Bromelain for Chronic Sinusitis

Bromelain — the pineapple-stem enzyme mixture — has a small, genuinely interesting evidence base in sinusitis: several trials (mostly older, some German) found faster symptom resolution and less nasal swelling when bromelain was added to standard treatment, and it holds approval in Germany as an adjunct for acute sinusitis. For chronic sinusitis specifically, data are thin, and the evidence-based core remains intranasal steroids and saline irrigation. Bromelain is a reasonable, low-risk adjunct — positioned behind the proven daily regimen, not in place of it.

Bromelain is a mixture of protein-digesting (proteolytic) enzymes with documented anti-inflammatory effects: it reduces pro-inflammatory prostaglandins and cytokines, degrades fibrin, and thins mucus-protein complexes. In inflamed sinuses the proposed benefit is reduced mucosal swelling and thinner, drainable secretions. It is absorbed intact to a measurable degree when taken between meals (with food it is largely spent digesting the meal instead).

Several randomized trials from the 1960s–2000s found bromelain as an adjunct improved sinusitis symptom scores and nasal airflow versus standard care alone; German health authorities (Commission E) approved it for acute sinus and nasal inflammation post-surgery. A 2006 pediatric trial showed faster recovery with bromelain monotherapy in acute sinusitis. Systematic reviews rate the evidence suggestive but limited: small trials, older methodology, and almost no data in chronic (12+ week) rhinosinusitis. No trials compare bromelain against intranasal corticosteroids — the proven chronic therapy.

Patients with polyp-driven or anatomically obstructed disease needing surgery or biologics — enzyme therapy will not open a blocked sinus. Those on blood thinners (interaction), and anyone using it as a stand-alone chronic treatment when the steroid-plus-saline core remains untried.