Serrapeptase

Other ·Emerging evidence ·Reviewed May 2026

Silkworm-derived enzyme with fibrinolytic and anti-inflammatory properties.

What it's good for
  • Inflammation reduction6,13
  • Sinus relief7
  • Pain relief1,2
  • Scar tissue
What to watch for
  • GI upset
  • Nausea
  • Skin reactions (rare)
  • Blood thinners
  • Bleeding disorders

The bottom line

Evidence rating emerging. Most-documented uses: inflammation reduction, sinus relief, pain relief. 16 sources indexed (1988–2025), with 5 interaction records on file.

The science

How it works, mechanistically.

Core mechanism

Serine protease that breaks down fibrin, mucus, and inflammatory proteins. Reduces bradykinin and other inflammatory mediators. May thin mucus in respiratory conditions.13,7

Class
Proteolytic Enzyme
Absorption
Best on an empty stomach
Dosing

Dosing & protocol.

Common range
60,000-120,000 SPU daily
Recommended form
Enteric-coated (destroyed by stomach acid)

Take on empty stomach; enteric coating essential

Dosing protocol

Maintain · 10-60 mg/day enteric coated, between meals

Must be enteric-coated to survive gastric acid. Evidence base is small.

No cycling requiredNo tolerance buildup
Forms

Forms & what to buy.

Ranked by evidence and value.

Enteric-Coated Serrapeptase Recommended
Rank 1: protected enzyme form. Limited direct form-comparison evidence; ranking is based on review or mechanistic data (PMID: 7917060). Take away from meals.
Premium40,000-120,000 SPU/day
Delayed-Release Serrapeptase
Rank 2: similar protection with capsule technology. Activity units matter more than milligrams.
Premium40,000-120,000 SPU/day
Non-Enteric Serrapeptase
Rank 3: least protected form. Likely lower enzyme survival through stomach acid.
BudgetUse label dose
Cost

What it actually costs.

Real-world pricing across three quality tiers. Assumes Enteric-Coated Serrapeptase.

BudgetBest value
$6.00 /mo
$0.20 per dose
Mid
$13.50 /mo
$0.45 per dose
Premium
$27.00 /mo
$0.90 per dose

Assumes 60,000-120,000 SPU/day. Vendor basis: NOW/iHerb, Vitacost, Amazon marketplace, and systemic enzyme brands; high-SPU enteric tablets price premium. Updated 2026-05-28.

From food

The same dose, as food.

How much you'd eat to match a supplemental dose.

60,000-120,000 SPU serrapeptase
Not applicable as a whole-food equivalent.

Serrapeptase is a proteolytic enzyme preparation and is not found in ordinary foods at supplement activity levels.

Lab work

Markers to track.

What to test, the optimal window inside the conventional range, and how long a response takes.

hsCRP

Serrapeptase (10 to 60 mg per day, enteric-coated, between meals) shows small RCT evidence for post-surgical inflammation and chronic sinusitis; systemic absorption of enzyme remains contested.3,4

Optimal
0–1 mg/L
Conventional
0–3 mg/L
Responds in
Post-surgical endpoints within days; chronic markers over 4 to 8 weeks.

Must be enteric-coated to survive gastric acid. Evidence base is smaller and lower-quality than for bromelain or nattokinase.

Safety

Full safety detail.

Side effects

  • GI upset
  • Nausea
  • Skin reactions (rare)

Contraindications

  • Blood thinners
  • Bleeding disorders
  • Surgery1,2
Interactions

Interaction records.

ModerateCaution

Nattokinase

Combining these two fibrinolytic enzymes produces additive breakdown of fibrin and a higher risk of bruising, prolonged bleeding, and (rarely) serious hemorrhage, particularly in people also on antiplatelet or anticoagulant drugs.

Recommendation: Avoid stacking both fibrinolytic enzymes unless supervised by a clinician. Stop both at least 1 to 2 weeks before any surgery or dental procedure, and do not combine with aspirin, warfarin, or DOACs without medical oversight.

InfoSynergy

Bromelain

Serrapeptase and bromelain are commonly combined as systemic proteolytic enzymes and appear to act in a complementary way to reduce post-surgical edema, pain, and inflammation.

Recommendation: Reasonable to combine for short-term anti-inflammatory support. Take on an empty stomach (away from food) for systemic enzyme effect, and monitor for additive bleeding tendency if also on blood thinners.

ModerateCaution

Fish Oil

Fish oil has mild antiplatelet activity that can add to serrapeptase's fibrinolytic effect, modestly increasing the chance of bruising or prolonged bleeding, mainly at high omega-3 doses or around surgery.

Recommendation: The combination is generally tolerated, but use caution with high-dose fish oil. Discontinue both before surgery and consult a clinician if also taking antiplatelet or anticoagulant medication.

ModerateCaution

Turmeric/Curcumin

Serrapeptase has fibrinolytic activity and curcumin has antiplatelet activity, so the combination can additively reduce clotting and increase bleeding risk while also providing additive anti-inflammatory effects.

Recommendation: Use together cautiously, especially if on anticoagulant or antiplatelet drugs, and discontinue both 7 to 10 days before surgery or dental procedures. Watch for bruising or prolonged bleeding.

ModerateCaution

Ginkgo Biloba

Ginkgo inhibits platelet-activating factor and serrapeptase is fibrinolytic, so combining them can additively impair hemostasis and increase the risk of bruising and bleeding.

Recommendation: Combine cautiously and monitor for bleeding signs. Avoid the combination with anticoagulants or antiplatelet drugs unless supervised, and stop both at least 7 to 10 days before surgery.

Sources

Sources, by evidence tier.

Numbered references. Citations throughout the page link here.

Randomized controlled trials

7

Reviews & position papers

7
Keep exploring

Deep dives & adjacent profiles.

This page is educational. Do not start, stop, or change a supplement or medication based on it without checking with a qualified healthcare professional.

Use this with your stack

Serrapeptase in NutriStack.

Add it to your stack, see how it interacts with everything else you take, and get a Stack Score that updates the moment it does.

NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.