GNC Natural Brand Clear Mixing Super Fiber
Brand: GNC Natural Brand · Form: POWDER [E0162] On Market
Our assessment
The evidence shows that GNC Natural Brand Clear Mixing Super Fiber contains calcium, a mineral essential for bone health. Our assessment is that this product may help you meet your daily calcium needs, but you need to be aware of the potential risks and interactions associated with high calcium intake. Data on the total number of adverse event reports for calcium alone is not available, but the FDA has received 592,059 total adverse event reports across all dietary supplements [FDA data].
How it works
Think of calcium as a building block for your skeleton. It supports bone mineralization and density, and it also plays a critical role in neuromuscular relaxation and nerve signaling [NIH ODS]. This means calcium helps your muscles relax after contracting and helps your nerves send signals properly [NIH ODS].
Safety profile
While calcium is essential, high intakes come with significant risks. Some research suggests that high calcium 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]. Additionally, calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Our recommendation is to use this product cautiously. Before starting, check your total calcium intake from all sources—food and supplements—to avoid exceeding the upper limit. If you take any of the medications listed above, separate your calcium supplement by at least two hours, or as directed by your healthcare provider. Always consult with your doctor or a pharmacist to ensure this product is safe for you, especially if you have kidney issues or a history of heart disease. Data on the specific amount of calcium per serving is not available, so you cannot calculate your exact intake from this product [Data not available].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | GNC Natural Brand |
|---|---|
| Serving Size | |
| Contents | 7.9 oz. 225.0 Gram(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