GNC Natural Brand Clear Mixing Super Fiber With Probiotics
Brand: GNC Natural Brand · Form: POWDER [E0162] On Market
Our assessment
The evidence shows that GNC Natural Brand Clear Mixing Super Fiber With Probiotics contains calcium as a key ingredient. Our assessment is that calcium is well-documented for bone health, but you need to be careful with dosing and timing. The data provided on this specific product is incomplete—ingredient amounts and specific probiotic strains are not listed. For the calcium component, the NIH ODS confirms it supports bone mineralization and neuromuscular function [NIH ODS].
How it works
Think of calcium as a structural building block for your skeleton and a signaling molecule for your nerves and muscles. It supports bone density and mineral deposition, and it helps with muscle relaxation and nerve signaling [NIH ODS]. If you are using this product as a fiber supplement with added probiotics, the calcium content may offer additional support for your bones, but you should not rely on this product alone for your total daily calcium needs without knowing the exact dose per serving.
Safety profile
Data not available for this specific product’s side effects. However, based on the calcium component, the FDA has received a total of 592,059 adverse event reports across all supplement categories. For calcium specifically, high intakes may increase the risk of heart disease and prostate cancer. High blood and urine calcium levels can cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also 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 only if you know you need additional fiber and a small amount of calcium, but do not rely on it as your primary calcium source since the exact dose per serving is not provided. If you take any prescription medications, especially thyroid medication or antibiotics, take this supplement at least 2 hours apart from those drugs [NIH ODS]. Start with a single serving to check for digestive tolerance, and monitor for constipation or nausea. For a full assessment of your calcium needs, consult your healthcare provider and consider a supplement with a clearly labeled dose.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | GNC Natural Brand |
|---|---|
| Serving Size | |
| Contents | 7.9 oz. 0.5 lb 225.0 g |
| 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