Product Label

Trace Minerals Research Ionic Magnesium 400 mg

Brand: Trace Minerals Research · Form: LIQUID, SUPPLEMENT FORM [E0165]

Our assessment

The evidence shows that Trace Minerals Research Ionic Magnesium 400 mg is a magnesium supplement in liquid form. Magnesium is an essential mineral that supports over 300 biochemical reactions in the body, including muscle and nerve function, blood glucose control, and protein synthesis [NIH ODS]. The recommended dietary allowance (RDA) for magnesium is 400–420 mg daily for adult men and 310–320 mg daily for adult women [NIH ODS]. This product provides 400 mg per serving, which meets the RDA for men and exceeds it for women. Data on the specific ionic form and absorption rate of this particular product are not available.

How it works

Think of magnesium as a critical cofactor — it helps enzymes in your body perform essential tasks, from energy production in your cells to regulating the electrical signals that keep your heart beating steadily [NIH ODS]. Magnesium also plays a role in bone development and helps transport calcium and potassium across cell membranes, which is important for nerve impulse conduction and muscle contraction [NIH ODS]. The ionic form in this product means the magnesium is dissolved in water as charged particles, which may theoretically support absorption, though specific bioavailability data for this formula are not available.

Safety profile

Data not available from FDA adverse event reports for this specific product. However, the National Institutes of Health Office of Dietary Supplements notes that high doses of magnesium from supplements can cause side effects such as diarrhea, nausea, and abdominal cramping [NIH ODS]. The tolerable upper intake level for supplemental magnesium is 350 mg per day, which this product exceeds at 400 mg [NIH ODS]. You should be aware that exceeding this level can lead to diarrhea and gastrointestinal distress. Individuals with kidney disease should consult a healthcare provider before taking magnesium supplements [NIH ODS].

Our recommendation

If you are considering Trace Minerals Research Ionic Magnesium 400 mg, start with a lower dose to assess your tolerance, as the 400 mg serving exceeds the tolerable upper intake level for supplemental magnesium [NIH ODS]. You may wish to take half a serving or use this product alongside a diet that already provides magnesium from foods like nuts, seeds, and leafy greens [NIH ODS]. Always consult your healthcare provider before starting any new supplement, especially if you have kidney issues or take medications such as diuretics or antibiotics [NIH ODS].

AI-assisted analysis. Data sourced from NIH DSLD.

Supplement Facts

BrandTrace Minerals Research
Serving Size
Contents2.0 fl. Oz. 59.0 mL
Market StatusOff Market

How to Read This Label

Supplement labels contain several key sections regulated by the FDA:

  • Serving Size — The recommended amount per dose. Always check this — some products require multiple capsules per serving.
  • Amount Per Serving — Shows the quantity of each nutrient in the product, typically in IU (International Units), mg (milligrams), or mcg (micrograms).
  • % Daily Value (%DV) — Indicates how much a nutrient in a serving contributes to a daily diet. 5% DV or less is low; 20% DV or more is high.
  • Other Ingredients — Lists inactive ingredients like fillers, binders, and capsule materials (e.g., gelatin, cellulose, magnesium stearate).
  • Suggested Use — The manufacturer's recommended directions for taking the supplement, including timing and dosage.

Source: FDA Dietary Supplement Labeling Guide

Original Label

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