Product Label

Swanson Magnesium L-Threonate

Brand: Swanson · Form: CAPSULE [E0159] On Market

Our assessment

The evidence shows that this product contains calcium, a mineral critical for bone health and nerve function [NIH ODS]. However, data for Swanson Magnesium L-Threonate specifically is limited to what is provided. Our assessment: you should understand that calcium supplementation requires careful consideration due to potential risks, and data for the specific product named is not available beyond its listed ingredient.

How it works

Think of calcium as a structural builder and a nerve messenger. It supports bone density and mineral deposition, and it helps your muscles relax and your nerves signal properly [NIH ODS]. The product's label lists calcium as an ingredient, but specific details about the form or dosage are not provided in the data.

Safety profile

FDA received 592,059 adverse event reports across all supplements, but specific report counts for this product are not available [FDA data]. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. High levels in the blood and urine can cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also reduce absorption of medications including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

Our recommendation

Because specific data on Swanson Magnesium L-Threonate's calcium content, dosage, and studies are not available, we cannot recommend this product for a specific purpose. If you are considering calcium supplementation, work with your healthcare provider to assess your dietary intake and any medication interactions. Do not exceed recommended intakes without medical supervision [NIH ODS].

AI-assisted analysis. Data sourced from NIH DSLD.

Supplement Facts

BrandSwanson
Serving Size
Contents90.0 Veggie Capsule(s)
Market StatusOn 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

View Full DSLD Label (PDF)

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