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Vitamin K2 MK-7 vs MK-4: Best Form With Vegan D3 (2026) - DrSeinfeld.com Operated by Ginspire Health LLC
Vitamin K2 MK-7 vs MK-4: Best Form With Vegan D3 (2026)
May 21, 2026
MK-7 and MK-4 are the two dominant K2 isoforms — but they behave very differently in the body. Here's how to choose the right form to pair with vegan D3 for bone, heart, and immune support.