Xtend and Xtend+ contains Vitamin K - Is this a problem for people on blood-thinning medication?

Xtend contains 85 micrograms of vitamin K (25 mcg K1 and 60 mcg K2), which is 113% of the DRV (Dietary Reference Value).

Xtend+ contains 60 micrograms of vitamin K (60 mcg K2), which is 80% of the DRV (Dietary Reference Value).

Vitamin K is known to compete with anticoagulant medication, so it is important to tell your doctor that you want to start taking the product. Then your doctor should be monitoring your blood-clotting time and adjust the dose of your medication when necessary.