Evidence supporting the use of: Pelargonium (unspecified)
For the health condition: Cough (dry)

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Pelargonium, particularly extracts from Pelargonium sidoides (often labeled as "umckaloabo"), has been studied for its effects on respiratory infections, including dry coughs. Several randomized controlled trials and systematic reviews have investigated its efficacy in the treatment of acute bronchitis and other upper respiratory tract infections, where dry cough is a common symptom. Some studies suggest that Pelargonium extract may reduce the duration and severity of cough and improve recovery times compared to placebo. Proposed mechanisms include antimicrobial, antiviral, and immunomodulatory effects, although the exact pathways remain under investigation.

Guidelines in some countries (such as Germany) recognize Pelargonium extract as a herbal remedy for acute bronchitis, which often presents with a dry cough. However, most evidence pertains to standardized extracts (e.g., EPs 7630) rather than unspecified Pelargonium species or preparations. While results are generally positive, study quality varies and some reviews note potential publication bias or modest effect sizes. Safety profiles are generally favorable with mild gastrointestinal symptoms as the most common side effect. In summary, there is moderate scientific evidence supporting the use of standardized Pelargonium extracts for alleviating dry cough associated with acute respiratory infections, but evidence for unspecified Pelargonium is less robust.

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