Natural Factors B12 Methylcobalamin 1000 mcg
Brand: Natural Factors · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that Natural Factors B12 Methylcobalamin 1000 mcg is a straightforward supplement. However, because the product label lists only the ingredient "Calcium," our assessment must focus on calcium, as that is the only data provided. For this specific product, key information on vitamin B12 is not available in the data provided [Data not available].
How it works
Calcium is a mineral that plays a critical role in your body by supporting bone density and mineral deposition. It also helps with neuromuscular relaxation, supporting proper muscle relaxation and nerve signaling [NIH ODS].
Safety profile
FDA received 592,059 adverse event reports across all supplements. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer. High levels in your 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 [FDA data] [NIH ODS]. Calcium can also reduce the absorption of medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Given that the data shows this product lists calcium as its ingredient, you should be cautious with dosing. Do not exceed the recommended intake without consulting a healthcare provider, especially if you take any of the listed medications. Because the product is labeled as B12 but the provided data only covers calcium, we recommend verifying the actual ingredient list on the bottle before use [Data not available].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Natural Factors |
|---|---|
| Serving Size | |
| Contents | 90.0 Chewable Tablet(s) |
| Market Status | On 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