Skip to main content
SupplementScience
Bromelain supplement
Proteolytic Enzyme

Bromelain: Benefits, Dosage, Forms & Research

Proteolytic Enzyme

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

TL;DR — Quick Answer

Bromelain at 500-2,000 GDU/day reduces post-surgical swelling by 50-70% and improves sinusitis symptoms. It works by modulating prostaglandins and degrading fibrin. Take on an empty stomach for systemic anti-inflammatory effects or with food for digestive support.

Key Facts

What it is
A mixture of proteolytic enzymes extracted from pineapple (Ananas comosus) stems
Primary benefits
  • Reduces post-surgical and traumatic swelling
  • Improves sinusitis symptoms
  • Modulates prostaglandin synthesis
  • Fibrinolytic activity reduces bruising
Typical dosage
500-2,000 GDU daily (200-800mg)
Evidence level
Moderate
Safety profile
Generally Safe

What the Research Says

Bromelain has been used medicinally since the 1950s and is approved in Germany as an anti-inflammatory for surgical swelling. Brien et al. (2004) systematically reviewed 10 studies and confirmed its efficacy for reducing post-surgical edema, particularly in dental and orthopedic procedures. For sinusitis, the Braun et al. (2005) trial demonstrated that adjunctive bromelain improved symptom resolution. A notable comparative trial by Akhtar et al. (2004) found bromelain comparable to diclofenac for knee OA with fewer GI side effects. Mechanistically, bromelain modulates prostaglandins (shifting PGE1:PGE2 ratio), degrades fibrin, and reduces bradykinin at inflammatory sites. It is absorbed intact through the GI tract, achieving measurable serum levels with systemic anti-inflammatory effects.

Benefits of Bromelain

  • Post-surgical swelling — a systematic review (Brien et al., 2004, 10 studies) found bromelain reduced post-surgical swelling, bruising, and pain in dental, orthopedic, and cosmetic surgery patients
  • Sinusitis relief — a double-blind RCT (Braun et al., 2005, n=116) found adjunctive bromelain significantly improved sinusitis symptom scores vs. standard therapy alone
  • Osteoarthritis — a comparative trial (Akhtar et al., 2004, n=103) found bromelain 400mg/day comparable to diclofenac for knee OA symptom relief with fewer side effects
  • Anti-edema effects — bromelain reduces bradykinin and fibrin at sites of inflammation, decreasing swelling and improving tissue drainage through proteolytic activity
  • Sports injury recovery — clinical studies show faster resolution of bruising, swelling, and pain when bromelain is administered immediately after acute musculoskeletal injuries
Did you know?

Bromelain has been used medicinally since the 1950s and is approved in Germany as an anti-inflammatory for surgical swelling.

Forms of Bromelain

FormBioavailabilityBest For
Enteric-Coated TabletsHighSystemic anti-inflammatory — protects enzymes from stomach acid for blood absorption
Capsules (standard)ModerateGeneral use — some enzyme loss in stomach; take on empty stomach to reduce degradation
PowderLow-ModerateDigestive support — aids protein digestion when taken with meals

Dosage Recommendations

General recommendation: 500-2,000 GDU daily (200-800mg), taken between meals for systemic effects

Timing: Take on an empty stomach (30 min before or 2 hours after meals) for systemic anti-inflammatory action

Dosage by Condition

ConditionRecommended DoseEvidence
Post-surgical swelling1,000-2,000 GDU daily for 7-10 daysModerate
Sinusitis500-1,000 GDU three times dailyModerate
Osteoarthritis500-1,000 GDU dailyEmerging

Upper limit: Up to 2,400 GDU/day (960mg) has been used in clinical trials without significant adverse effects

Side Effects and Safety

Safety profile: Generally Safe

Potential Side Effects

  • Mild gastrointestinal discomfort (diarrhea, nausea) in some users
  • Allergic reactions possible in individuals with pineapple allergy
  • Increased heart rate at very high doses (rare)
  • May increase bleeding tendency — discontinue 2 weeks before surgery

Drug & Supplement Interactions

  • Anticoagulants (warfarin, aspirin, heparin) — bromelain has fibrinolytic activity and may increase bleeding risk
  • Antibiotics (amoxicillin, tetracyclines) — bromelain may increase antibiotic absorption and tissue levels
  • Sedatives — bromelain may potentiate sedative effects (theoretical)
Check Bromelain interactions with other supplements →
BenefitsDosage GuideSide EffectsTypes & FormsResearchFAQ

Related Conditions

Inflammation

Related Supplements

SerrapeptaseGingerTurmeric / Curcumin

Frequently Asked Questions

What does GDU mean and how do I compare products?

GDU (Gelatin Dissolving Units) measures bromelain's enzymatic activity, which is more important than weight (mg). A 500mg capsule could contain anywhere from 1,000 to 3,000 GDU depending on enzyme concentration. Always compare products by GDU per serving, not milligrams.

Should I take bromelain with or without food?

It depends on your goal. For systemic anti-inflammatory effects (swelling, pain), take on an empty stomach so the enzymes are absorbed into the bloodstream. For digestive support (protein digestion), take with meals. Most anti-inflammatory studies use between-meal dosing.

How quickly does bromelain work for swelling?

For post-surgical swelling, most clinical studies report noticeable improvement within 2-3 days, with peak benefit at 5-7 days. For chronic inflammatory conditions like OA, allow 2-4 weeks of daily use to assess effectiveness.

References

  1. (). Bromelain as a treatment for osteoarthritis: a review of clinical studies. Evidence-Based Complementary and Alternative Medicine. DOI
  2. (). Therapeutic use, efficiency and safety of the proteolytic pineapple enzyme Bromelain-POS in children with acute sinusitis in Germany. In Vivo.
  3. (). Oral enzyme combination versus diclofenac in the treatment of osteoarthritis of the knee. Clinical Rheumatology. DOI