Natrol Calcium With Magnesium
Brand: Natrol · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that calcium is essential for bone health, but you should be aware of the specific risks and interactions. This product combines calcium with magnesium, and our assessment is that while calcium supports bone mineralization and nerve signaling, you need to manage your intake carefully to avoid potential side effects [NIH ODS].
How it works
Think of calcium as a structural builder and a signal messenger. It supports bone density and mineral deposition, and it also helps with neuromuscular relaxation and nerve signaling [NIH ODS]. This means it works to keep your bones strong while helping your muscles relax and your nerves communicate properly [NIH ODS].
Safety profile
Data not available for specific side effects of this product. However, FDA has received a total of 592,059 adverse event reports across all supplements. For calcium specifically, some research suggests that high intakes might increase the risk of heart disease and prostate cancer. 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].
Our recommendation
Our recommendation is to be cautious with calcium supplementation. Be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. You should take this supplement at a different time than those medications. For most people, it is best to get calcium from food first, and only use supplements if your diet is low in calcium [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Natrol |
|---|---|
| Serving Size | |
| Contents | 120.0 Tablet(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