Natural Factors B12 1000 mcg
Brand: Natural Factors · Form: TABLET [E0155]
Our assessment
The evidence shows that B12 is a critical nutrient, but this product contains 1000 mcg of B12, which is significantly above the standard RDA. For most people, a daily dose of 2.4 mcg is sufficient, though higher doses are sometimes used for specific deficiencies or absorption issues. Data not available for the specific brand or ingredient interactions for this product.
How it works
Think of B12 as a key player in your body's energy production and nervous system maintenance. It helps form red blood cells and supports DNA synthesis. While calcium is not in this product, it is important to note that calcium supports bone mineralization and neuromuscular relaxation [NIH ODS].
Safety profile
FDA received 592,059 total adverse event reports across all supplements. Data not available for specific side effects of this B12 product. For calcium, high levels can cause constipation, nausea, weight loss, and abnormal heart rhythms [NIH ODS] [FDA data].
Our recommendation
Start with a standard 2.4 mcg daily dose from food sources unless a deficiency is confirmed. If you choose this 1000 mcg supplement, consult your doctor first, especially if you take medications like bisphosphonates or levothyroxine [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Natural Factors |
|---|---|
| Serving Size | |
| Contents | 180.0 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