GNC Pro Performance Zinc Magnesium Amino Complex
Brand: GNC Pro Performance · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that this product contains calcium, a mineral essential for bone health and nerve function. However, data on the specific "Zinc Magnesium Amino Complex" formula is limited, and we must rely on the known effects of calcium as listed in the ingredients. Our assessment: you should understand what calcium does in your body and the specific risks associated with it before taking this supplement.
How it works
Think of calcium as a structural builder and signal messenger. It supports bone density and mineral deposition, which is crucial for maintaining strong bones. Calcium also plays a key role in neuromuscular relaxation, helping your muscles relax and your nerves send signals properly [NIH ODS].
Safety profile
The FDA has received a total of 592,059 adverse event reports for all products, but specific data for this GNC product is not available. For calcium itself, the safety profile is clear: high intakes might increase the risk of heart disease and prostate cancer. Very high levels 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]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Data not available for the specific dosage of calcium in this product. Because of the serious potential side effects and medication interactions, do not take this supplement without first consulting your doctor or a registered dietitian. If you are on any of the medications listed, you should avoid calcium supplements unless directed by your physician [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | GNC Pro Performance |
|---|---|
| Serving Size | |
| Contents | 60.0 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