Nattokinase 50 mg NSK-SD®, 300 Capsules
300 Capsules
May be a fit for
- Adults seeking nattokinase NSK-SD® to support healthy circulation
- Individuals looking to maintain normal fibrinogen levels with nattokinase
- Practitioner protocols requiring clinically studied NSK-SD® nattokinase enzyme
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Nattokinase 50 mg NSK-SD® from Allergy Research Group delivers a standardized, clinically researched form of nattokinase, a fibrinolytic enzyme derived from fermented soybeans, to support healthy circulation and normal blood viscosity. NSK-SD® is a nattokinase extract specifically processed to remove vitamin K2, making it suitable for a broader range of individuals, including those monitoring vitamin K intake.
Why It's Worth Considering: NSK-SD® is among the most studied nattokinase forms, with standardized fibrinolytic activity; Allergy Research Group's practitioner-grade sourcing and 300-capsule count make this a practical option for consistent, longer-term use.
Allergy Research Group · 300 CapsulesMake it part of your routine.
Take 2 capsules twice daily as an initial dose, or as directed by a healthcare practitioner. May be taken with or without food. Take with 8–10 ounces of water.
Important cautions & interactions
Product details
Supplement facts & complete label
Supplement Facts — Serving size: 2 capsules.
Nattokinase NSK-SD® (soy), 2,000 FU: 100 mg.
Other ingredients: hydroxypropyl methylcellulose, microcrystalline cellulose, L-leucine. Servings per container: 150.
Label directions
Take 2 capsules twice daily as an initial dose, or as directed by a healthcare practitioner. May be taken with or without food. Take with 8–10 ounces of water.
Label cautions
Contains soy. If pregnant or lactating, if you have any health condition, or if taking medication, consult your healthcare practitioner. Use under medical supervision with anticoagulant drugs. Do not use with any condition associated with bleeding. Keep out of reach of children and store in a cool, dry place away from light.
Source: authorized supplier exact-SKU catalog label · September 06, 2026. Formulas and labels can change. Check the packaging you receive.
Who it may suit
May be a fit for
- Adults seeking nattokinase NSK-SD® to support healthy circulation
- Individuals looking to maintain normal fibrinogen levels with nattokinase
- Practitioner protocols requiring clinically studied NSK-SD® nattokinase enzyme
- Those supporting cardiovascular wellness with fermented-soy-derived nattokinase
Considerations
- Known allergy to any ingredient (check label)
- Currently pregnant or breastfeeding (consult healthcare provider)
- Taking prescription medications (check for interactions)
- Under 18 years of age (unless recommended by pediatrician)
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More category questions
How should I store this supplement?
Store in a cool, dry place away from direct sunlight. Most supplements are stable at room temperature (59-77°F). Keep the bottle sealed between uses. Check the label for any specific storage requirements — some probiotics and oils require refrigeration.
Can I take this with other supplements?
Most supplements can be taken together safely. However, some minerals compete for absorption (zinc and iron, calcium and magnesium) and should be taken at different times of day. If you're taking prescription medications, consult your healthcare provider about potential interactions.
How long should I take this supplement?
Most supplements benefit from consistent daily use over 2-3 months to achieve full effect. Some (like vitamins and minerals) can be taken indefinitely as part of a daily routine. Others (like specific herbs) may benefit from cycling. Follow the product's recommended protocol or consult a practitioner.
When is the best time to take this?
Fat-soluble supplements (vitamins A, D, E, K, omega-3, CoQ10) should be taken with a meal containing fat. Water-soluble supplements (B vitamins, vitamin C) can be taken anytime. Minerals are generally best absorbed with food. Probiotics should be taken with or just before a meal. Check the product label for specific timing recommendations.
How do I know if this supplement is working?
Track your specific health goals — energy levels, sleep quality, joint comfort, digestion, mood, etc. Most supplements take 2-8 weeks for noticeable effects. For objective measurement, baseline lab tests before starting (and repeat at 3 months) provide definitive evidence. The Gabriel Score incorporates clinical evidence for expected outcomes.
Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.