I regularly order Nattokinase from them as well as other products. The Nattokinase had effectively prevented blood clots in both myself and my son-in-law. Both of us have genetic blood clotting conditions. Before the nattokinase, even on warfarin, my son-in-law had numerous serious blood clots including in his lungs. I have had dozens of lung blood clots and several deep vein thromboses, but no problems since taking nattokinase daily.