NOW Foods Nattokinase 100mg Review
NOW Foods · Last updated 1 June 2026
Trust Checklist3/6 passed
3rd Party Batch Tested
Passed ConsumerLab 2025/2026 testing
Met or Exceeded Label Potency
Verified by ConsumerLab (exact % not published)
Public Certificates of Analysis
No public per-batch COAs
GMP Certified
GMP, NPA A-rated facility
Made in the UK
US brand, imported
Vitamin K2-Free (warfarin safe)
Not independently verified K2-free
Rating Breakdown
Pros & Cons
Pros
- Passed ConsumerLab's 2025/2026 independent testing (one of 5 passing brands)
- Significantly cheaper than the top four
- Widely stocked on Amazon UK
- NOW Foods is well-established with decades of history
Cons
- No SORA Labs specific potency data (only ConsumerLab pass/fail)
- May require multiple capsules daily for a higher dose
- Does not 3rd party test every batch
Product Details
- Form
- Capsule (Nattokinase enzyme)
- Dosage per Serving
- 100mg (≈2,000 FU)
- Potency
- 100mg (≈2,000 FU)
- Serving Size
- 1 capsule
- Servings per Container
- 60
- Price
- £18.53
- Price per Serving
- £0.31
- Other Ingredients
- Capsule shell, Rice flour, Magnesium stearate
- Certifications
- ConsumerLab Verified (2025/2026), GMP, NPA A-rated
Full Review
Ingredient Quality
NOW Foods passed ConsumerLab's 2025/2026 independent testing, one of only five of eight brands to do so. Its 100mg nattokinase formulation (roughly 2,000 FU) is a low dose — clinical studies typically use 5,000–10,000 FU daily. NOW is one of the most established names in supplements, with strong baseline quality control.
Value Analysis
This is the budget standout — significantly cheaper than the top four while still independently verified by ConsumerLab. For cost-conscious buyers who still want third-party reassurance, it's hard to beat.
Effectiveness
A verified 100mg (~2,000 FU) dose delivers genuine enzyme activity, but it is a low dose versus the 5,000–10,000 FU used in studies. For a higher therapeutic dose you may take more than one capsule. The main limitation versus the top picks is the absence of specific per-batch potency data.
Who Is This Best For?
Budget buyers who want a trusted, established brand with independent verification and don't need a published potency percentage.
Where to Buy
Prices are approximate and may vary. As an affiliate, we may earn a commission from qualifying purchases at no extra cost to you. This does not influence our reviews or rankings of NOW Foods Nattokinase 100mg.
NOW Foods Nattokinase 100mg FAQ
Is NOW Foods nattokinase good value?
Yes — it's significantly cheaper than the top picks while still passing ConsumerLab's independent testing. It's the best budget option for buyers who want a trusted, verified brand without paying a premium.