DRI: 120 mcg /day
UL: No tolerable upper limit has been set.
Toxicity: No toxicity reported with high dosage.
Vitamin K1 is found chiefly in leafy green vegetables such as spinach, swiss chard, and Brassica (e.g. cabbage, cauliflower, broccoli, and brussels sprouts); some fruits such as avocado, kiwifruit and grapes are also high in vitamin K.
It is absorbed from Jejunum & ileum.
It is stored and oxidised in liver.
- Vitamin K reduces the severity of arthritis and provides a more natural balance and function of bone and chemicals at the bone joint.
- Vitamin K is a group of structurally similar, fat soluble vitamins that are needed for the post translational modification of certain proteins required for blood coagulation and in metabolic pathways in bone and other tissue.
- Vitamin K plays an important role in blood clotting and bone metabolism
- Vitamin K supplements may improve bone mass in postmenopausal women.
- Prevents calcification of arteries and other soft tissue.
It is very rare in adults.
Vitamin K deficiency include individuals who suffer from liver damage or disease (e.g. alcoholics), people with cystic fibrosis, inflammatory bowel diseases or those who have recently had abdominal surgeries.