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Capsaicin for allergic rhinitis in adults.
1Guangdong College of Pharmacy, Clinical Department, Guangzhou, China, 510224. chengjing1137@126.com
The Cochrane Database of Systematic Reviews
|April 21, 2006
Summary
Limited research suggests intranasal capsaicin may not effectively treat allergic rhinitis. Further studies are needed to determine if capsaicin has a therapeutic role in managing this common condition.
Area of Science:
- Otorhinolaryngology
- Clinical Immunology
- Pharmacology
Background:
- Allergic rhinitis is a global health issue characterized by non-specific nasal hyperresponsiveness.
- Sensory nerves in the upper airway mucosa, particularly C fibers, are implicated in this phenomenon.
- Intranasal capsaicin stimulates these afferent nerves, potentially triggering reflexes and neuropeptide release.
Purpose of the Study:
- To evaluate the effectiveness of capsaicin for treating allergic rhinitis in adult patients.
Main Methods:
- A systematic review of randomized controlled trials was conducted.
- Searches included major databases like Cochrane, MEDLINE, and EMBASE up to January 2006.
- Study selection and quality assessment were performed by multiple independent reviewers.
Main Results:
- One small trial found no significant therapeutic effect of intranasal capsaicin for allergic rhinitis.
- A minor pharmacological effect on histamine response was observed.
- No increase in leukotriene levels was detected in nasal lavage post-treatment.
Conclusions:
- Current evidence is insufficient to support the clinical use of capsaicin for allergic rhinitis.
- More research is required to establish capsaicin's efficacy and safety in managing allergic rhinitis.