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Common Sources of Vitamin K – Food vs. Supplements

You’ll find vitamin K in two main forms:

• Vitamin K1 (phylloquinone): Abundant in leafy green vegetables like kale, spinach, broccoli, and Brussels sprouts.
• Vitamin K2 (menaquinones): Found in fermented foods such as natto, cheese, egg yolks, and some meats.

Many multivitamins or bone-health formulas include added vitamin K, often as K2 for its potential role in calcium metabolism. While food sources rarely cause sudden shifts, concentrated supplements can deliver much higher amounts in one dose.