Is Serrapeptase Safe with Heparin?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Do not use serrapeptase if you are receiving heparin therapy. This combination is contraindicated in clinical settings. Report any signs of bleeding immediately including black tarry stools, coughing or vomiting blood, or unexpected bruising.
Why this interaction occurs
Serrapeptase exerts potent fibrinolytic activity by directly degrading fibrin and other structural proteins involved in clot formation. When combined with heparin, which inhibits thrombin and factor Xa, the dual mechanism creates a critically elevated risk of systemic hemorrhage that may be life-threatening.
Evidence
Evidence level: moderate.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 74,623 reports mentioning Heparin. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Heparin + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
All Serrapeptase interactions → · All Heparin interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.