Does Magnesium Make You Poop? What to Know

If you've ever searched "does Magnesium make you poop," you're far from alone. Magnesium is a cofactor in more than 300 enzyme systems in the body, and one of its well-known effects is its influence on bowel function. Nature's Sunshine Magnesium is formulated to support nervous system health, bone density, and muscle relaxation—and the label itself notes that it promotes proper elimination.

Historically, the connection between Magnesium and the digestive tract has been recognized for centuries. Ancient authors including Hippocrates and Galen described the "profound laxative effect" of mineral waters and salts rich in Magnesium. In the 17th century, the famous Epsom spring in England—rich in Magnesium sulfate—became widely known for its "cleansing" properties. Even Paracelsus noted that Magnesium-containing salts could serve as both a laxative and a sedative.

In modern supplement use, Magnesium supplements often cause softening of stool and are, in fact, sometimes used specifically for that purpose. The most common side effects of supplemental Magnesium are stomach-related issues, with side effects occurring more frequently at higher doses and with inorganic forms such as Magnesium oxide—one of the forms included in this Nature's Sunshine formula.

So does Magnesium make you poop, and if so, how? Magnesium's effect on bowel movements relates to several mechanisms. Magnesium supplements can cause nausea, cramps, and diarrhea—particularly at higher doses—because certain forms of Magnesium draw water into the intestines through osmotic action, which softens stool and may stimulate motility.

Inorganic forms of Magnesium, such as Magnesium oxide, are more commonly associated with gastrointestinal effects including softened stools, bloating, and flatulence. Magnesium oxide was found to be virtually insoluble in water and only 43% soluble in simulated peak acid secretion, which means a greater proportion may remain in the intestinal tract—contributing to its stool-softening reputation.

By contrast, organic forms like Magnesium citrate and Magnesium glycinate tend to be more readily absorbed and may produce fewer digestive side effects in some individuals. However, extra Magnesium from food is generally safe because the kidneys eliminate excess amounts in urine. High-dose supplements are more likely to lead to diarrhea, nausea, and cramping.

If you're curious about whether a particular Magnesium supplement is right for your digestive needs, our naturopath is available for a free consultation to help you choose wisely.

While "does Magnesium make you poop" may be the question that brought you here, Magnesium's importance extends far beyond the digestive tract. This mineral is necessary for the function of roughly 300 enzymes and plays essential roles across multiple body systems.

Nervous system: Magnesium is a natural NMDA receptor antagonist, modulating synaptic transmission and neuronal excitability. Research suggests that deficiency is associated with increased risk of neurological symptoms, and supplementation supports normal nerve function.

Bone health: Magnesium is involved in bone formation and influences the activities of osteoblasts and osteoclasts. It also affects concentrations of both parathyroid hormone and the active form of vitamin D—major regulators of bone homeostasis. Observational data from large cohort studies found that higher Magnesium intake was associated with 2–3% greater bone density in women.

Muscle relaxation: Magnesium deficiency impairs muscle relaxation—muscles contract normally but may struggle to fully release when levels are low. This formula is specifically highlighted as a muscle relaxant and for supporting energy production.

Energy production: Magnesium plays a pivotal role in ATP synthesis, the body's primary energy currency. It is indispensable for cellular energy generation across virtually all tissues.

Emerging evidence confirms that nearly two-thirds of the population in the Western world may not achieve the recommended daily allowance for Magnesium. The diets of most people in the United States provide less than recommended amounts, with men older than 70 and teenage girls most likely to have low intakes.

Certain groups 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 Nature's Sunshine formula pairs Magnesium with Calcium—nutritional partners that work best when taken together—in a base of supportive herbs. Whether you're looking for nervous system support, bone density maintenance, muscle comfort, or yes, help with proper elimination, Magnesium may be a foundational mineral worth considering.

If you're unsure whether Magnesium is right for you, we offer free naturopathic consultations to help guide your decision.

Take 1 tablet daily with a meal. Calcium and Magnesium are nutritional partners, and this formula conveniently includes both in a single tablet along with Phosphorus and a supportive herbal base.