Nattokinase as NSK-SD, the standardised enzyme produced by fermenting non-GMO soybeans with Bacillus subtilis natto.

Nattokinase varies widely between suppliers, so the NSK-SD designation is what a practitioner is actually specifying. It is the standardised, well-characterised material rather than a generic ferment.

Softgels, hypoallergenic, in the smaller bottle. More than 45 years of Allergy Research Group formulating stands behind it.

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