Product Label

Natural Factors Zinc Chelate 25 mg

Brand: Natural Factors · Form: TABLET [E0155] On Market

Our assessment

The evidence shows that calcium is a foundational mineral for your bone health, but the data on supplementation comes with important safety considerations. For the specific product you asked about — Natural Factors Zinc Chelate 25 mg — the data does not contain any analysis of this product. The ingredient information provided is for calcium, not zinc. Therefore, our assessment must focus on calcium, as that is the only data available.

How it works

Think of calcium as a structural architect for your bones and a calming messenger for your muscles and nerves. It supports bone density and mineral deposition through bone mineralization, and it helps your muscles relax and your nerves signal properly through neuromuscular relaxation [NIH ODS].

Safety profile

FDA received 592,059 adverse event reports across all supplements. 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]. Data not available on side effect report counts specific to calcium from the FDA data provided.

Our recommendation

Because the data provided is for calcium, not zinc, I cannot make a recommendation about Natural Factors Zinc Chelate 25 mg. For calcium, if you are considering supplementation, be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Always consult your doctor before starting any new supplement, especially if you take prescription medications. Data not available for a specific recommendation on the zinc product you asked about.

AI-assisted analysis. Data sourced from NIH DSLD.

Supplement Facts

BrandNatural Factors
Serving Size
Contents90.0 Tablet(s)
Market StatusOn 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

Original Label

View Full DSLD Label (PDF)

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