tract. It serves as a complementary botanical in this formula.
White willow Bark
White willow bark (Salix alba) has a history of traditional use spanning over 3,500 years, from Sumerians and Egyptians to Hippocrates, who prescribed it for pain and fever. It contains salicin, which is metabolized to salicylic acid in the body. White willow bark has been traditionally used across European, Native American, and Chinese herbal traditions for muscle pain and soreness. Commission E approves it for fever and pain conditions. It is included here as a traditional base herb.
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Who Benefits

Who Should Consider a Magnesium Supplement?

Understanding what is Magnesium good for can help you determine whether supplementation makes sense for your lifestyle. This formula may be a good fit for people looking to support their nervous system, promote healthy bone density, or address occasional muscle cramps and tension.

Older adults may particularly benefit, as Magnesium absorption and retention can decrease with age. Research confirms that older people are more susceptible to Magnesium deficiency due to decreased absorption from food, increased medication use (some diuretics can deplete Magnesium), and potential dietary restrictions.

Active individuals may also want to consider Magnesium support. Exercise may increase Magnesium requirements by 10–20%, and a 2024 systematic review found that supplementation reduced muscle soreness and supported recovery in physically active people.

People taking certain medications β€” including proton pump inhibitors, loop or thiazide diuretics, or certain antibiotics β€” may be at elevated risk for Magnesium depletion. If you're on any medications and wondering about potential interactions, we encourage you to take advantage of our free naturopathic consultation to discuss your individual situation.

Directions

How to Take Nature's Sunshine Magnesium

Take 1 tablet daily with a meal. Each bottle contains 180 tablets, providing a generous six-month supply at the recommended serving size.

Because Calcium and Magnesium are nutritional partners and work best when taken together, this formula conveniently includes both minerals. Vitamin D also helps the body better absorb Calcium, so ensuring adequate vitamin D status may further support the benefits of this supplement.

About the author

Written by Greg Howlett

GH

Greg Howlett

Founder

Greg has spent over a decade helping customers choose the right natural-health products. He personally vets every formula we carry and writes these guides to cut through the marketing noise with practical, experience-based advice.

FAQ

Frequently asked questions

What is Magnesium good for in terms of everyday health?

Magnesium is a cofactor in more than 300 enzyme systems that regulate diverse biochemical reactions, including protein synthesis, muscle and nerve function, blood glucose control, and blood pressure regulation. It is required for energy production and helps metabolize nutrients such as vitamin C, Phosphorus, potassium, and sodium. It supports the nervous system, bone health, muscle relaxation, and proper elimination.

How much Magnesium does this product provide per serving?

Each tablet provides 250 mg of Magnesium from Magnesium oxide and Magnesium amino acid chelate, along with 40 mg of Calcium and 30 mg of Phosphorus in a base of Licorice root, Kelp plant, Peppermint leaves, and White willow bark. The recommended serving is 1 tablet daily with a meal.

What are the signs of Magnesium deficiency?

Early signs of Magnesium deficiency include loss of appetite, nausea, vomiting, fatigue, and weakness. As deficiency worsens, numbness, tingling, muscle contractions and cramps, personality changes, abnormal heart rhythms, and coronary spasms can occur. Research estimates that between 56 and 68% of Americans do not obtain enough Magnesium daily to meet the recommended allowance.

Does Magnesium help with muscle cramps?

Magnesium is the most studied mineral supplement for skeletal muscle cramps. It regulates muscle contraction via intracellular Calcium transport, and deficiency can impair muscle relaxation β€” muscles contract normally but may struggle to fully release when Magnesium levels are low. This formula also includes Calcium, since hypocalcemia is recognized as a cause of muscle cramps and spasms.

Can Magnesium support bone health?

Research suggests Magnesium is involved in bone formation and influences osteoblast and osteoclast activity. It also affects concentrations of parathyroid hormone and the active form of vitamin D β€” both major regulators of bone homeostasis. Observational data from large cohort studies associate higher Magnesium intake with greater bone mineral density. This formula pairs Magnesium with Calcium and Phosphorus, which together form the mineral matrix of bone.

Are there any medication interactions I should be aware of?

Magnesium can interact with certain medications including bisphosphonates, tetracycline and quinolone antibiotics, diuretics, proton pump inhibitors (PPIs), and gabapentin. Calcium may also interact with levothyroxine, lithium, and quinolone antibiotics. If you take any medications, we recommend discussing supplementation with your healthcare provider or scheduling a free consultation with our naturopath.

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What Is Magnesium Good For? Benefits & Uses