Bromelain for Sinus and Airway Comfort: What the Pineapple Enzyme Actually Does

Bromelain is approved in Germany for sinus swelling and appears in many respiratory formulas. Here is how a protein-digesting enzyme affects mucus and inflammation, the human trials, the GDU standardisation and the allergy and blood-thinner cautions.

An Enzyme From Pineapple Stem

Bromelain is a mixture of protein-digesting enzymes extracted from pineapple stem and fruit. Taken orally, a portion is absorbed intact and circulates, where it reduces swelling, breaks down the protein strands that make mucus thick and modulates inflammatory signalling. Germany's Commission E approved it for post-surgical and sinus swelling in the 1990s.

The Trials

Randomised trials in acute sinusitis found bromelain alongside standard care shortened symptom duration and reduced congestion compared with standard care alone. A paediatric sinusitis study reported faster recovery. Small trials in chronic sinus inflammation and in exercise-related airway symptoms show modest benefit. Evidence for everyday respiratory comfort in healthy adults is thinner but consistent in direction. Doses in trials range from 500 to 2,000 mg a day of standardised enzyme.

GDU and Standardisation

Bromelain potency is measured in gelatin digesting units per gram, GDU/g, not just milligrams. A 2,400 GDU/g standardisation is a high-activity grade; the same weight of unstandardised bromelain could be far weaker. Reading the GDU figure matters more than the milligram figure, and a label that prints it is giving you the number that counts.

Cautions

Bromelain can cause reactions in people allergic to pineapple, latex, wheat or celery. It mildly thins the blood and may add to anticoagulants and antiplatelets; stop before surgery. It can increase absorption of some antibiotics. Digestive upset occurs at high doses. For most adults at supplement levels it is well tolerated.

Where VapoLung Fits

Bromelain standardised to 2,400 GDU/g is one of VapoLung's five botanicals, included for normal mucus balance. Our review page prints the GDU grade, notes that its share of the 154 mg blend is not published and carries the pineapple-allergy and blood-thinner cautions. Read the full breakdown on the VapoLung official website, including ingredients, customer reviews and current pricing.

Key Takeaways

• Bromelain breaks down thick mucus proteins and reduces swelling.
• Approved in Germany for sinus swelling; trials show faster sinusitis recovery.
• Potency is GDU/g, not milligrams; 2,400 GDU/g is high-activity.
• Allergy, blood-thinner and pre-surgery cautions apply.

Frequently Asked Questions

Can I just eat pineapple?

Fruit contains little bromelain; the stem extract is far more concentrated.

Does bromelain thin mucus like a decongestant?

It works differently, breaking down mucus proteins over time rather than shrinking vessels; it is not an on-demand decongestant.

How much bromelain is in VapoLung?

Its share of the 154 mg blend is not published; the label gives the 2,400 GDU/g grade, which our review quotes.

Sources

• PubMed: Bromelain sinusitis randomized
• NCCIH: Bromelain