Doctor's Best Nattokinase 2,000 FUs gives 2,000 fibrinolytic units (FUs) of nattokinase in each vegan capsule. A bottle has 90 capsules, which is 90 days at one a day. Nattokinase is an enzyme from natto, a traditional Japanese food made by fermenting soybeans with the bacteria Bacillus subtilis. It contains soy, and it is not suitable for anyone taking blood thinners.
At a glance
| Detail | Doctor's Best Nattokinase 2,000 FUs |
|---|---|
| Brand | Doctor's Best |
| Type | Enzyme capsule (nattokinase) |
| Per capsule | 2,000 FUs nattokinase |
| Serve size | 1 veggie capsule |
| Size | 90 veggie capsules, 90 serves |
| Label directions | 1 capsule daily between meals |
| Diet notes | Vegan and non-GMO. Contains soy. Vitamin K2 removed during processing |
What is in it
Nattokinase is measured in FUs, or fibrinolytic units, which describe the enzyme's activity instead of its weight. 2,000 FUs is the strength most brands use.
Natto is naturally high in vitamin K2. Doctor's Best says the vitamin K2 is removed during processing, so this product is not a source of K2.
The other ingredients are maltodextrin, hypromellose (the vegetarian capsule) and magnesium stearate from a vegetable source.
What the research says. Nattokinase has been studied for circulation and blood pressure in small trials. The results are early, and it is not a replacement for any medicine your doctor has prescribed.
Who it suits
- Healthy adults who are not on blood thinning medicine and who have checked with a health professional, as the label advises.
- Vegans, since the capsule is plant based.
Who should check first
- Taking blood thinners: do not use it. This includes warfarin, other anticoagulants and daily aspirin or clopidogrel, unless your doctor says it is fine.
- Bleeding disorders or a history of bleeding: do not use it without your doctor's advice.
- Before surgery or dental work: tell your doctor or dentist, and ask when to stop taking it.
- Soy allergy: do not use it. It contains soy.
- Pregnant or breastfeeding: do not use it.
- Everyone else: the label says to consult your healthcare professional before using this product.
How to use it
Take 1 capsule daily between meals, or as recommended by your healthcare professional. Do not take more than the label says. Stop taking it and see your doctor if you notice unusual bruising or bleeding.
Where to buy Doctor's Best Nattokinase in Melbourne and Australia
Shop Doctor's Best Nattokinase 2,000 FUs online at Supps247 with Australia-wide delivery, or order online and use click and collect at Supps247 stores that offer online pickup. Stock varies by store, so check online or use the store locator before you travel. You can also browse more from Doctor's Best.
FAQs
What does FU mean?
Fibrinolytic units. It is a measure of the enzyme's activity.
Does it contain vitamin K2?
No. Doctor's Best says the vitamin K2 is removed during processing.
Does it contain soy?
Yes. Nattokinase comes from fermented soybeans.
Details checked against the product listing on 12 November 2026. Formulas can change, so always read the label on the product you buy and follow the directions.
This article is general information, not medical advice.
