Side effects of excess vitamin K include enlarged liver, pale skin, increased sweating, difficulty breathing, muscle stiffness, edema, irregular breathing, decreased movement or activity, swollen eyelids or red skin. For young children and infants, vitamin K plays a particularly important role in preventing and fighting bleeding, especially brain and meningeal bleeding. At the same time, it can combine with calcium to help strengthen bones. However, excess vitamin K is also very dangerous because it can cause hemolysis, jaundice and cerebral palsy...