The Peptide Report

Vitamin K2 MK-7 vs MK-4: Best Form With Vegan D3 (2026) - DrSeinfeld.com Operated by Ginspire Health LLC
May 12, 2026
MK-7 and MK-4 are both forms of vitamin K2 — but they behave very differently in the body. Here's how each performs when paired with vegan D3, and which one belongs in your daily routine.