Natural Factors Vitamin B12 1000 mcg
Brand: Natural Factors · Form: TABLET [E0155]
Our assessment
The evidence shows that calcium is essential for bone health, but the data on this specific product is limited. Since the product label lists "Natural Factors Vitamin B12 1000 mcg" but the provided data only covers the mineral calcium, we cannot assess the effectiveness or safety of the specific Vitamin B12 product you asked about. Our analysis below is based strictly on the calcium data provided.
How it works
Calcium acts as a master regulator for your body. It supports bone density through mineralization and helps your muscles relax and nerves signal properly [NIH ODS]. Think of it as the structural foundation for your skeleton and a key player in your neuromuscular system.
Safety profile
FDA received a total of 592,059 adverse event reports across all supplements in this data set. For calcium specifically, high intakes may increase the risk of heart disease and prostate cancer [NIH ODS]. Side effects from very high blood and urine levels include 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 [NIH ODS].
Our recommendation
You should be cautious with calcium supplements. The data shows calcium can reduce absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Because the data provided does not include specific dosage or benefit information for this product, we cannot recommend it. Data for the Vitamin B12 ingredient itself is not available in this report, so consult your healthcare provider for personalized advice.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Natural Factors |
|---|---|
| Serving Size | |
| Contents | 60.0 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