Nature's Way Calcium & Magnesium Mineral Complex
Brand: Nature's Way · Form: CAPSULE [E0159] On Market
Our assessment
Our assessment: The evidence shows that this combination product provides two essential minerals, but you need to be careful about dosing and timing. Calcium supports bone density and nerve signaling, while magnesium is involved in over 300 biochemical reactions [NIH ODS]. However, the total amount of calcium you take from all sources matters for your safety.
How it works
Think of calcium as a structural builder for your bones and a messenger for your nerves and muscles. It supports bone mineralization and helps with neuromuscular relaxation [NIH ODS]. Magnesium works alongside calcium to support muscle relaxation and nerve signaling [NIH ODS]. Taking them together can be convenient, but calcium can reduce the absorption of several medications including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Safety profile
FDA received 592,059 adverse event reports total across all supplement categories. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. 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]. Data not available on specific side effect report counts for this exact combination product.
Our recommendation
Our recommendation: Start by checking your total daily calcium intake from food and supplements — most adults need 1,000-1,200 mg total per day, but more is not better [NIH ODS]. Take this supplement with food and separate it from thyroid medication or antibiotics by at least 2 hours [NIH ODS]. If you have kidney problems or a history of heart disease, talk to your doctor before starting [NIH ODS].
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