What are the side effects of aqueous colloidal solution of vitamin K1?

Aqueous colloidal solution of vitamin K1 is associated with the following side effects:
  • unusual taste in the mouth, unusual skin sensations, discolored skin, dizziness, compromised pulse, sweating, low blood pressure and problems breathing
  • allergic reactions (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives)
In addition, when delivered intramuscularly or intravenously, the rapid accumulation of vitamin K in the body can lead to an overdose that interferes with basic bodily functions. In these cases, cardiac or respiratory failure can lead to death.