Dr. Mercola Vitamin K2

Our assessment

The evidence shows that this product is formulated with Vitamin K2, but based on the data provided, we cannot assess its specific benefits or risks. The data we have on calcium, a related mineral, indicates it supports bone density and nerve signaling [NIH ODS]. However, without specific data on Vitamin K2 from the provided materials, we must be cautious. You should know that high calcium intakes, which could be a concern if you take multiple supplements, might increase the risk of heart disease and prostate cancer [NIH ODS].

How it works

Think of calcium as a key structural component for your bones. It works through bone mineralization, helping to deposit minerals and maintain bone density. It also supports neuromuscular relaxation, which is important for muscle and nerve function [NIH ODS]. The role of Vitamin K2 in this product is not detailed in the provided data.

Safety profile

Data not available for this specific product's side effects. For context, the FDA has received a total of 592,059 adverse event reports across all supplements, but a breakdown for this product is not provided. For calcium specifically, high levels can cause poor muscle tone, constipation, nausea, weight loss, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS].

Our recommendation

We cannot make a specific recommendation for this product due to missing data. You should be aware that calcium supplements can reduce the absorption of medications like bisphosphonates, tetracycline antibiotics, and levothyroxine [NIH ODS]. Before starting this supplement, consult your healthcare provider to ensure it does not interfere with any medications you take. Always choose supplements from reputable brands and discuss your individual needs with a professional.

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