Vitamin K Supplement Guide
Evidence-based information on Vitamin K benefits, dosage, safety, and food sources — sourced from NIH, FDA, and PubMed.
Our assessment
The evidence shows that vitamin K is an essential nutrient, but data on its use as a general dietary supplement for most adults is limited. Data not available for specific health benefits beyond its known role in blood clotting and bone metabolism NIH ODS ↗.
How it works
Think of vitamin K as a key activator — it helps your body produce proteins needed for blood clotting and for building strong bones NIH ODS ↗.
Safety profile
Data not available for specific adverse event reports from the FDA data provided. Data not available for side effects from the provided FDA data. Data not available for report counts FDA FAERS ↗.
Our recommendation
Data not available to make a specific dosing recommendation. Most adults get enough vitamin K from a balanced diet containing green leafy vegetables. Speak with your healthcare provider before starting any new supplement NIH ODS ↗.
AI-assisted analysis based on NIH ODS, FDA, and PubMed data. Citations are linked to original sources.
Clinical Evidence
Vitamin K has been studied in 3+ clinical studies:
Emerging Patterns in Dietary Supplement Use Among US Adults, 1999-2023.Lam CS · 2026
Development of a synbiotic dietary supplement containing potential Next Generation Probiotics for mo...Esposito A · 2026
Patterns and Determinants of Dietary Supplement Use and Their Public Health Implications Among Adult...Al Turki M · 2025