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Limited evidenceGut health

Protease

A protein-digesting enzyme sold on its own or inside digestive-enzyme blends. Trials exist for multi-enzyme complexes in indigestion, but almost none isolate protease itself.

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What the science says

  • Bloating and fullness after meals Limited evidence

    Two small randomised, placebo-controlled trials in functional dyspepsia (roughly 40-80 participants each) found that multi-enzyme complexes containing protease alongside amylase, lipase and lactase reduced bloating and postprandial fullness. Because the products were blends, the share attributable to protease is unknown.

  • Exercise recovery Limited evidence

    A randomised trial in cyclists across consecutive days of racing found little meaningful benefit of acute protease supplementation on muscle damage markers or recovery. Evidence here is a handful of small sports-science studies with inconsistent results.

  • Protein absorption in healthy people Limited evidence

    There is no controlled human evidence that supplemental protease increases protein digestion or absorption in people with normal pancreatic function. The pancreas already secretes far more protease than a capsule provides.

Dosage & safety

Studied doseNo established dose. Labels typically give activity units (e.g. 20,000-100,000 HUT) rather than milligrams, taken with meals. Studied products were blends, so no isolated protease dose is validated.
SafetyGenerally well tolerated. May cause nausea or loose stools at high activity levels. People with peptic ulcers or gastritis should be cautious, and those on anticoagulants should note that proteolytic enzymes such as bromelain and serrapeptase can affect clotting. It does not replace prescription pancreatic enzyme therapy for pancreatic insufficiency.

How to take it

TimingWith meals for digestive use; systemic-enzyme claims involve empty-stomach dosing that has far weaker support.
With food?With food when the goal is digestion.
Worth knowingCompare activity units (HUT), not milligrams — two products with the same weight can differ many-fold in actual enzyme activity.

Interactions

With medications

  • warfarin and other anticoagulants or antiplatelets

    Proteolytic enzymes such as bromelain and serrapeptase can affect clotting and add to bleeding risk. avoid combining, and stop before surgery

With other supplements

  • fish oil, garlic, ginkgo and other blood-thinning supplements

    Compounded effect on clotting. do not stack them

Well-established interactions only — this is not a complete list. Always tell your doctor and pharmacist what you take.

Frequently asked questions

Do protease enzymes help bloating?

Protease has limited evidence for bloating: two small trials in functional dyspepsia found multi-enzyme complexes containing protease reduced bloating and postprandial fullness, but the share due to protease is unknown. Almost no trial isolates protease itself.

Does protease help protein absorption?

There is no controlled human evidence that supplemental protease increases protein digestion or absorption in people with normal pancreatic function, which already secretes far more protease than a capsule provides. The evidence is limited.

Does protease help muscle recovery after exercise?

A randomized trial in cyclists found little meaningful benefit of protease on muscle damage markers or recovery, and the few sports studies are small and inconsistent. The evidence for protease in exercise recovery is limited.

Is protease safe with blood thinners?

Proteolytic enzymes such as bromelain and serrapeptase can affect clotting, so avoid combining protease products with anticoagulants, antiplatelets or blood-thinning supplements, and stop before surgery. Compare protease products by activity units (HUT), not milligrams.

Scientific references

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