Supplement Scholar
Compound

Papain

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Papain. Papaya proteolytic enzyme.

How it works. Cleaves proteins; anti-inflammatory.

What the research supports. 1 graded claims. Strongest: Digestion support (moderate).

How much to take. Typical dose: 100–200 mg.

Side effects and interactions. 1 medication interaction listed. No serious side effects listed at normal doses.

Stacking. Pairs well with Multi-strain probiotic, L-glutamine.

Common forms. Available as Capsule or softgel, Powder, Sublingual or buccal, Liposomal liquid.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Papain. Anecdotes are not medical advice.

Papain. Papaya proteolytic enzyme.

No single structure

What it is

Papaya proteolytic enzyme.

Food sources

Endogenously produced or biosynthesized moleculeStandardized pharmaceutical- or food-grade supplementCombined with cofactors that improve absorption or activity

How it works

Cleaves proteins; anti-inflammatory.

Pathways

  • Cleaves proteins
  • anti-inflammatory

Effects

  • +Digestion support supports

What the research supports

Digestion supportmoderate

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
100–200 mg
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodWith a meal containing fat for fat-soluble compounds; otherwise either.
Best formMost evidence is based on the capsule or softgel form.
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Side effects & interactions

Common side effects

  • GI upset

Medication interactions

Prescription medications (general)minor

Always disclose Papain use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

Common forms

  • Capsule or softgel
  • Powder
  • Sublingual or buccal
  • Liposomal liquid

Key studies

8 studies cited in total.

PubMed: Papain — Digestion support ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Papain and "Digestion support". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Papain — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Papain and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Papain — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Papain and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

Discussion

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