Pure Encapsulations NSK-SD (Nattokinase) 100mg 120cPure Encapsulations NSK SD delivers 100mg of nattokinase, a fibrinolytic enzyme that promotes healthy circulation and cardiovascular function. This specialized form supports the body's natural ability to maintain balanced clottingessential for preventing excessive bleeding while preventing unwanted clot formation that could compromise blood flow. NSK SD is derived from natto but processed to eliminate the characteristic sticky texture and pungent