What are the signs and symptoms of vitamin K toxicity?

Updated: Jun 01, 2020
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Vitamin K toxicity is typically seen in formula-fed infants or those receiving synthetic vitamin K-3 (menadione) injections. Because of its toxicity, menadione is no longer used for treatment of vitamin K deficiency.

The effects of vitamin K toxicity can include jaundice in newborns, hemolytic anemia, and hyperbilirubinemia. Toxicity also blocks the effects of oral anticoagulants.

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