Natural Factors Rx Omega-3 Factors
Brand: Natural Factors · Form: SOFTGEL CAPSULE [E0161]
Our assessment
The evidence shows that calcium is a foundational mineral for bone health, but the supplement requires careful dosing and awareness of potential risks. Data not available for this specific product’s ingredient amounts, so you cannot rely on label claims without verification. Our assessment: only use calcium supplements if your diet consistently falls short, and never exceed 1,200 mg total daily intake from all sources [NIH ODS].
How it works
Think of calcium as a structural builder for your skeleton — it supports bone density and mineral deposition through a process called bone mineralization. It also acts as a neuromuscular relaxant, helping your muscles relax and your nerves signal properly [NIH ODS].
Safety profile
FDA received 592,059 total adverse event reports across all supplements. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer. Very high blood and urine levels can cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [FDA data] [NIH ODS].
Our recommendation
Start by assessing your dietary calcium from dairy, leafy greens, and fortified foods. If you need a supplement, choose one with no more than 500 mg per dose and take it with food. Separate calcium from iron supplements and medications like thyroid hormone or antibiotics by at least 2 hours [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Natural Factors |
|---|---|
| Serving Size | |
| Contents | 240.0 Softgel(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