The Peptide Report

Vitamin K2 MK-7 vs MK-4: Best Form With Vegan D3 (2026)
Apr 29, 2026
MK-7 and MK-4 are the two dominant forms of vitamin K2 — but they behave very differently in the body. Here's how they compare when paired with vegan D3, and why the right combination matters for once-daily use.