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Triple Magnesium Complex | Heart, Brain & Kidney Support

Explore our triple Magnesium Complex guide. Learn how Magnesium citrate and malate support heart health, nervous system function, and kidney health in one formula.

Overview

What Is a Triple Magnesium Complex and Why Does It Matter?

A triple Magnesium Complex brings together multiple highly bioavailable forms of Magnesium in a single supplement, making it easier to keep up with one of the most important β€” and most commonly under-consumed β€” minerals in the human body. Magnesium is the fourth most abundant cation in the body and serves as a cofactor in more than 300 enzyme systems that regulate everything from energy production and nerve signaling to blood pressure and heart rhythm.

Despite its critical roles, research confirms that an estimated 56–68% of Americans do not obtain enough Magnesium from their daily diet to meet the Recommended Dietary Allowance. That shortfall is linked to a wide range of health concerns β€” from muscle cramps and fatigue to cardiovascular irregularities and impaired nervous system function.

Nature's Sunshine Magnesium Complex addresses this gap by combining Magnesium citrate and Magnesium malate β€” two organic forms prized for their solubility and absorption. Two capsules provide 184 mg of Magnesium in a highly soluble formula designed to support the heart, brain, and kidneys.

Form Matters

Why Citrate and Malate? Understanding Bioavailability

Not all Magnesium supplements are created equal. Magnesium is available in organic forms (citrate, malate, glycinate, lactate) and inorganic forms (oxide, sulfate, chloride). The distinction matters because organic forms are generally more soluble and better absorbed.

Magnesium citrate, one of the two forms in this triple Magnesium Complex, is among the most bioavailable options available. Research shows that Magnesium citrate has high solubility even in water (55%) and is substantially more soluble than Magnesium oxide in all states of acid secretion. That high solubility translates to more efficient absorption in the digestive tract.

Magnesium malate β€” Magnesium bound to malic acid β€” is another well-regarded organic form. Like citrate, it falls into the category of organic Magnesium salts that are generally more soluble and have higher bioavailability than their inorganic counterparts.

By combining these two forms, Magnesium Complex offers what we consider a well-rounded approach to supplementation β€” highly soluble Magnesium that's designed for optimum effectiveness. If you have questions about which form of Magnesium may be right for your individual needs, our naturopath is available for a free consultation.

What's inside

Key Ingredients

Magnesium citrate β€” 184 mg
Magnesium citrate is one of the most bioavailable supplemental forms of Magnesium, with high solubility in water (55%) β€” substantially more soluble than Magnesium oxide in all states of acid secretion. Research suggests Magnesium citrate supports cardiovascular health in multiple ways: studies show higher circulating Magnesium levels are inversely associated with risks of coronary heart disease, stroke, and total cardiovascular disease. A 24-week randomized controlled trial found that Magnesium citrate supplementation significantly reduced arterial stiffness as measured by pulse wave velocity. Multiple RCTs and meta-analyses suggest it may modestly but significantly help support healthy blood pressure levels, particularly in individuals with low Magnesium status. Magnesium citrate also supports heart rhythm; hypomagnesemia is strongly linked to both ventricular and supraventricular arrhythmias, and a meta-analysis of 22 studies found Magnesium significantly reduced arrhythmia incidence compared to placebo. For kidney health, Magnesium is a well-established inhibitor of calcium oxalate crystallization in urine. A landmark double-blind RCT of potassium-Magnesium citrate showed new kidney stones formed in only 12.9% of treated subjects versus 63.6% on placebo. The kidneys are the primary site of Magnesium excretion and the major regulator of whole-body Magnesium homeostasis. For the nervous system, Magnesium functions as a natural NMDA receptor antagonist, modulating synaptic transmission and neuronal excitability. Deficiency is clinically associated with neuromuscular hyperexcitability, tremors, and neurological symptoms ranging from migraine to mood changes. Research also suggests Magnesium plays a role in nerve excitability modulation and neuropathic pain reduction, and it serves as an essential cofactor in dopamine synthesis, supporting inhibitory-excitatory neurotransmitter balance.
Magnesium malate β€” 184 mg
Magnesium malate is an organic form of Magnesium β€” Magnesium bound to malic acid β€” that is generally more soluble and has higher bioavailability than inorganic forms like Magnesium oxide. Like Magnesium citrate, it shares the full spectrum of Magnesium's essential roles in the body. Research supports Magnesium's cardiovascular benefits: large meta-analyses and prospective cohort studies consistently associate higher Magnesium levels with lower risks of coronary heart disease, atrial fibrillation, and heart failure. Magnesium regulates cardiac ion channels, myocardial conduction, and contraction. For blood pressure, a 2021 systematic review of 49 clinical trials confirmed antihypertensive effects through mechanisms including vasodilation and calcium channel antagonism. Magnesium malate also contributes to kidney health β€” higher urinary Magnesium from adequate dietary intake is associated with reduced risk of kidney stone formation, and Magnesium supplementation reduces urinary oxalate excretion while raising urinary citrate, both key protective factors. In the nervous system, Magnesium is fundamental as a physiological NMDA receptor antagonist and regulator of neuromuscular transmission and nerve signaling. Hypomagnesemia is linked to neurological disorders ranging from migraine to depression. Research also suggests Magnesium supplementation may support nerve health, with clinical evidence supporting its role in nerve excitability modulation and reduced neuropathic discomfort. Low serum Magnesium levels have been associated with greater restless leg syndrome severity, and a 2024 systematic review of 10 RCTs confirmed Magnesium as showing the strongest supplemental benefit for that condition.
Magnesium Complex
Magnesium Complex
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Magnesium Complex
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Who Benefits

Who Should Consider a Triple Magnesium Complex?

Because Magnesium plays such a broad role in the body β€” from cardiac rhythm and blood vessel tone to nerve signaling and kidney mineral balance β€” many different people may benefit from a triple Magnesium Complex. This formula is specifically formulated to support the cardiovascular system and help brain, kidney, and heart functions.

Adults concerned about heart health. Research suggests that higher dietary and circulating Magnesium levels are inversely associated with risks of coronary heart disease, stroke, and total cardiovascular disease. In 2022, the FDA approved a qualified health claim stating that consuming diets with adequate Magnesium may reduce the risk of high blood pressure, though the agency noted the evidence is inconsistent and inconclusive.

Those seeking kidney support. Magnesium is a well-established inhibitor of calcium oxalate crystallization in urine. The kidneys are the primary regulators of whole-body Magnesium homeostasis, and higher urinary Magnesium from adequate intake is associated with reduced risk of kidney stone formation.

People focused on nervous system wellness. Magnesium is fundamental to nervous system function, modulating neuronal excitability and neuromuscular transmission. Deficiency is associated with symptoms ranging from muscle cramps and tingling to mood changes.

Older adults. As we age, Magnesium absorption and retention can decrease. Older adults are more susceptible to deficiency due to decreased absorption from food, increased medication use (certain diuretics can deplete Magnesium), and potential dietary restrictions.

People on certain medications. Loop and thiazide diuretics, proton pump inhibitors (PPIs), and certain antibiotics can all affect Magnesium status. If you take any of these medications, talking with a healthcare professional about your Magnesium levels may be worthwhile.

Directions

How to Take Magnesium Complex

Take 2 capsules twice daily with a meal.

Each serving of 2 capsules provides 184 mg of Magnesium from Magnesium citrate and Magnesium malate. The product comes in a 100-capsule bottle.

The Recommended Dietary Allowance (RDA) for Magnesium is 400–420 mg/day for adult men and 310–320 mg/day for adult women. During pregnancy, the requirement increases to about 350–360 mg daily. The Tolerable Upper Intake Level (UL) for supplemental Magnesium is 350 mg β€” note that this applies only to Magnesium from supplements and medications, not from food.

Magnesium supplements can sometimes cause digestive effects such as softened stool, nausea, or cramping, particularly at higher doses. These side effects are more common with inorganic forms like Magnesium oxide; the organic forms in this product (citrate and malate) are generally better tolerated.

Important interactions to be aware of: Magnesium may interfere with the absorption of bisphosphonates, tetracycline and quinolone antibiotics, and gabapentin. If you take any of these medications, separate your Magnesium supplement by at least 2 hours (or 4–6 hours for certain antibiotics). If you are on diuretics or proton pump inhibitors, be aware that these medications can affect your Magnesium levels. Always consult your healthcare provider before starting a new supplement, especially if you take prescription medications.

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 triple Magnesium Complex?

Magnesium Complex contains two organic forms of Magnesium: Magnesium citrate and Magnesium malate. Both are organic salts that 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 in all states of acid secretion.

How much Magnesium does each serving provide?

Two capsules of Magnesium Complex contain 184 mg of Magnesium. The recommended usage is 2 capsules twice daily with a meal. The Recommended Dietary Allowance for Magnesium is 400–420 mg/day for adult men and 310–320 mg/day for adult women.

How does Magnesium support heart and cardiovascular health?

Magnesium is a cofactor in cardiac electrophysiology, modulating ion channel exchanges and action potentials. Research suggests 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 suggest Magnesium supplementation may produce modest but significant reductions in blood pressure, and Magnesium deficiency is linked to cardiac arrhythmias including atrial fibrillation. In 2022, the FDA approved a qualified health claim that consuming diets with adequate Magnesium may reduce the risk of high blood pressure, though the evidence was characterized as inconsistent and inconclusive.

Can Magnesium supplements help with kidney stone prevention?

Research suggests Magnesium is a well-established inhibitor of calcium oxalate crystallization in urine. A landmark double-blind RCT of potassium-Magnesium citrate (n=64, up to 3 years) showed new 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 β€” both key protective factors against stone formation. The kidneys are the primary site of Magnesium excretion and the major regulator of whole-body Magnesium homeostasis.

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

Magnesium supplements can cause nausea, cramping, and softened stool, particularly at higher doses. Side effects are more common with inorganic forms like Magnesium oxide than with the organic forms (citrate and malate) used in this product. Magnesium can interact with several medications: it may decrease absorption of bisphosphonates (separate by at least 2 hours), tetracycline and quinolone antibiotics (take antibiotics at least 2 hours before or 4–6 hours after Magnesium), and gabapentin (may reduce absorption by 20%). Loop and thiazide diuretics can deplete Magnesium, while long-term proton pump inhibitor use can cause low Magnesium levels. Always consult your healthcare provider before starting supplementation if you take prescription medications.

Who is most at risk for Magnesium deficiency?

Research estimates that 56–68% of Americans do not get enough Magnesium daily to meet the Recommended Dietary Allowance. Groups at particular risk include older adults (due to decreased absorption and increased medication use), individuals with gastrointestinal disorders, those with type 2 diabetes, people with alcohol dependence, and individuals taking certain long-term medications such as diuretics or proton pump inhibitors. Early signs of deficiency include loss of appetite, nausea, fatigue, and weakness; as deficiency worsens, muscle cramps, numbness, tingling, and abnormal heart rhythms can occur.

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