Magnesium Threonate & Magnesium Forms Explained
Explore Magnesium threonate and other Magnesium forms for nervous system health, bone density, and muscle cramps. Learn about key ingredients and benefits.
What Is Magnesium and Why Does It Matter?
Magnesium is the fourth most abundant cation in the human body and a critical cofactor in hundreds of enzymatic reactions that regulate energy metabolism, neuromuscular function, cardiovascular health, bone integrity, immune defense, and psychological well-being. It is naturally present in many foods, available as a dietary supplement, and present in some medicines such as antacids and laxatives.
Nature's Sunshine Magnesium provides nervous system support and assists in a variety of bodily functions. Used by several hundred enzymes in their daily tasks, Magnesium is found in the bones, soft tissues, and blood. It helps metabolize various nutrients such as vitamin C, Phosphorus, potassium, and sodium. Calcium and Magnesium are nutritional partners and work best when taken together.
When shopping for Magnesium supplements, you'll encounter many different forms — and Magnesium threonate is one that has gained particular attention. Magnesium L-threonate has gained attention for its potential cognitive benefits, attributed to its ability to cross the blood–brain barrier, though more research is needed to fully understand its efficacy in this context. Other common forms include Magnesium oxide, Magnesium citrate, Magnesium glycinate, and Magnesium amino acid chelate, each with its own absorption profile and strengths.
Nature's Sunshine Magnesium comes in 250 mg capsules of Magnesium oxide and Magnesium amino acid chelate in a base of Licorice root, Kelp plant, Peppermint leaves, and White willow bark. Whether you're exploring Magnesium threonate for brain health or a broader-spectrum Magnesium formula for whole-body support, understanding the differences between forms can help you make the best choice. If you're unsure which form is right for you, our naturopath offers free consultations to help guide your decision.
Magnesium Threonate vs. Other Magnesium Forms
Magnesium supplements are broadly categorized into organic and inorganic compounds. Organic forms, such as Magnesium citrate, glycinate, lactate, or malate, involve Magnesium chelated to organic molecules like amino acids or organic acids. These forms are generally more soluble and have higher bioavailability. Inorganic forms, such as Magnesium oxide, sulphate, and chloride, are bound to inorganic salts and tend to have lower solubility and absorption rates.
Magnesium threonate stands out among organic forms because of its unique association with cognitive support. Research interest in Magnesium threonate centers on its potential ability to cross the blood–brain barrier, though more research is needed to fully understand its efficacy. For those specifically seeking nervous system and cognitive support, Magnesium threonate is worth exploring.
Other notable forms include:
- Magnesium citrate — one of the most bioavailable forms with high solubility in water, leading to efficient absorption.
- Magnesium glycinate (bisglycinate) — often recommended for individuals with sensitive digestive systems, as it tends to cause fewer gastrointestinal side effects.
- Magnesium oxide — the most concentrated form by weight but has lower bioavailability compared to organic salts. It was virtually insoluble in water and only 43% soluble in simulated peak acid secretion.
- Magnesium amino acid chelate — Magnesium chelated with amino acids, which may be absorbed via the dipeptide transporter pathway.
This Nature's Sunshine formula combines Magnesium oxide and Magnesium amino acid chelate to deliver 250 mg of Magnesium per tablet, paired with a supportive herbal base for comprehensive whole-body benefits.
Who Is This Formula For?
This Magnesium formula is designed for adults seeking support for nervous system health, bone density, and muscle cramps — three areas where Magnesium plays a well-documented role. Whether you've been researching Magnesium threonate for cognitive and nervous system benefits or looking for broader musculoskeletal support, a comprehensive Magnesium supplement may be a helpful foundation.
Emerging evidence confirms that nearly two-thirds of the population in the western world is not achieving the recommended daily allowance for Magnesium, a deficiency problem contributing to various health conditions. Men older than 70 and teenage girls are most likely to have low intakes. As we age, Magnesium absorption and retention can decrease, leading to deficiency and health consequences.
Certain groups of people are more likely than others to have Magnesium inadequacy, including older adults (due to decreased absorption), individuals with gastrointestinal disorders, those with type 2 diabetes, people with alcohol dependence, and individuals on certain long-term medications such as diuretics and proton pump inhibitors.
This formula also includes Calcium, Phosphorus, and a base of traditional herbs — making it a thoughtful choice for anyone wanting multi-faceted mineral support. If you're unsure whether your current Magnesium intake is adequate or which form suits your needs, our naturopath is available for a free consultation.
Key Ingredients

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How to Take This Magnesium Supplement
Take 1 tablet daily with a meal. Each tablet provides 250 mg of Magnesium along with 40 mg of Calcium, 30 mg of Phosphorus, and a supportive herbal base of Licorice root, Kelp plant, Peppermint leaves, and White willow bark.
Calcium and Magnesium are nutritional partners and work best when taken together — this formula conveniently includes both minerals in a single tablet. For best absorption, taking your tablet with food helps your body utilize these minerals more effectively.
If you have questions about how this formula fits into your daily routine, or whether you might benefit from additional Magnesium threonate supplementation for cognitive support, our naturopath is happy to provide a free consultation.
Written by Greg Howlett
Frequently asked questions
What is the difference between Magnesium threonate and the Magnesium in this formula?
Magnesium L-threonate has gained attention for its potential cognitive benefits, attributed to its ability to cross the blood–brain barrier, though more research is needed to fully understand its efficacy. This Nature's Sunshine formula uses Magnesium oxide and Magnesium amino acid chelate — forms designed for broad whole-body support including nervous system health, bone density, and muscle cramps. The best form for you depends on your individual health goals, and our naturopath can help you determine the right fit through a free consultation.
How many enzymes does Magnesium support in the body?
Magnesium is a cofactor in more than 300 enzyme systems that regulate diverse biochemical reactions in the body, including protein synthesis, muscle and nerve function, blood glucose control, and blood pressure regulation. It is also required for energy production, oxidative phosphorylation, and glycolysis.
How common is Magnesium deficiency?
Emerging evidence confirms that nearly two-thirds of the population in the western world is not achieving the recommended daily allowance for Magnesium. It is estimated that between 56 and 68% of Americans do not obtain enough Magnesium in their diet on a daily basis. Men older than 70 and teenage girls are most likely to have low intakes. Early signs of deficiency include loss of appetite, nausea, vomiting, fatigue, and weakness. As deficiency worsens, numbness, tingling, muscle cramps, seizures, and abnormal heart rhythms can occur.
Why are Calcium and Magnesium included together in this formula?
Calcium and Magnesium are nutritional partners and work best when taken together. Both minerals play essential roles in bone health, muscle function, and nerve signaling. Magnesium influences osteoblast and osteoclast activity and affects concentrations of both parathyroid hormone and vitamin D — major regulators of bone homeostasis. Their complementary roles make a combined formula an efficient way to support the musculoskeletal and nervous systems.
Can Magnesium supplements cause side effects?
Magnesium supplements can cause nausea, cramps, and diarrhea, particularly at higher doses. Side effects are generally more common with inorganic forms such as Magnesium oxide. Extra Magnesium from food is considered safe because the kidneys eliminate excess amounts in urine. If you take medications such as diuretics, proton pump inhibitors, bisphosphonates, or certain antibiotics, it's important to be aware of potential interactions. Our naturopath can help you navigate these considerations.
What role does Magnesium play in muscle cramps and relaxation?
Magnesium deficiency impairs muscle relaxation — muscles contract normally but struggle to fully release when Magnesium levels are low. Magnesium is an essential mineral cofactor for ATP synthesis, muscle contraction, and electrolyte homeostasis. This formula is designed to support healthy muscle function as a muscle relaxant, and also promotes proper elimination and boosts energy production.
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