MegaFood Methyl B12
Brand: MegaFood · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that MegaFood Methyl B12 is a straightforward B12 supplement. Our assessment: this product is generally safe for most people, but you should be aware that the active ingredient is supported by data for bone and nerve health, not necessarily for energy boosting as commonly marketed. Data on the specific brand is not available, so we rely on general ingredient data [NIH ODS].
How it works
Think of the active ingredient, calcium (which is listed in the data for this product), as a structural support — it helps your body maintain bone density and supports proper nerve signaling through neuromuscular relaxation [NIH ODS]. The mechanism involves bone mineralization and muscle relaxation, which are essential for daily function [NIH ODS].
Safety profile
FDA received 592,059 total adverse event reports across all supplements, but specific reports for this product are not available. For calcium specifically, side effects can include constipation, nausea, and weight loss [NIH ODS]. High levels may cause poor muscle tone, poor kidney function, low phosphate levels, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. High calcium intakes might also increase the risk of heart disease and prostate cancer [NIH ODS].
Our recommendation
Start with the dose listed on the label. Be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. If you take any of these medications, separate your supplement by at least 2 hours. Data not available on specific B12 dosing for this product, so follow the label instructions and consult your healthcare provider [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | MegaFood |
|---|---|
| Serving Size | |
| Contents | 90.0 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