Some interactions may increase the need for vitamin K:
Antibiotics: Prevent absorption and kill normal bacterial folra.
Anticonvulsants: Affect the body ability to use Vit K.
Bile Acid Sequestrants (Cholestyramine) and Aspirin: Affect absorption.
Mineral oil laxatives: Affect absorption.
Weight Loss Products (Orlistat and olestra): Affect absorption as they prevent absorption of fats.
X-rays and Radiation: Deplete vitamin K levels and raise vitamin K requirements.
Avoid high doses of vitamin K and food rich in vitamin K when anticoagulants are used.