It seems like almost all the MK4/MK7 products on the market including life extensions are sourced from soy natto or other soy products.
I found a product called ADK by codelabs on amazon. It has 900mcg vitamin A (all retinyl palmitate), 5000iu d3, 1000mcg K1, 1500 mcg K2 MK4 and 300 mcg K2 Mk7. They said they source their vitamin K from algae using bacterial fermentation and synthesis.
I was wondering if the Algae sourced K supplements are safe to use, and superior to soy natto sourced ones? I heard soy natto being a fermented soy product, has much less goitrogens/phytoestrogens than regular soy protein/fat products. Is there an issue with consuming K1 or MK7 in these dosages? I remember reading that MK7 and K1 interfere with 5ar.
I found a product called ADK by codelabs on amazon. It has 900mcg vitamin A (all retinyl palmitate), 5000iu d3, 1000mcg K1, 1500 mcg K2 MK4 and 300 mcg K2 Mk7. They said they source their vitamin K from algae using bacterial fermentation and synthesis.
I was wondering if the Algae sourced K supplements are safe to use, and superior to soy natto sourced ones? I heard soy natto being a fermented soy product, has much less goitrogens/phytoestrogens than regular soy protein/fat products. Is there an issue with consuming K1 or MK7 in these dosages? I remember reading that MK7 and K1 interfere with 5ar.