Dr. Mercola Calcium with Vitamins D3 & K2
Brand: Dr. Mercola · Form: CAPSULE [E0159]
Our assessment
The evidence shows that Dr. Mercola Calcium with Vitamins D3 & K2 is a combination supplement designed to support bone health. Our assessment: for most people, getting calcium from food is preferable, but this product can help fill a gap if your diet is consistently low in calcium. The addition of vitamins D3 and K2 is a thoughtful formulation, as these nutrients work synergistically with calcium [NIH ODS].
How it works
Think of calcium as the building block for your bones and teeth, essential for bone mineralization and density [NIH ODS]. Vitamin D3 acts as a master regulator, helping your body absorb that calcium from your digestive tract. Vitamin K2 then directs the calcium to your bones and away from soft tissues like your arteries [NIH ODS]. This team effort supports neuromuscular relaxation and nerve signaling [NIH ODS].
Safety profile
FDA has received a total of 592,059 adverse event reports for this product category. High calcium intakes from supplements might increase the risk of heart disease and prostate cancer [NIH ODS]. Side effects of excessive calcium include constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. You should also be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Start by evaluating your dietary calcium intake before adding a supplement. Do not exceed the Tolerable Upper Intake Level for calcium without a doctor's supervision. Take this supplement with food and separate it from any medications listed above by at least 2 hours [NIH ODS]. Our recommendation: consult your healthcare provider to determine if this specific combination is right for you, especially if you have a history of kidney stones or heart conditions.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Dr. Mercola |
|---|---|
| Serving Size | |
| Contents | 30.0 Capsule(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