Nattokinase is a popular enzyme supplement, often sought for its various health benefits. For consumers with dietary sensitivities or allergies, understanding the source of their supplements is paramount. This is particularly true for Provita Nattokinase, a specific formulation of this enzyme. The knowledge base explicitly confirms that Provita Nattokinase is indeed derived from soy. This origin is not just a minor detail but a critical piece of information for a segment of the population. Due to its soy derivation, Provita Nattokinase products carry a clear and unambiguous soy allergen warning directly on their label. This warning serves as a vital alert for individuals who may be susceptible to allergic reactions from soy. It is imperative that anyone with a known soy allergy pays close attention to this declaration. The recommendation is unequivocal: if you have a soy allergy, you should not use Provita Nattokinase. Prioritizing personal health and safety means carefully reviewing supplement labels for allergen information, especially when dealing with ingredients like soy, which can trigger significant adverse reactions in sensitive individuals. Therefore, consumers are urged to exercise caution and consult healthcare professionals if unsure about the suitability of Nattokinase supplements based on their origin and allergen status.