Tag: Vitamin k forms

Decades of research have established that the synthetic form of vitamin K, known as K3 or menadione, is toxic to humans. Therefore, despite its past use, there is no longer a K3 supplement available or approved for human consumption due to significant safety concerns.

Over 97% of a study's adult participants were found to be deficient or insufficient in vitamin K2, underscoring its widespread deficiency. This raises important questions about supplementation, particularly: can you take vitamin K2 long term safely and effectively?