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Top Nurex Magnesium Complex | Heart, Brain & Kidney

Explore our top nurex Magnesium Complex with citrate and malate forms. Learn how this highly soluble formula supports heart, brain, kidney, and nervous system health.

Overview

Top Nurex Magnesium Complex: Dual-Form Support for Heart, Brain, and Kidneys

Magnesium is the fourth most abundant cation in the human body and a critical cofactor in more than 300 enzyme systems that regulate everything from energy production and nerve signaling to blood pressure and heart rhythm. Despite its essential roles, an estimated 56–68% of Americans do not obtain enough Magnesium from their daily diet to meet the Recommended Dietary Allowance. That widespread shortfall is why a well-formulated Magnesium supplement matters.

Our top nurex Magnesium Complex — Nature's Sunshine Magnesium Complex — delivers 184 mg of Magnesium per two-capsule serving through two organic, highly soluble forms: Magnesium citrate and Magnesium malate. Organic forms like citrate and malate are chelated to organic acids, giving them generally higher solubility and bioavailability compared to inorganic forms such as Magnesium oxide. Magnesium citrate in particular has been shown to have high solubility even in water (55%) and is substantially more soluble than Magnesium oxide in all states of acid secretion.

This dual-form approach is designed to support your cardiovascular system, brain and nervous system, and kidney health — the three pillars this formula is built around. If you have questions about whether a Magnesium supplement is right for your specific needs, our naturopath is available for a free consultation to help guide you.

How It Works

Why Two Forms of Magnesium — and Why Bioavailability Matters

Not all Magnesium supplements are created equal. The form of Magnesium determines how well your body can actually absorb and use the mineral. Magnesium supplements are broadly categorized into organic compounds (citrate, malate, glycinate, lactate) and inorganic compounds (oxide, sulfate, chloride). Organic forms involve Magnesium chelated to organic molecules such as organic acids, and they are generally more soluble with higher bioavailability.

This top nurex Magnesium Complex pairs Magnesium citrate and Magnesium malate — both organic forms — for optimum effectiveness. Magnesium citrate is recognized as one of the most bioavailable supplemental forms, with research demonstrating its high solubility in water and efficient absorption. Magnesium malate shares the favorable absorption profile of organic Magnesium salts. Together, these two forms help ensure the Magnesium you take actually reaches the cells that need it most.

Once absorbed, the Mg²⁺ ion goes to work as a cofactor in hundreds of enzymatic reactions. It is required for ATP synthesis — the fundamental energy currency of every cell — and plays a pivotal role in ion transport through the Na,K-ATPase pump. It modulates neuronal excitability through NMDA receptor blockade and voltage-gated calcium antagonism. And it participates in the regulation of vascular tone, cardiac electrophysiology, and inflammatory pathways.

What's inside

Key Ingredients

Magnesium citrate — 184 mg
Magnesium citrate is one of the most bioavailable supplemental forms of Magnesium, with high solubility even in water (55%) and substantially greater solubility than Magnesium oxide across all states of acid secretion. This efficient absorption means more of the mineral reaches the tissues where it is needed. Research supports Magnesium citrate's role across multiple body systems: <strong>Heart and cardiovascular health:</strong> Studies suggest that higher dietary and circulating Magnesium levels are inversely associated with risks of coronary heart disease, stroke, and total cardiovascular disease. Multiple RCTs and meta-analyses indicate that Magnesium supplementation may produce modest but significant reductions in blood pressure, particularly in Magnesium-deficient or hypertensive individuals, through mechanisms including vasodilation, calcium channel antagonism, and RAAS modulation. Magnesium is also a well-established cofactor in cardiac electrophysiology — hypomagnesemia is strongly linked to both ventricular and supraventricular arrhythmias, and a meta-analysis of 22 studies found that Magnesium significantly reduced arrhythmia incidence compared to placebo. Research also suggests Magnesium may significantly reduce arterial stiffness, support endothelial function, and participate in vascular calcification prevention. <strong>Nervous system health:</strong> Magnesium is fundamental to nervous system function, acting as a natural NMDA receptor antagonist that modulates synaptic transmission and neuronal excitability. Deficiency is clinically associated with neuromuscular hyperexcitability, tremors, and seizures. Research also supports Magnesium's role in nerve excitability modulation through regulation of calcium and potassium channels, with clinical evidence suggesting benefits for neuropathic pain reduction. As a cofactor in dopamine synthesis (tyrosine hydroxylase), Magnesium supports inhibitory-excitatory neurotransmitter balance; a 2017 RCT showed 248 mg/day significantly reduced both depression and anxiety scores. <strong>Kidney health:</strong> The kidneys are the primary site of Magnesium excretion and the major regulator of whole-body Magnesium homeostasis, with renal handling tightly regulated by PTH. Magnesium is a well-established inhibitor of calcium oxalate crystallization in urine. A landmark double-blind RCT (n=64, up to 3 years) found new kidney stones formed in only 12.9% of treated subjects versus 63.6% on placebo. Magnesium supplementation also reduces urinary oxalate excretion and raises urinary citrate — both key protective factors against stone formation. <strong>Inflammation:</strong> A 2022 meta-analysis of 17 RCTs (889 participants) found that Magnesium supplementation significantly decreased serum C-reactive protein (CRP) and increased nitric oxide (NO) levels, both relevant biomarkers for cardiovascular and systemic health.
Magnesium malate — 184 mg
Magnesium malate is an organic form of Magnesium chelated to malic acid, sharing the favorable solubility and bioavailability profile characteristic of organic Magnesium compounds. Like citrate, it is generally more readily absorbed than inorganic forms such as Magnesium oxide. In this formula, Magnesium malate complements Magnesium citrate to provide a dual-source approach to Magnesium delivery. The Magnesium from this form serves all of the same critical biological roles: it functions as a cofactor in more than 300 enzyme systems regulating energy metabolism, protein synthesis, muscle and nerve function, blood glucose control, and blood pressure regulation. Research supports its contributions to <strong>cardiovascular health</strong>, where Magnesium regulates cardiac excitation, vascular tone, and endothelial function — with lower Magnesium levels consistently associated with higher risks of arrhythmia, hypertension, and coronary artery disease. For <strong>nervous system function</strong>, Magnesium acts as a physiological NMDA receptor antagonist, regulating neuronal excitability and neuromuscular transmission, with deficiency linked to neurological disorders from migraine to depression. In <strong>kidney health</strong>, adequate Magnesium supports the kidneys' role as the primary regulator of whole-body Magnesium homeostasis and is associated with reduced risk of kidney stone formation. The relationship between Magnesium supplementation and <strong>triglycerides</strong> is clinically studied but results are mixed; some systematic reviews report a trend toward triglyceride reduction, particularly in diabetic or hypomagnesemic populations, while mechanistically, Magnesium influences lipid-metabolizing enzymes including lipoprotein lipase and HMG-CoA reductase.
Magnesium Complex
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Magnesium Complex
Magnesium Complex
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Who Benefits

Who May Benefit from This Magnesium Complex

Because Magnesium plays such a foundational role across so many body systems, a wide range of people may find this top nurex Magnesium Complex helpful. Certain groups are more likely than others to have Magnesium inadequacy, including:

  • Older adults — As we age, Magnesium absorption and retention can decrease. Older people are more susceptible to deficiency due to decreased absorption from food, increased medication use (diuretics can deplete Magnesium), and potential dietary restrictions. Men older than 70 are among the most likely to have low intakes.
  • People taking certain medications — Loop and thiazide diuretics deplete Magnesium through increased urinary excretion. Proton pump inhibitors (PPIs), when taken for prolonged periods (typically more than a year), can also cause hypomagnesemia.
  • Individuals with type 2 diabetes — Studies have demonstrated that diabetes is often accompanied by lower Magnesium status, and Magnesium deficiency may contribute to insulin resistance.
  • Those focused on heart health — Chronic Magnesium deficiency has been associated with increased risk of cardiovascular disease, and research suggests adequate Magnesium supports healthy blood pressure, arterial flexibility, and heart rhythm.
  • Anyone concerned about kidney stone risk — Research suggests Magnesium is a well-established inhibitor of calcium oxalate crystallization in urine, and supplementation may reduce urinary oxalate excretion while raising protective urinary citrate levels.

Early signs of Magnesium deficiency can include loss of appetite, nausea, fatigue, and weakness. As deficiency worsens, numbness, tingling, muscle cramps, and abnormal heart rhythms may occur. If you recognize any of these patterns, consider scheduling a free consultation with our naturopath to discuss whether Magnesium supplementation makes sense for you.

Directions

How to Take Magnesium Complex

Take 2 capsules twice daily with a meal. Each bottle contains 100 capsules.

Two capsules of Magnesium Complex contain 184 mg of Magnesium. For reference, the Recommended Dietary Allowance (RDA) for Magnesium is 400–420 mg/day for adult men and 310–320 mg/day for adult women. This supplement is intended to complement the Magnesium you already get from foods like green leafy vegetables, nuts, seeds, whole grains, and legumes.

Important safety note: Magnesium supplements can interact with several types of medications. If you take bisphosphonates, tetracycline or quinolone antibiotics, diuretics, proton pump inhibitors, or gabapentin, be sure to separate your doses appropriately — generally at least 2 hours for bisphosphonates, and at least 2 hours before or 4–6 hours after for antibiotics. Magnesium may reduce the absorption of gabapentin by 20%. As always, consult your healthcare provider before starting any supplement, especially if you have kidney concerns, as excess Magnesium is cleared through the kidneys.

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 forms of Magnesium are in this complex?

Magnesium Complex contains two organic forms — Magnesium citrate and Magnesium malate. These forms are generally more soluble and have higher bioavailability than inorganic forms like Magnesium oxide. Magnesium citrate in particular has been shown to have high solubility even in water (55%) and is substantially more soluble than Magnesium oxide across all states of acid secretion.

How much Magnesium does each serving provide?

Two capsules of Magnesium Complex contain 184 mg of Magnesium. The recommended use is 2 capsules twice daily with a meal, which provides 368 mg of Magnesium per day across two servings.

How does Magnesium support heart health?

Magnesium plays a well-documented role in cardiovascular health. Research suggests that higher Magnesium levels are inversely associated with risks of coronary heart disease, stroke, and total cardiovascular disease. Multiple RCTs and meta-analyses indicate Magnesium supplementation may produce modest but significant reductions in blood pressure, and Magnesium is a well-established cofactor in cardiac electrophysiology — hypomagnesemia is strongly linked to arrhythmias. A 2022 meta-analysis of 17 RCTs also found Magnesium supplementation significantly decreased C-reactive protein, an inflammatory biomarker relevant to cardiovascular health.

Can Magnesium help with kidney stones?

Research suggests Magnesium is a well-established inhibitor of calcium oxalate crystallization in urine. A landmark double-blind RCT (n=64, up to 3 years) found new kidney stones formed in only 12.9% of treated subjects versus 63.6% on placebo. Magnesium supplementation also reduces urinary oxalate excretion and raises urinary citrate, both key protective factors against stone formation. The kidneys also serve as the primary regulator of whole-body Magnesium homeostasis.

Are there any side effects or drug interactions I should know about?

Magnesium supplements can cause stomach-related issues such as nausea, cramping, and diarrhea, typically at higher doses and more commonly with inorganic forms. This formula uses organic forms (citrate and malate), which tend to be better tolerated. Magnesium can interact with bisphosphonates, tetracycline and quinolone antibiotics, certain diuretics, proton pump inhibitors, and gabapentin. Separate dosing is recommended — consult your healthcare provider if you take any of these medications.

How common is Magnesium deficiency?

It is estimated that 56–68% of Americans do not obtain enough Magnesium from their daily diet to meet the Recommended Dietary Allowance. Groups at elevated risk include older adults (due to decreased absorption), individuals with gastrointestinal disorders, people with type 2 diabetes, those with alcohol dependence, and individuals on long-term diuretics or proton pump inhibitors. Early signs of deficiency include fatigue, weakness, loss of appetite, and muscle cramps.

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