What is Magnesium Fumarate?
Magnesium fumarate is an organic compound formed by combining magnesium with fumaric acid, a naturally occurring dicarboxylic acid found in plants and animals. The compound has the CAS number 7704-71-4 and functions as a mineral nutrient supplement in the food industry. Fumaric acid itself is approved as a food additive in many jurisdictions, and magnesium fumarate represents one application of magnesium supplementation in food formulations.
Common Uses
Magnesium fumarate is used primarily in fortified foods and dietary supplements as a source of bioavailable magnesium. It may be incorporated into cereals, flour products, beverages, and nutritional supplements to increase magnesium content. The fumarate form is chosen because fumaric acid derivatives can provide enhanced absorption characteristics compared to some other magnesium salts. Magnesium is an essential mineral involved in over 300 enzymatic reactions in the human body, making magnesium supplementation a common practice in functional foods and nutraceuticals.
Safety Assessment
Magnesium fumarate has not been designated as GRAS (Generally Recognized As Safe) by the FDA, though this classification does not indicate a safety concern. Rather, it reflects that the additive has not undergone the formal GRAS notification process or does not meet specific criteria for that designation. The FDA has recorded zero adverse events associated with magnesium fumarate and zero product recalls involving this ingredient, indicating no documented safety incidents in the United States food supply.
The safety profile of magnesium fumarate derives from its two components. Magnesium is an essential nutrient with established dietary reference intakes (magnesium RDA ranges from 310-420 mg daily for adults depending on age and sex). Fumaric acid and its salts have been used in food applications and are generally recognized as safe at permitted levels. When consumed at appropriate levels through fortified foods and supplements, magnesium from all sources supports normal physiological function without typical adverse effects, though excessive supplemental magnesium can have laxative effects.
Regulatory Status
Magnesium fumarate's regulatory status varies internationally. While not FDA GRAS-listed, it may be used in the United States under FDA regulations for nutrient supplementation in foods, particularly in dietary supplements where broader regulations apply. The European Food Safety Authority (EFSA) has not specifically evaluated magnesium fumarate as a novel food ingredient, though magnesium compounds are established nutrients in European food law. In most jurisdictions, magnesium fumarate operates within existing frameworks governing mineral nutrient supplements rather than as a novel additive requiring separate approval.
Key Studies
Scientific literature on magnesium fumarate specifically is limited, as research has primarily focused on magnesium bioavailability from various salt forms and the established nutritional role of magnesium itself. Studies on fumaric acid and its derivatives demonstrate their safety in food applications at permitted levels. Research on magnesium absorption indicates that organic acid salts like fumarate may enhance bioavailability compared to inorganic forms, though comparative efficacy studies remain ongoing. The World Health Organization and nutritional science organizations recognize magnesium's essential role in human health, supporting the rationale for magnesium fortification in foods.