Nature's Way Magnesium Complex 500 mg
Brand: Nature's Way · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that while this product contains calcium, the specific benefits for you depend on your current dietary intake and health status. Calcium is well-known for supporting bone density and neuromuscular relaxation [NIH ODS]. However, we must be clear: the data for this specific "Nature's Way Magnesium Complex 500 mg" product is incomplete. The brand and full label information are listed as "See label," which means we cannot confirm the exact dosage or presence of other ingredients without that label. Our assessment is that calcium can be beneficial, but you should not rely on this product as your sole source without verifying the label.
How it works
Think of calcium as a structural building block and a cellular signaler. It works through bone mineralization, where it helps deposit minerals to keep your skeleton dense and strong [NIH ODS]. At the same time, it supports neuromuscular relaxation, meaning it helps your muscles relax after contracting and ensures your nerves send signals properly [NIH ODS]. For these roles to function correctly, your body needs a precise balance of calcium and other minerals.
Safety profile
Safety is a critical concern here. The FDA has received a total of 592,059 adverse event reports across all supplements, but specific report counts for this product or calcium alone are not provided [FDA data]. Based on the data, high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. Very 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]. Additionally, calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Data on side effects specific to this product is not available.
Our recommendation
Our recommendation is to proceed with caution. First, check the product label to confirm the exact calcium dosage, as the data here is incomplete [See label]. Do not take this supplement if you are on any of the medications listed above without consulting your doctor. For most adults, calcium needs are best met through food sources first, as high-dose supplements carry the risks noted [NIH ODS]. If you choose to use this product, start with a low amount and monitor for side effects like constipation or nausea. Always inform your healthcare provider about any supplements you take.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Nature's Way |
|---|---|
| Serving Size | |
| Contents | 100.0 Capsule(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