NOW Iron Complex
Brand: NOW · Form: TABLET [E0155]
Our assessment
Our assessment: The evidence shows that calcium is essential for bone health, but the data also reveals important safety considerations you should be aware of. For the product NOW Iron Complex, data for the specific combination of ingredients is not available, so we must focus on the individual ingredient calcium, which is a key mineral in many supplements.
How it works
Think of calcium as a structural builder and signal regulator for your body. It supports bone density and mineral deposition through bone mineralization, and it also plays a role in neuromuscular relaxation by supporting muscle relaxation and nerve signaling [NIH ODS].
Safety profile
FDA received 592,059 adverse event reports across all supplements. For calcium specifically, safety data shows that high calcium intakes might increase the risk of heart disease and prostate cancer. 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] [FDA data].
Our recommendation
Because the product label for NOW Iron Complex lists "See label" for its specific ingredients, we cannot confirm the exact calcium content or other components. Our recommendation: before taking this supplement, check the product label for the exact amount of calcium per serving. If you are taking bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, or phenytoin, be aware that calcium can reduce their absorption [NIH ODS]. Consult your healthcare provider to determine if this supplement is appropriate for your needs.
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