Vitamin K1 Other names: alpha-Phylloquinone Phytylmenadione Phylloquinone Phytonadione Phytomenadione Phytylmenadione

Chemical formula: C₃₁H₄₆O₂  Molecular mass: 450.696 g/mol  PubChem compound: 5284607

Interactions

Vitamin K1 interacts in the following cases:

Coumarin anticoagulants

Vitamin K1 competes with the effect of coumarin anticoagulants.

Pregnancy

There is no specific evidence regarding the safety of vitamin K in pregnancy but, as with most drugs, the administration during pregnancy should only occur if the benefits outweigh the risks.

Vitamin K is not recommended for pregnant women as prophylaxis of vitamin K deficiency bleeding in the newborn.

Effects on ability to drive and use machines

None.

Adverse reactions


There have been reports of anaphylactoid reactions after intravenous injections of vitamin K. Very rarely, venous irritation or phlebitis has been reported in association with intravenous administration of vitamin K. Rarely, injection site reactions may occur which may be severe, including inflammation, atrophy and necrosis.

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Review your medication to ensure that there are no potentially harmful drug interactions or contraindications.

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