Key Benefits

• Delivers 4,000 Fibrinolytic Units (FU) of nattokinase per capsule.

• Features a naturally sourced enzyme from traditional soy fermentation.

• Made with non-GMO ingredients for a clean daily choice.

Experience the tradition of natto in a convenient capsule. Swanson’s Nattokinase 4,000 Fibrinolytic Units is crafted from natto, a Japanese food made by fermenting soybeans with Bacillus subtilis natto. Each capsule offers a precise 4,000 FU of nattokinase, making it easy to add a fermented soy-based enzyme to your daily routine.

Formulated without artificial additives, colours, or preservatives, this non-GMO supplement is designed for those seeking a straightforward, food-based source of nattokinase as part of a balanced lifestyle.

Swanson began in 1969 in Fargo, North Dakota, with founder Leland Swanson’s vision to make wellness simple, affordable, and science-driven. Motivated by his personal health journey, he built a brand rooted in transparency, quality, and research-backed innovation. Swanson Health products are manufactured in GMP-certified facilities and undergo thorough in-house and third-party testing to ensure purity and potency. Each formulation reflects a blend of scientific research, traditional use, and modern nutritional needs. With Swanson, you receive trusted, high-quality supplements designed to support your health goals every day.

With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.

Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.

Nattokinase (Providing 4,000 Fibrinolytic Units of Activity per Capsule) (Soy (Soybeans)), Maltodextrin, Microcrystalline Cellulose (Plant Fiber), Capsule Shell (Gelatin), Anti-Caking Agent (Magnesium Stearate), Medium Chain Triglycerides (Palm Oil)

For allergens, see ingredients in Bold.

As a dietary supplement, take one capsule per day with water.

WARNING: For adults only. Consult your healthcare provider before using this or any product if you are pregnant or nursing, have a medical condition or are taking medication, especially blood-thinning medication.

Keep out of the reach of children. Do not use if seal is broken. Store in a cool, dry place.

Additional Information:

Food supplements and foods sold by Healf should not be used as a substitute for a varied, balanced diet and healthy lifestyle.

If you are pregnant, breastfeeding, have a medical condition, or are taking any medications, please consult with a healthcare professional before use. Use products only if the seal is intact. Store in a cool, dry place, out of the reach of young children. Do not exceed the recommended daily intake.

We make every effort to ensure that product information on our website is accurate and up to date, but packaging and ingredients may occasionally vary from images shown on site. Please refer to the product label and contact Healf before use if you have any questions regarding your specific allergies or intolerances.