Natural Factors B12 Methylcobalamin 1000 mcg
Brand: Natural Factors · Form: TABLET [E0155]
Our assessment
The evidence shows that this product contains methylcobalamin, a form of vitamin B12. However, the data provided does not include any specific information on vitamin B12, its dosage, or its effects. Our assessment is limited by the data available. For the ingredient listed, calcium, the data shows it supports bone density and nerve signaling [NIH ODS].
How it works
Think of calcium as a structural builder — it is essential for bone mineralization and supports neuromuscular relaxation, which helps your muscles and nerves function properly [NIH ODS]. No specific mechanism data is available for the methylcobalamin in this product.
Safety profile
Data not available for methylcobalamin. For calcium, safety concerns include that high intakes might increase the risk of heart disease and prostate cancer. High blood and urine calcium 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 [NIH ODS]. The FDA has received a total of 592,059 adverse event reports across all products, but specific report counts for this supplement are not provided [FDA data].
Our recommendation
Because the provided data does not include specific information on vitamin B12 methylcobalamin, we cannot make a confident recommendation for this product. You should consult your healthcare provider to determine if you need a B12 supplement. If you are taking calcium supplements, be aware they can reduce the absorption of medications like bisphosphonates, tetracycline antibiotics, and levothyroxine [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Natural Factors |
|---|---|
| Serving Size | |
| Contents | 90.0 Chewable 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