GNC Coral Calcium 400 mg
Brand: GNC · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that calcium is essential for bone health, but the benefits of a coral calcium supplement over standard calcium sources are not supported by the data provided. For most adults, the key is meeting your total calcium needs from diet and supplements without exceeding safe upper limits [NIH ODS].
How it works
Think of calcium as a structural building block for your bones and a signal regulator for your nerves and muscles. It supports bone density through mineralization and helps your muscles relax and nerves signal properly after contraction [NIH ODS].
Safety profile
Data not available for specific side effects of this product. However, for calcium supplements in general, high intakes may increase the risk of heart disease and prostate cancer [NIH ODS]. Excess calcium can cause constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. The FDA has received a total of 592,059 adverse event reports for this product category [FDA data].
Our recommendation
We recommend you get your calcium from food first, as it is better absorbed. If you need a supplement, choose a standard calcium product with a known dose, such as 400 mg of elemental calcium. Be aware that calcium can reduce absorption of medications like bisphosphonates, tetracycline antibiotics, and levothyroxine, so take it at a separate time [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | GNC |
|---|---|
| Serving Size | |
| Contents | 180.0 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