Nature's Bounty Magnesium 250 mg
Brand: Nature's Bounty · Form: SUPPLEMENT FORM, OTHER [E0172] On Market
Our assessment
The evidence shows that the primary ingredient in this supplement is calcium, not magnesium as the product name suggests. For bone health and nerve function, calcium is a well-established mineral, but you should be aware of the specific dosage and potential risks. Our assessment: this product provides calcium at 250 mg per serving, which is a relatively low dose compared to the RDA of 1,000 mg for most adults [NIH ODS].
How it works
Think of calcium as a structural builder for your bones and a signal regulator for your nerves. It supports bone density and mineral deposition, and it helps your muscles relax and your nerves send signals properly [NIH ODS].
Safety profile
FDA received 592,059 total adverse event reports for products like this. Data not available on specific report counts for this product. High levels of calcium 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]. Some research suggests that high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS].
Our recommendation
We recommend you verify the label carefully, as the product name lists "Magnesium" but the data provided describes calcium. If you are taking calcium supplements, be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Start with a low dose and consult your healthcare provider to check your total calcium intake from all sources [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Nature's Bounty |
|---|---|
| Serving Size | |
| Contents | 100.0 Caplet(s) |
| Market Status | On 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