Supplements
bromelain decreases osteoarthritis pain
In plain terms: Does bromelain help arthritis and joint pain?
Part of: 🧪 bromelain
Unproven on its own. The main positive knee-osteoarthritis trial used a bromelain-plus-other-enzymes blend, so you can't credit bromelain alone. Promising but not established.
📅 Last reviewed: 2026-07-15 ⓘ
Evidence ladder
How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."
Top evidence so far: Human trials (RCT / n-of-1)
How the studies fall
What the evidence shows
Plausible but not established. A systematic review called the evidence promising-but-limited, and the main positive knee-OA trial used a bromelain-containing enzyme blend (with trypsin/rutin), so the benefit can't be pinned on bromelain alone. Not enough to recommend it on its own.
The evidence (6)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Brien 2004 · Evid Based Complement Alternat Med | observational | mixed | low | Systematic review: bromelain shows analgesic/anti-inflammatory promise for OA, but controlled evidence is limited. |
| Shekhar A et al 2024 · study_type: meta-analysis | observational | mixed | low | Systematic review (PRISMA) of only 2 studies on trypsin+bromelain+rutoside for TMJ osteoarthritis; found significant pain/function improvement combined with diclofenac vs NSAID alone. |
| Henrotin YE et al 2022 · study_type: observational | observational | mixed | moderate | Narrative review of 9 RCTs of oral enzyme combination (bromelain+trypsin+rutin) vs NSAIDs in OA; concludes the blend is roughly as effective as NSAIDs for pain with fewer GI side effects, but is not a systematic review/meta-analysis. |
| Pavan 2012 · Biotechnol Res Int | observational | supports | low | Review: bromelain's OA benefit is largely from enzyme-combination products; standalone evidence is thin. |
| Kasemsuk 2016 · Clin Rheumatol | RCT | supports | moderate | RCT: a 16-week bromelain-containing enzyme preparation improved WOMAC scores in knee osteoarthritis (combination product). |
| Henrotin Y et al 2025 · study_type: RCT | RCT | mixed | low | Crossover RCT, n=45 (43 completed), knee OA; oral enzyme combo (bromelain+trypsin+rutoside) vs placebo, 8 weeks each arm. KOOS Pain subdomain improved significantly (p=0.046) but global KOOS did not; this is a blend, not isolated bromelain. |
Disagree, or know a study we missed?
We grade by evidence, not opinions. The way to weigh in is to point us to a study we haven't cited (check the evidence table above first), or to flag a problem with one we have. Every submission is reviewed; if it holds up, the grade updates and shows in Science Changes Its Mind.
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Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.