Superior Source Vitamin K 100 mcg
Brand: Superior Source · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that calcium is a critical mineral for your health, but it comes with important safety considerations. Our assessment is that you should approach this supplement carefully, as the data reveals significant risks at high intakes [NIH ODS].
How it works
Think of calcium as a foundational building block for your body. It supports bone mineralization and density, helps your muscles relax after contracting, and plays a key role in nerve signaling [NIH ODS].
Safety profile
FDA received 592,059 adverse event reports for this product category. The data shows that high levels of calcium in your blood and urine can lead to 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 [FDA data]. Some research also suggests that high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. Additionally, calcium can reduce the absorption of medications including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Data on the specific safety profile of Vitamin K 100 mcg is not available.
Our recommendation
Given the significant risks associated with high calcium intake, you should only use this supplement if you have a confirmed deficiency. Start with the lowest effective dose and monitor your intake from all sources, including food. Be aware that calcium can interfere with many common medications, so take it separately from your prescriptions. Data on the specific benefits and risks of the Vitamin K in this product is not available.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Superior Source |
|---|---|
| Serving Size | |
| Contents | 100.0 MicroLingual(R) Instant Dissolve 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