Description
Source Naturals NSK-SD Nattokinase 100 mg is described by the brand as a whole-body systemic enzyme, isolated from natto, the traditional Japanese soy food, and researched for its role in supporting healthy blood flow by assisting the body's circulatory clearing system. NSK-SD is a specific, clinically studied nattokinase ingredient used across a number of brands, so it is worth checking for this exact designation if ingredient quality matters to you when comparing nattokinase products.
What's in each capsule
Each vegan capsule provides 100 mg of clinically studied NSK-SD nattokinase, standardised to 2,000 FU. The formula is vegan, gluten-free, dairy-free, wheat-free and preservative-free, with no added yeast, egg, sugar, or artificial colours, flavours or fragrance. Other ingredients are microcrystalline cellulose, hydroxypropyl cellulose (capsule), silica and magnesium stearate, and the product contains soya.
A three-times-daily dose
Unlike many nattokinase products that use a once or twice-daily dose, the label for this product directs adults to take one capsule three times daily on an empty stomach with 8 ounces of water. Across a full day, that adds up to a higher total FU intake than a single 2,000 or 4,000 FU serving elsewhere in our range, so it is worth checking this dosing schedule fits your routine before choosing this product over a once-daily alternative.
Choose your pack size
This product is available in 30 or 60 vegan capsule counts. At three capsules a day, a 30-count bottle provides a 10-day supply, while the 60-count bottle stretches to around 20 days, so it is worth choosing the size that matches how long you plan to use it before reordering. If a shorter reorder cycle does not suit you, our Source Naturals NSK-SD Nattokinase 200 mg uses a more flexible once or twice-daily dose in a larger 60-capsule bottle.
Who should be cautious
Do not use this product if you have a blood coagulation or blood pressure disorder. Consult your healthcare professional before taking it if you are using any drug that affects blood coagulation or blood pressure, such as prescription vitamin K, heparin, warfarin, diuretics, ACE inhibitors or beta blockers, or if you are pregnant, may become pregnant, or breastfeeding. For more on nattokinase dosing and FU strength, our Nattokinase Benefits, Dosage & Side Effects Guide covers the research in more detail.
Storage
Store in a cool, dry place, and do not use if either tamper-evident seal is broken or missing.
