Nutrivioo Vitamin D3 4000IU + K2 (MK-7) | 365 Easy-to-Swallow Tablets. Why Choose Nutrivioo D3 + K2?. While Vitamin D is essential for a healthy lifestyle, it works best when paired with Vitamin K2. Our formula usesK2 (MK-7), the most bioavailable form of Vitamin K, ensuring that these two essential nutrients work in perfect harmony within your body.
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