The best replacement for vitamin k2 is k1.

The best alternatives to vitamin k2 are rated as following:
★★★★★  k1
★  vitamin k
★  nattokinase

Your alternative for vitamin k2 is not listed? Suggest!
Speaking about vitamin k2, one probably shouldn't forget about d3.

Other search terms related to vitamin k2 and their ratings are:

★★★★★ d3
★★ nattokinase
★★ vitamin d3
You have in mind a companion for vitamin k2 and it is not yet here? Propose!

Google Trends

Scale is based on the average worldwide traffic of vitamin k2 in all years. Click on graph for more.
vitamin k2
vitamin k