Vitamin K2 Mk7 100mcg Bone Support 30 Softgels Swanson. What is Swanson Ultra Natural Vitamin K2?. What is Swanson Ultra Natural Vitamin K2 used for?. That source is the Soybean. Vitamin K2 may not be a headline grabbing nutrient or antioxidant like vitamins C or A but there can be no doubting its importance to your ongoing health.
