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Message: <blockquote data-quote="imhotep" data-source="post: 31437615" data-attributes="member: 562115">Just follow your consultant's advice. I have written enough on Vitamin D since the arrival of Covid. Just do a search.Never take large doses without proper medical supervision.Vitamin K exists in several forms. Most common are K1 & K2. Another synthesized form K3 exists but not recommended for human use. Used in some animal foods but it's controversial.Vitamin K2 some in many forms MK-4 to MK-13 with the length of the side chain determining which. Out of these MK-4, MK-7 and MK-9 are of interest.It's sufficient to know that the difference between the two homologues MK-4 & MK-7 is the half-life. MK-7 has longer half life and stays active over a considerable length of time and many clinicians prefer this form.In fact, MK-7 gets easily absorbed and can attain max serum levels at 6 hours after intake and also could be detected up to 48 hours afterwards. It can maintain much steadier blood levels.</blockquote>

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