Puritan's Pride Vitamin K-2
Brand: Puritan's Pride · Form: SOFTGEL CAPSULE [E0161] On Market
Our assessment
The evidence shows that Puritan's Pride Vitamin K-2 is a supplement containing calcium, which plays a key role in bone health. Based on the data, we can discuss its benefits, how it works, and the safety profile you need to be aware of.
How it works
Think of calcium as a building block for your bones. It supports bone mineralization and density, and it also helps your muscles relax and your nerves signal properly [NIH ODS]. This makes it a critical nutrient for maintaining skeletal strength and normal muscle function.
Safety profile
The FDA has received 592,059 total adverse event reports for this product category. For calcium specifically, high intakes might 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] [FDA data]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Given the safety concerns, we recommend you do not take this supplement without first consulting your doctor. If you are on any medications or have a history of kidney issues or heart disease, the risks may outweigh the benefits. Your doctor can check your calcium levels and guide you on the safest approach. Data not available for specific dosage or ingredient amounts from the product label.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Puritan's Pride |
|---|---|
| Serving Size | |
| Contents | 30.0 Rapid Release Softgel(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