Evidence Level
Moderate
Pelargonium sidoides has an unusually strong evidence base for a herbal remedy. The Cochrane review by Timmer et al. (2013) analyzed 10 RCTs and concluded that EPs 7630 is effective and well-tolerated for acute bronchitis. Matthys et al. (2003) conducted a pivotal double-blind, placebo-controlled RCT showing significant reductions in bronchitis symptom severity scores after 7 days of treatment. The extract is approved as a licensed phytomedicine in Germany — a regulatory status that requires demonstration of efficacy and safety through clinical trials. The multi-target mechanism (antiviral, antibacterial, immunomodulatory, mucociliary) provides a pharmacological rationale for its clinical effectiveness.