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Dietary supplement

Nattovena 200 mg Ingredients & Drug Interactions

by Arthur Andrew Medical

Nattovena 200 mg label
See full label image
Capsule Category: Non-nutrient/non-botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 23, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Nattovena 200 mg against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Nattovena 200 mg is a dietary supplement by Arthur Andrew Medical with 1 active ingredient. Its ingredients are commonly taken for heart and circulatory health, blood clot prevention, high blood pressure.Based on those ingredients, 289 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Nattovena. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Nattovena 200 mg by Arthur Andrew Medical

Ask about any prescription or over-the-counter medication and we check it for interactions with Nattovena 200 mg by Arthur Andrew Medical — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Nattovena 200 mg by Arthur Andrew Medical

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 27, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

Nattovena contains one active ingredient: nattokinase, a fibrin-digesting enzyme derived from natto (fermented soybeans). It's designed to support blood flow.

The capsule also contains cellulose, an inactive ingredient.

Does it work?

Not established
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use — see Nattokinase's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: Circulatory and heart health support.
  • We looked for evidence on: Angina, Atherosclerosis, Cardiovascular disease (CVD), Hyperlipidemia, Hypertension, Peripheral arterial disease (PAD) — and 4 related terms.
  • The closest evidence on file: Nattokinase is rated "Insufficient Reliable Evidence To Rate" for Angina (Natural Medicines).
  • Also on file: Nattokinase is rated "Insufficient Reliable Evidence To Rate" for Atherosclerosis, Cardiovascular disease (CVD), Hyperlipidemia, Hypertension, and more.

The evidence we hold on nattokinase doesn't yet support confident claims about its effectiveness. We have insufficient reliable evidence to rate nattokinase for angina, atherosclerosis, cancer, cardiovascular disease, or chronic fatigue syndrome.

If you're considering it for any of these conditions, talk it over with your doctor about what the research currently shows and whether it makes sense for your situation.

The evidence, ingredient by ingredient Nattokinase

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Nattokinase is generally well tolerated for short-term use, but its blood-thinning properties mean you need to be cautious if you have any bleeding risk or take medications that affect clotting. Rare cases of serious bleeding, including brain hemorrhage, have been reported — particularly when nattokinase was combined with aspirin or similar drugs.

There isn't enough safety data to use nattokinase during pregnancy, so it's best avoided if you're pregnant. Safety while breastfeeding is unknown, so avoid it if you're nursing.

Some people sensitive to natto soybeans or their components may have allergic reactions, ranging from mild throat symptoms to severe reactions like anaphylaxis.

Side effects, ingredient by ingredient Nattokinase

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Nattokinase.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 289 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before you take Nattovena, double-check if you're on any blood thinners or antiplatelet drugs (like aspirin, warfarin, clopidogrel) — nattokinase can increase bleeding risk, and there's a documented case of serious brain bleeding when the two were combined. Also confirm your blood pressure medications with your pharmacist, since nattokinase may lower blood pressure further.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

Nattovena is a single-ingredient nattokinase supplement generally well tolerated short-term, but it carries real interaction risks with blood thinners, antiplatelet drugs, and blood pressure medications. If you take any of those, or have a bleeding disorder, you'll want to check with your doctor or pharmacist before adding this.

Pregnant or breastfeeding? Avoid it — the safety data aren't there.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated May 19, 2022.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Nattovena 200 mg, straight from the product label.

Brand Arthur Andrew Medical
Net contents 30 Capsule(s)
Market status On market
Date entered into DSLD May 19, 2022
DSLD ID 265138
Product type Non-nutrient/non-botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, Adult (18 - 50 Years), Kosher, Gluten Free, Dairy Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Nattovena 200 mg by Arthur Andrew Medical, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
30
IngredientAmount% DV
Nattovena200 mg--

Other ingredients: Cellulose

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formula

Nattovena 4,000 FUs per capsule Pure Nattokinase

Star-K (Kosher)

FDA Statement of Identity

Dietary Supplement

Formulation

Nattovena supports: Circulatory and heart health Superior fibrin degradation Blood cleansing and purification Normal blood viscosity Healthy plasmin production Pharmaceutical grade

Nattovena is free of dairy, gluten, and soy allergens. Contains no artificial colors or preservatives.

Non GMO

Vegan

Precautions

Keep out of reach of children.

Storage

Store in a cool dry place with lid tightly closed.

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Seals/Symbols

Vegan Star-K (Kosher) GRAS Generally Recognized as Safe

General Statements

For more information about the benefits of Nattovena, please call 800-448-5015, visit www.arthurandrew.com or write to: Arthur Andrew Medical, 8350 E Raintree Dr #101 Scottsdale, AZ 85260.

Brand IP Statement(s)

Copyright 2014 Arthur Andrew Medical Inc.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Nattovena 200 mg by Arthur Andrew Medical label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Nattovena 200 mg label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Nattovena 200 mg by Arthur Andrew Medical

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.

Nattovena

Interacts with
289 drugs
200 mg per serving Form: Nattokinase

Nattokinase is an enzyme from the fermented soybean food natto that may have mild blood-thinning and blood-flow effects. Some small studies hint at be...

Nattovena monograph & interactions

Other (inactive) ingredients: Cellulose. These complete the product’s ingredient list but are not active constituents.

Interaction report

Nattovena 200 mg by Arthur Andrew Medical Drug Interactions

Want to check YOUR meds against Nattovena 200 mg?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
289Drugs
289 Moderate

Ingredients driving the most interactions

Nattovena 289

Individual Drug Interactions

The ingredients in Nattovena 200 mg interact with 289 drugs. Click any drug to see the details.

1 of the 1 ingredient in Nattovena 200 mg interact with drugs. Each result below shows which ingredient is responsible. Nattovena

Each ingredient & the kinds of drugs it affects

For each ingredient in Nattovena 200 mg with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Nattovena2 drug types · 289 drugs

Anticoagulant/Antiplatelet Drugs

Nattokinase might increase the risk of bleeding when used with anticoagulant/antiplatelet drugs.
Nattokinase has thrombolytic and anticoagulant effects. There is a case report of intracranial hemorrhage in a patient who added nattokinase to aspirin therapy.

Likelihood Possible Evidence D
Antihypertensive Drugs

Theoretically, nattokinase might increase the risk of hypotension when used with antihypertensive drugs.
Some clinical research suggests that nattokinase may reduce systolic and diastolic blood pressure.

Likelihood Possible Evidence D
Nattovena full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Nattovena 200 mg, from the product label.

Arthur Andrew Medical

See all Arthur Andrew Medical products
Name
Arthur Andrew Medical
Street Address
8350 E Raintree Dr #101
City
Scottsdale
State
AZ
ZipCode
85260
Phone Number
800-448-5015
Web Address
www.arthurandrew.com
Pharmacist Counseling Corner

Nattovena 200 mg by Arthur Andrew Medical: Common Questions

Does Nattovena 200 mg by Arthur Andrew Medical interact with any medications?
Yes. Based on its ingredients, Nattovena 200 mg has a known interaction with 289 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Nattovena 200 mg contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I take Nattovena if I'm on aspirin?
Not without checking first. Nattokinase and aspirin together raise your bleeding risk — there's a documented case of brain bleeding in someone on both. Talk to your doctor or pharmacist before combining them.
What exactly is nattokinase?
It's an enzyme from natto, which is fermented soybeans. It's designed to help break down fibrin (a clotting protein) and support blood flow.
Is Nattovena safe during pregnancy?
No, there isn't enough safety data. The facts advise against it during pregnancy, so skip it if you're pregnant or planning to be.
Can I take Nattovena while breastfeeding?
Safety while breastfeeding is unknown, so it's best to avoid it if you're nursing. Talk to your doctor or pharmacist about whether it's right for you.
Does Nattovena actually work for heart health or blood clots?
We don't have strong evidence yet. The data shows insufficient reliable evidence for angina, atherosclerosis, cardiovascular disease, or other conditions. If you're using it for heart health, ask your doctor what the current research supports.
Can I have an allergic reaction to Nattovena?
Yes, if you're sensitive to natto soybeans. Allergic reactions can range from mild throat symptoms within 2 hours of taking it to severe reactions like anaphylaxis, though those are uncommon.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Nattovena 200 mg label
Go deeper

The Full Monographs Behind Nattovena 200 mg’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Nattokinase

Interacts with 289 drugs

Nattokinase is an enzyme from the fermented soybean food natto that may have mild blood-thinning and blood-flow effects. Some small studies hint at benefits for blood pressure and circulatio...

Read the full Nattokinase monograph →
Sources

Sources & How We Checked

Nattovena 200 mg's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 9 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Nattokinase 9 references
  1. Suzuki Y, Kondo K, Matsumoto Y, et al. Dietary supplementation of fermented soybean, natto, suppresses intimal thickening and modulates the lysis of mural thrombi after endothelial injury in rat femoral artery. Life Sci 2003;73:1289-98.. PubMed
  2. Sumi H, Hamada H, Nakanishi K, Hiratani H. Enchancement of fibrinolytic activity in plasma by oral administration of nattokinase. Acta Haematol 1990;84:139-43.
  3. Chang, Y. Y., Liu, J. S., Lai, S. L., Wu, H. S., and Lan, M. Y. Cerebellar hemorrhage provoked by combined use of nattokinase and aspirin in a patient with cerebral microbleeds. Intern Med 2008;47(5):467-469. PubMed
  4. Kim, J. Y., Gum, S. N., Paik, J. K., Lim, H. H., Kim, K. C., Ogasawara, K., Inoue, K., Park, S., Jang, Y., and Lee, J. H. Effects of nattokinase on blood pressure: a randomized, controlled trial. Hypertens.Res 2008;31(8):1583-1588. PubMed
  5. <p>Maruyama M, Sumi H (eds): Effect of natto diet on blood pressure, in Basic and Clinical Aspects of Japanese Traditional Food Natto II. Japan Technology Transfer Association (JTTAS), 1998, pp 1–3.</p>
  6. Kurosawa Y, Nirengi S, Homma T, et al. A single-dose of oral nattokinase potentiates thrombolysis and anti-coagulation profiles. Sci Rep 2015;5:11601. PubMed
  7. Ramachandran L, Aqeel A, Jafri A, Sidhu Y, Mohamed Djirdeh T. Nattokinase-associated hemoperitoneum in an elderly woman. Cureus 2021;13(12):e20074. PubMed
  8. Awatani-Yoshidome K, Hashimoto T, Satoh T. Anaphylaxis from nattokinase in a patient with fermented soybean (natto) allergy. Allergol Int 2022;71(1):153-4. PubMed
  9. Suzuki K, Nakamura M, Sato N, Futamura K, Matsunaga K, Yagami A. Nattokinase, a subtilisin family serine protease, is a novel allergen contained in the traditional Japanese fermented food natto. Allergol Int 2022.

See these in context on the Nattokinase monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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