Nattokinase Buyer's Guide: FU per Day, Powder vs Capsules & How to Choose
Short answer: Most nattokinase supplements provide 2,000 FU a day, and some people use 4,000 to 10,000 FU. Choose a product that states FU per serving, publishes lot lab results, and gives you a dose you can measure without a milligram scale. Compare price per 2,000 FU, not per bottle.
How many FU of nattokinase per day?
FU (fibrinolytic units) measure nattokinase enzyme activity, which matters more than milligrams. What does FU mean?
| Daily amount | Where you see it |
|---|---|
| 2,000 FU | The most common amount on supplement labels |
| 4,000 FU | Often split as 2,000 FU twice a day |
| 10,000+ FU | Higher amounts used in some research, such as a 2022 study of 1,062 adults that used 10,800 FU a day |
The right amount for you is a conversation with your healthcare provider, especially if you take any medication.
How do I measure nattokinase powder?
Bulk nattokinase is usually sold at 20,000 FU per gram. That makes 2,000 FU just 100 mg, about 1/32 of a teaspoon, which needs a milligram scale to measure. Eyeball it and you can easily take half or double what you meant to.
AMLApure powders are blended so one full scoop is a set FU amount: 2,000 FU or 10,000 FU depending on the product, with the scoop included. See the scoop comparison
Powder or capsules?
Powder
- Flexible dose: half or full scoop
- No capsule shell or flow agents
- Mixes into water, smoothies or tea
- Usually lower cost per FU
Capsules
- Fixed dose, nothing to measure
- Easy for travel
- Often 100 mg at 2,000 FU each
- Usually higher cost per FU
Is paying more for higher FU worth it? Only if you will actually take that amount. Divide the price by the total FU in the container and compare the cost per 2,000 FU. A higher-FU product can work out cheaper per FU even when the price is higher.
How to pick a safe, properly tested nattokinase
- FU stated per serving, not just milligrams or "nattokinase blend".
- Lot-specific lab results you can actually see: identity, enzyme activity, heavy metals and microbes. See ours
- Vitamin K2-free nattokinase, if your provider has asked you to watch vitamin K.
- Soy-free and vegan if you avoid soy.
- A dose you can measure with the included scoop or capsule, not by guesswork.
- Short ingredient list, with no artificial fillers or flavors.
AMLApure nattokinase powders
| Product | FU per scoop | Size and price | Cost per 2,000 FU |
|---|---|---|---|
| Blue Label Nattokinase | 2,000 FU | 1 month $29.99 · 3 months $49.99 · 12 months $149.99 | $0.42 to $1.00 |
| Nattokinase 4,000 FU + AMLA | 2,000 FU (4,000 in two scoops) | 90 scoops $79.99 | $0.89, amla included |
| Nattokinase 4,000 FU + AMLA + Bergamot | 2,000 FU (4,000 in two scoops), plus 900 mg amla and 192.5 mg bergamot per scoop | 90 scoops $99.99 | $1.11, amla and bergamot included |
| 10,000 FU Nattokinase, 90 servings | 10,000 FU | $99.99 | $0.22 |
| 10,000 FU Nattokinase, 30 servings | 10,000 FU | $49.99 | $0.33 |
Want nattokinase with bromelain and quercetin in one powder? See Enterinex™ Yellow.
Start with 2,000 FU · from $29.9910,000 FU · 90 servings
Questions people ask
How many FU of nattokinase per day is typical?
2,000 FU a day is the most common amount on supplement labels. Some people use 4,000 FU, and some research has used higher amounts, such as 10,800 FU a day. Ask your healthcare provider what is right for you.
How do I measure 2,000 FU with powder?
Multiply the FU per gram by the grams you take. Bulk powder at 20,000 FU per gram needs only 100 mg for 2,000 FU, which takes a milligram scale. AMLApure powders are blended so one full scoop is a set amount, such as 2,000 FU.
Is nattokinase powder better than capsules?
Powder gives you a flexible dose with no capsule shell and usually costs less per FU. Capsules are a fixed dose and handy for travel. Both work if the FU per serving is clearly stated and tested.
Is paying more for higher FU worth it?
Only if you will take that amount. Compare cost per 2,000 FU rather than price per container; higher-FU products are often cheaper per FU.
What should I avoid when buying nattokinase?
Avoid products that list only milligrams with no FU, hide the amount in a proprietary blend, or cannot show lot lab results for identity, enzyme activity, heavy metals and microbes.
Who should talk to a doctor before taking nattokinase?
Anyone taking blood thinners or antiplatelet medication, people with a bleeding disorder, anyone with surgery or dental work scheduled, and people who are pregnant or nursing.
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. Research references describe the amounts studied, not results for AMLApure products.