Douglas Laboratories Vitamin B12
Brand: Douglas Laboratories · Form: TABLET [E0155]
Our assessment
The evidence shows that calcium is a critical mineral for bone health, but our assessment of this specific product is limited because data for "Douglas Laboratories Vitamin B12" is missing. Data not available for this specific product. For calcium generally, the data confirms it is essential for bone mineralization and neuromuscular relaxation [NIH ODS]. However, you should be aware of significant risks at high intakes.
How it works
Think of calcium as a building block for your skeleton and a messenger for your nerves and muscles. It supports bone density and mineral deposition, and it helps your muscles relax and your nerves signal properly [NIH ODS].
Safety profile
FDA received 592,059 total adverse event reports across all supplements. For calcium specifically, high intakes may increase the risk of heart disease and prostate cancer. High blood and urine levels can cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also reduce absorption of bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Do not take this supplement without consulting your healthcare provider, as the product label is missing. For calcium generally, aim to get your intake from food first. If you need a supplement, avoid exceeding 2,000–2,500 mg total daily intake from food and supplements combined, and always take calcium separately from the medications listed above [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Douglas Laboratories |
|---|---|
| Serving Size | |
| Contents | 60.0 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