Magnesium Glycinate Complex | Heart, Brain & Kidney

A Magnesium glycinate complex is a supplement built around highly bioavailable, organic forms of Magnesium — the fourth most abundant cation in the human body and a critical cofactor in more than 300 enzyme systems. These enzymes regulate everything from protein synthesis and energy production to muscle and nerve function, blood glucose control, and blood pressure regulation.

Despite Magnesium's essential roles, emerging evidence confirms that nearly two-thirds of the population in the western world is not achieving the recommended daily allowance. It is estimated that between 56 and 68% of Americans do not obtain enough Magnesium in their diet on a daily basis. This widespread shortfall is linked to a range of health concerns, including cardiovascular issues, neurological symptoms, and impaired kidney function.

Nature's Sunshine Magnesium Complex addresses this gap by combining two organic forms of Magnesium — Magnesium citrate and Magnesium malate — chosen for their high solubility and efficient absorption. Two capsules provide 184 mg of Magnesium in forms the body can readily use, making this Magnesium glycinate complex a practical way to support the brain, heart, and kidneys with this essential mineral.

If you're unsure whether a Magnesium glycinate complex fits your wellness goals, our naturopath is available for a free consultation to help you find the right approach.

Cardiovascular Support

Magnesium plays a well-documented role in cardiovascular health. It regulates cardiac ion channels, myocardial conduction, and contraction. 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 indicate that supplementation may produce modest but significant reductions in blood pressure, particularly in Magnesium-deficient or hypertensive individuals.

Magnesium is also a well-established cofactor in cardiac electrophysiology. Hypomagnesemia is strongly linked to both ventricular and supraventricular arrhythmias. A meta-analysis of 22 studies found that Magnesium significantly reduced ventricular arrhythmias (11.88% vs 24.24%) compared to placebo. Additionally, research suggests Magnesium supplementation may significantly reduce arterial stiffness, support endothelial function, and participate in vascular calcification prevention.

Nervous System and Brain Function

Magnesium is fundamental to nervous system function, acting as a physiological NMDA receptor antagonist and regulator of neuronal excitability, neuromuscular transmission, and nerve signaling. It modulates synaptic transmission through voltage-gated calcium antagonism and NMDA receptor blockade. Hypomagnesemia is clinically associated with neuromuscular hyperexcitability, tremors, and seizures, and deficiency is linked to neurological conditions ranging from migraine to depression.

Research also suggests Magnesium serves as an essential cofactor in dopamine synthesis and a physiological blocker of NMDA glutamate receptor channels, supporting the balance between inhibitory and excitatory neurotransmitter activity. A 2017 RCT showed that 248 mg/day of Magnesium significantly reduced both depression and anxiety scores.

Kidney Health

The kidneys are the primary site of Magnesium excretion and the major regulator of whole-body Magnesium homeostasis — typically only 3–5% of filtered Magnesium is excreted in urine. This tight regulation is managed by parathyroid hormone (PTH), and kidney disease can profoundly disrupt it. Research suggests that Magnesium is a well-established inhibitor of calcium oxalate crystallization in urine. A landmark double-blind RCT found that new kidney stones formed in only 12.9% of treated subjects vs. 63.6% on placebo. Higher urinary Magnesium from adequate dietary intake is also associated with reduced risk of kidney stone formation.

Because Magnesium is involved in so many body systems, a wide range of people may benefit from supplementation. This Magnesium glycinate complex may be especially helpful for:

• Adults concerned about cardiovascular health — Research suggests adequate Magnesium supports healthy blood pressure, arterial flexibility, and normal heart rhythm.
• People wanting to support brain and nervous system function — Magnesium modulates neuronal excitability and neurotransmitter balance, which may support mood, nerve signaling, and overall neurological well-being.
• Individuals focused on kidney health — Studies suggest Magnesium may help inhibit calcium oxalate crystallization, supporting healthy urinary mineral balance.
• Older adults — As we age, Magnesium absorption and retention can decrease. Older people are more susceptible to Magnesium deficiency due to decreased absorption from food, increased medication use (diuretics can deplete Magnesium), and potential dietary restrictions.
• People on certain medications — Loop and thiazide diuretics and long-term proton pump inhibitor (PPI) use can deplete Magnesium levels. Those taking these medications may have increased need for supplementation.
• Anyone with dietary gaps — The diets of most people in the United States provide less than the recommended amounts of Magnesium. Men older than 70 and teenage girls are most likely to have low intakes.

If you're not sure whether this supplement is right for your situation, our naturopath offers free consultations and can help you think through your individual needs.

Take 2 capsules twice daily with a meal.

Each serving of 2 capsules provides 184 mg of Magnesium from two highly soluble organic forms — Magnesium citrate and Magnesium malate. The Recommended Dietary Allowance (RDA) for Magnesium is 400–420 mg/day for adult men and 310–320 mg/day for adult women.

Important safety notes: Magnesium supplements can interact with certain medications. If you take bisphosphonates, separate doses by at least 2 hours. If you take tetracycline or quinolone antibiotics, the antibiotic should be taken at least 2 hours before or 4–6 hours after Magnesium. Magnesium may also reduce the absorption of gabapentin by 20%. As always, consult your healthcare provider before starting any new supplement, especially if you take prescription medications or have kidney concerns.