Natural Factors B12 Methylcobalamin 1000 mcg
Brand: Natural Factors · Form: TABLET [E0155]
Our assessment
The evidence shows that while this product contains a specific form of vitamin B12 (methylcobalamin), the data provided does not include any studies or adverse event reports specifically for this ingredient. The data available is for calcium, which is a different ingredient entirely. Based on the information provided, we cannot make a direct assessment of Natural Factors B12 Methylcobalamin 1000 mcg. For the ingredient calcium, which is included in the data, research supports its role in bone health, but high intakes carry significant risks [NIH ODS].
How it works
Regarding the calcium data provided, think of it as a structural and signaling mineral. It supports bone density and mineral deposition, and it also plays a role in neuromuscular relaxation and nerve signaling [NIH ODS]. No mechanism data was provided for vitamin B12.
Safety profile
Data not available for vitamin B12. For calcium, the FDA has received a total of 592,059 adverse event reports across all supplements, but the number specifically for calcium is not stated. High calcium intake is linked to risks including constipation, nausea, weight loss, extreme tiredness, abnormal heart rhythms, and a high risk of death from heart disease. High levels in the blood and urine can also cause poor muscle tone and kidney function issues [NIH ODS] [FDA data].
Our recommendation
Because the data provided does not cover vitamin B12 or this specific product, we cannot offer a recommendation for Natural Factors B12 Methylcobalamin 1000 mcg. If you are considering a calcium supplement, be aware that high intakes can be dangerous. You should discuss your supplement needs with your healthcare provider, as calcium can also reduce the absorption of medications like bisphosphonates, certain 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