GNC Zinc 30 mg
Brand: GNC · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that calcium is a critical mineral for bone health, but the specific product you asked about — GNC Zinc 30 mg — does not have efficacy or safety data available for its ingredient profile in the context of this supplement. For calcium specifically, the data confirms it supports bone mineralization and neuromuscular relaxation [NIH ODS]. However, we cannot make a direct assessment of GNC Zinc 30 mg because data for zinc at this dose is not provided. Our assessment is limited to the calcium data supplied.
How it works
Think of calcium as a structural builder — it deposits into your bone matrix to maintain density and strength. It also acts as a nerve signal regulator, helping your muscles relax after contraction and supporting proper nerve signaling throughout your body [NIH ODS].
Safety profile
FDA received a total of 592,059 adverse event reports across all supplements in the database. For calcium specifically, high intakes may increase the risk of heart disease and prostate cancer. Side effects from excessive calcium include constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS] [FDA data]. Report counts specific to this product are not available.
Our recommendation
Because data on GNC Zinc 30 mg is not provided, we cannot recommend this product. For calcium, aim to meet your needs through food first, and do not exceed 2,000–2,500 mg total daily intake from all sources. If you take calcium supplements, take them separately from medications like thyroid hormone or antibiotics to avoid absorption issues [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | GNC |
|---|---|
| Serving Size | |
| Contents | 100.0 Vegetarian 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