Natural Factors Calcium & Magnesium Citrate With D
Brand: Natural Factors · Form: TABLET [E0155]
Our assessment
The evidence shows that this combination supplement provides a meaningful foundation for bone and nerve health. The data confirms that calcium is essential for bone mineralization and neuromuscular relaxation [NIH ODS]. For most adults, meeting the recommended intake through diet and supplementation is a practical approach.
How it works
Think of calcium as a structural builder and a signal messenger. It supports bone density and mineral deposition while also helping your muscles relax and your nerves communicate properly [NIH ODS]. The inclusion of magnesium and vitamin D in this formula is designed to support calcium absorption and utilization, though specific data on the exact ratios in this product is not available.
Safety profile
FDA received 592,059 total adverse event reports across all supplements, though specific report counts for this product are not available. High calcium intakes may increase the risk of heart disease and prostate cancer. Very high blood levels of calcium 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 certain medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Start by assessing your total daily calcium intake from food and other supplements. If you need additional support, this formula can be a convenient option. Take it with food to improve absorption, and space it at least two hours apart from medications like thyroid hormone or antibiotics. Monitor for any digestive discomfort or unusual symptoms, and discuss your supplement regimen with your healthcare provider, especially if you have a history of kidney stones or heart disease [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Natural Factors |
|---|---|
| Serving Size | |
| Contents | 180.0 Tablet(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