s okay to get less than the vitamin K1 RDA, since the body makes
vitamin K. The
vitamin K RDA is based on
vitamin K1, not
vitamin K2 MK-7. Humans were meant to eat small amounts of vitamin K1 (not MK-7) from vegetables and other foods. Vitamin K (K1, K2 MK-7, K2 MK-4) supplements can cause liver damage, kidney damage (kidney tubal degeneration), dangerous blood clots, headaches, fatigue, weakness, irritability, dizziness, fainting, anemia, increased perspiration, skin rashes, and skin itching.