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Does High-fiber foods Affect Vitamin K1?
May affect absorption or how you feel
The short answer
Vitamin K1 is fat-soluble and requires fat for absorption. High-fiber meals impair fat digestion and reduce K1 bioavailability.
How to arrange timing
Take vitamin K1 with a fat-containing meal, separated from high-fiber foods by 2 hours.
Reference
Reference noted for this food and supplement combination: NIH ODS 2024
Important context
The effect can also change with food amount, supplement dose, product formulation, health conditions, and medication use. Ask a doctor or pharmacist first if you take medication, are pregnant or breastfeeding, or have a chronic condition.