Vitamin K

Vitamin K is essential for

• normal clotting in blood

Vitamin K-deficiency may occur:

• by disturbed intestinal uptake
• by therapeutic or accidental intake of vitamin K-antagonists
• by nutritional vitamin K-deficiency (very rarely)

Best Sources of Vitamin K

Vitamin K is widespread in food in small quantities. The best sources are dark-green leafy vegetables and the skins of fruit and vegetables

Recommended Intakes for Adults:

Deficiency in adults is extremely rare, so no UK Reference Nutrient Intakes (RNI) or USA Recommended Daily Amount (RDA) have been set.