: Known for offering higher FU counts (4,000 FU) per serving.
: Prefer products with third-party testing (e.g., ConsumerLab , NSF , or USP ) and those manufactured in cGMP-certified (current Good Manufacturing Practice) facilities. buy nattokinase
: While natto is naturally high in Vitamin K2, many nattokinase supplements have it removed to avoid interfering with blood-thinning medications like warfarin. Check the label if this is a concern for you. : Known for offering higher FU counts (4,000 FU) per serving