Magnesium Salts Of Citric Acid
Magnesium citrate is GRAS-affirmed by FDA when used as a nutrient or dietary supplement and authorized in the EU as E345/citrate salts of magnesium. EFSA established a tolerable upper intake level of 250 mg/day of supplemental magnesium (separate from food).
What it is
Magnesium citrate salts (mono-, di-, tri-magnesium citrate) of citric acid.
Acidity regulator, sequestrant, fortifying mineral source.
Why it's flagged
- laxative effect at high supplemental doses
What regulators actually say
"The Food and Nutrition Board's tolerable upper intake level for magnesium from supplements is 350 mg/day for adults; very high doses can cause diarrhea."
"EFSA SCF set a tolerable upper intake level of 250 mg/day for supplemental magnesium (in addition to magnesium normally present in foods and water)."
Regulatory status
United States — FDA
GRAS for use as a nutrient/dietary supplement (21 CFR 184.1449 — magnesium hydroxide; magnesium salts of citric acid permitted under nutrient/processing aid use).
European Union — EFSA
Authorized as a magnesium salt of citric acid in supplements (Regulation 1170/2009).
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