Evidence supporting the use of: Purple butterbur root
For the body system: Bronchials
Synopsis
Source of validity: Scientific
Rating (out of 5): 3
Purple butterbur root (Petasites hybridus) has a history of traditional use for respiratory issues, but its use to support the bronchial system is also backed by some scientific evidence. Several clinical studies have investigated butterbur extracts standardized for petasins for their effectiveness in treating respiratory conditions, particularly allergic rhinitis and asthma. Research indicates that butterbur may act as a leukotriene inhibitor, thus potentially reducing inflammation and constriction in the airways.
A randomized, double-blind trial published in Clinical and Experimental Allergy (2004) found that butterbur extract was as effective as cetirizine (an antihistamine) in controlling symptoms of seasonal allergic rhinitis without sedative effects. Another study in Phytotherapy Research (2001) suggested that butterbur extract could reduce the frequency and severity of asthma attacks when compared to placebo, likely due to its anti-inflammatory properties.
While these findings are promising, most research has focused on allergic conditions rather than directly on chronic bronchial diseases like bronchitis. Moreover, concerns remain about pyrrolizidine alkaloids (PAs) found in some butterbur preparations, which can be toxic to the liver unless properly removed. Thus, only PA-free extracts should be used.
In summary, there is moderate scientific support for the use of purple butterbur root in supporting bronchial health, particularly in allergic airway conditions. However, more targeted research is needed for bronchial diseases specifically, and safety considerations are important.
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