Doctor's Best Fully Active B12
Brand: Doctor's Best · Form: CAPSULE [E0159]
Our assessment
The evidence shows that calcium is essential for bone health, but the data also reveals important safety considerations you need to know. For Doctor's Best Fully Active B12, this product contains calcium according to the label, and we must evaluate it based on the available data [NIH ODS].
How it works
Calcium acts as a master regulator for your body. It supports bone mineralization by helping deposit minerals into your bone structure, and it also plays a key role in neuromuscular relaxation, which helps your muscles relax and your nerves signal properly [NIH ODS].
Safety profile
The FDA has received a total of 592,059 adverse event reports for products in this category. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer. High levels of calcium in the 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 [NIH ODS] [FDA data].
Our recommendation
You should be cautious with calcium supplementation. The data shows that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin, so take these at different times of day [NIH ODS]. Data not available on the specific dosage for this product, so consult your healthcare provider before starting [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Doctor's Best |
|---|---|
| Serving Size | |
| Contents | 60.0 Veggie Cap(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