Nature's Way Calcium & Magnesium
Brand: Nature's Way · Form: CAPSULE [E0159]
Our assessment
Our assessment: For supporting bone health, calcium and magnesium are foundational. The evidence shows that calcium is critical for bone mineralization and neuromuscular function [NIH ODS]. However, you need to be cautious with dosing, as high intakes carry notable risks.
How it works
Think of calcium as the building block for your bones. It supports bone density and mineral deposition, while also helping your muscles relax and nerves signal properly [NIH ODS]. Magnesium works alongside calcium to support these processes, though specific data for this combination product is limited.
Safety profile
FDA received 592,059 total adverse event reports across all supplement categories. 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 the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Start with a moderate dose and take it with food. Be aware that calcium supplements may interfere with thyroid medication and certain antibiotics — separate these by at least 2 hours [NIH ODS]. Monitor for side effects like constipation or nausea. If you have a history of kidney stones or heart disease, consult your doctor before starting. Data not available for specific dosages or magnesium content in this product.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Nature's Way |
|---|---|
| Serving Size | |
| Contents | 100.0 Capsule(s) |
| Market Status | Off 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