Natural Factors Zinc Citrate 15 mg
Brand: Natural Factors · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that calcium is a critical mineral for your body, but the safety profile requires careful attention. For a 15 mg zinc supplement, this product contains no calcium, so calcium-specific interactions and risks do not apply here. Data on this specific product's effects is limited to the ingredient label.
How it works
Calcium supports bone mineralization by helping deposit minerals into your bone matrix, and it aids neuromuscular relaxation by supporting nerve signaling and muscle function [NIH ODS].
Safety profile
FDA has received a total of 592,059 adverse event reports across all supplement products. For calcium specifically, some research suggests that high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. High levels of calcium 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 reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Because this product contains zinc citrate 15 mg and no calcium, you do not need to worry about calcium-specific side effects from this supplement. If you take any of the medications listed above, be aware that calcium supplements may reduce their absorption [NIH ODS]. For this specific product, data on long-term safety and efficacy is not available beyond the ingredient label. Consult your healthcare provider before starting any new supplement.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Natural Factors |
|---|---|
| Serving Size | |
| Contents | 90.0 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