Published in Clinical Trials Week, September 5th, 2005
In recent years there have been a few reports of small research trials that give a mixed view about the effectiveness of Butterbur extract for treating intermittent allergic rhinitis (IAR). Now researchers from Germany and Switzerland have published results from a randomized, double-blind, parallel group comparison study involving 330 patients in 11 centers. They found that treatment with butterbur extract was as effective at combating symptoms of IAR as treatment with...
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