Natural Factors Zinc Citrate 15 mg
Brand: Natural Factors · Form: TABLET [E0155]
Our assessment
The evidence shows that Natural Factors Zinc Citrate 15 mg is a standard-dose mineral supplement. However, based on the data provided, the active ingredient listed in the NIH ODS section is Calcium, not Zinc. This discrepancy means we cannot offer a specific assessment for Zinc Citrate. For the ingredient Calcium, our assessment is that it supports bone mineralization and nerve signaling, but you should be aware of significant safety considerations [NIH ODS].
How it works
Think of calcium as a structural builder and a cellular messenger. It is essential for bone mineralization, helping deposit minerals into your skeleton to maintain density. It also plays a critical role in neuromuscular relaxation, allowing your muscles to relax and your nerves to signal properly after they have been activated [NIH ODS].
Safety profile
The FDA has received a total of 592,059 adverse event reports across all supplement categories [FDA data]. For calcium specifically, the data warns that high intakes might increase the risk of heart disease and prostate cancer. Very high levels in the blood and urine can cause serious issues including poor muscle tone, poor kidney function, 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 such as bisphosphonates, certain antibiotics (tetracycline and fluoroquinolone), levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Because the data provided lists Calcium rather than Zinc as the active ingredient, we cannot give a recommendation for this specific "Zinc Citrate" product based on the information available. If you are seeking a calcium supplement, we advise caution: do not exceed the recommended dietary allowance without medical supervision, be aware of the potential risks to heart and kidney health, and take calcium separately from the medications listed above [NIH ODS]. For the intended Zinc Citrate product, data is not available to form a recommendation.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Natural Factors |
|---|---|
| Serving Size | |
| Contents | 90.0 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