Magnesium Sulfate & Magnesium Supplements Guide
Learn about Magnesium sulfate and Magnesium supplementation for nervous system health, bone density, and muscle cramps. Explore key ingredients and benefits.
What Is Magnesium Sulfate and Why Does Magnesium Matter?
Magnesium sulfate — commonly known as Epsom salt — is one of many forms of supplemental Magnesium that have been used for centuries. Historically, Magnesium-rich mineral waters were consumed for their purported health benefits, and Epsom salts (Magnesium sulfate) have been used for centuries for their soothing properties. The healing spring of Epsom, England became famous in the 17th century; the water there was rich in Magnesium sulfate, and locals quickly noticed its cleansing and calming effects.
Magnesium itself 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 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.
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. This formula delivers 250 mg of Magnesium from 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 sulfate for its historical uses or looking for a well-rounded daily Magnesium supplement, understanding how Magnesium works in the body is essential. If you have questions about which form of Magnesium may be right for you, our naturopath is available for a free consultation.
How Magnesium Supports Your Body
Magnesium plays a pivotal role in ATP synthesis — the molecule your body uses to store and release energy. Mg²⁺ is indispensable for cellular energy generation across virtually all tissues. This makes Magnesium essential for everything from muscle contraction to nerve signaling.
In the nervous system, Magnesium modulates neuronal excitability through voltage-gated Calcium antagonism and NMDA receptor blockade. This means it helps regulate how excitable your nerve cells are, supporting calm, balanced neurological function. Magnesium deficiency can lead to symptoms such as muscle cramps, fatigue, weakness, numbness, and tingling.
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, which are major regulators of bone homeostasis. Research suggests that people with higher levels of Magnesium may have higher bone mineral density, which is important for reducing the risk of bone fractures.
Calcium and Magnesium are nutritional partners and work best when taken together. This formula includes 40 mg of Calcium alongside its 250 mg of Magnesium, reflecting that synergy. Vitamin D and Magnesium also help the body better absorb Calcium, creating a tightly coordinated mineral system.
Key Ingredients

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Who Is This Magnesium Formula For?
This formula may be a good fit for anyone looking to support their nervous system, maintain bone density, or address occasional muscle cramps. It's designed for daily use, delivering Magnesium alongside complementary minerals and a traditional herbal base.
Adults who may not be getting enough Magnesium through diet alone could find this supplement particularly helpful. Research estimates that between 56 and 68% of Americans do not obtain enough Magnesium to meet the recommended daily allowance. The diets of most people in the United States provide less than the recommended amounts of Magnesium, with men older than 70 and teenage girls most likely to have low intakes.
Older adults may especially benefit, as Magnesium absorption and retention can decrease with age, leading to deficiency and health consequences. Individuals taking certain medications — such as diuretics or proton pump inhibitors — may also be at elevated risk for Magnesium depletion.
If you're unsure whether a Magnesium supplement is appropriate for your individual needs, we invite you to take advantage of our free naturopathic consultation. Our naturopath can help you think through which form and amount may best support your health goals.
How to Take This Magnesium Supplement
Take 1 tablet daily with a meal.
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. The bottle contains 180 tablets.
Magnesium supplements can occasionally cause softening of stool or mild gastrointestinal effects, particularly at higher doses. Taking the tablet with food, as directed, may help minimize any digestive discomfort. If you take medications such as bisphosphonates, tetracycline or quinolone antibiotics, or proton pump inhibitors, be aware that timing your Magnesium separately from these medications is typically recommended — our naturopath can help you navigate those considerations during a free consultation.
Escrito por Greg Howlett
Preguntas frecuentes
What is Magnesium sulfate, and how does it differ from Magnesium oxide?
Magnesium sulfate, commonly known as Epsom salt, has been used for centuries for its soothing properties — the famous healing spring at Epsom, England became renowned in the 17th century for water rich in Magnesium sulfate. Magnesium oxide, on the other hand, is one of the most concentrated supplemental forms by weight but has lower bioavailability compared to organic salts. This Nature's Sunshine formula uses Magnesium oxide and Magnesium amino acid chelate. Both Magnesium sulfate and Magnesium oxide are classified as inorganic Magnesium forms.
Why does this formula include Calcium with Magnesium?
Calcium and Magnesium are nutritional partners and work best when taken together. Magnesium helps the body better absorb Calcium and is required for vitamin D activation — a nutrient that also facilitates Calcium absorption. Both minerals support bone health and muscle function: Calcium is essential for muscle contraction, while Magnesium supports muscle relaxation.
How common is Magnesium deficiency?
Magnesium deficiency is quite common. It is estimated that between 56 and 68% of Americans do not obtain enough Magnesium in their diet on a daily basis to meet the recommended daily allowance. Older adults, individuals with type 2 diabetes, people with gastrointestinal disorders, and those taking certain long-term medications like diuretics and proton pump inhibitors are at elevated risk. Early signs of deficiency include loss of appetite, nausea, fatigue, and weakness; more severe deficiency may cause muscle cramps, numbness, tingling, and abnormal heart rhythms.
Can Magnesium supplements support bone density?
Research suggests that Magnesium is involved in bone formation and influences the activities of osteoblasts and osteoclasts — the cells responsible for building and breaking down bone. Observational data from large cohort studies found higher Magnesium intake associated with greater bone density in women. Magnesium also affects concentrations of parathyroid hormone and the active form of vitamin D, both major regulators of bone homeostasis. However, further research is needed to fully elucidate the role of Magnesium in the prevention and management of osteoporosis.
Does Magnesium help with muscle cramps?
Magnesium is the most studied mineral supplement for skeletal muscle cramps. Magnesium deficiency impairs muscle relaxation — muscles contract normally but struggle to fully release when levels are low. However, Cochrane reviews of multiple RCTs found that Magnesium supplementation is unlikely to provide meaningful cramp prophylaxis in older adults with idiopathic cramps, though evidence for pregnancy-associated leg cramps remains conflicting. Ensuring adequate Magnesium intake may still support overall muscle function.
Should I be concerned about interactions between Magnesium supplements and medications?
Magnesium can interact with certain medications. It may decrease the absorption of bisphosphonates (such as alendronate), tetracycline and quinolone antibiotics, and gabapentin. Loop and thiazide diuretics can deplete Magnesium, while proton pump inhibitors taken for prolonged periods can cause low Magnesium levels. Separating doses by at least two hours is typically recommended for antibiotics and bisphosphonates. If you take any medications, our naturopath is happy to discuss timing and potential interactions during a free consultation.
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