NOW Zinc 50 mg
Brand: NOW · Form: TABLET [E0155]
Our assessment
The evidence shows that this product contains 50 mg of zinc, which is significantly above the recommended dietary allowance for most adults. For context, the RDA for zinc is 8 mg for women and 11 mg for men. While zinc is essential for immune function, taking 50 mg daily is a high dose that should only be used under medical supervision.
How it works
Zinc is a master regulator of your immune system, helping to activate T-cells and support your body's defense against pathogens. However, the specific data provided for this product's ingredient is for calcium, not zinc. According to the available data, calcium supports bone mineralization and neuromuscular relaxation [NIH ODS]. Data on zinc's mechanism is not available in the provided information.
Safety profile
Based on the FDA adverse event database, there have been 592,059 total reports across all supplements [FDA data]. Specific side effects for zinc at this dose are not available in the provided data. However, for calcium, safety risks include that high levels in the blood and urine can cause poor muscle tone, poor kidney function, constipation, nausea, weight loss, extreme tiredness, and abnormal heart rhythms [NIH ODS].
Our recommendation
Data not available for a specific recommendation on this product. Because the provided data does not include specific safety or efficacy information for zinc at this dose, we cannot make a confident recommendation. You should consult your healthcare provider before taking 50 mg of zinc daily, as this is a high dose that may cause copper deficiency or other adverse effects not covered in the provided data.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | NOW |
|---|---|
| Serving Size | |
| Contents | 100.0 Tablet(s) |
| Market Status | Off 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