Andreas Schapowal

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OBJECTIVES To compare the efficacy and tolerability of butterbur (Petasites hybridus) with cetirizine in patients with seasonal allergic rhinitis (hay fever). DESIGN Randomised, double blind, parallel group comparison. SETTING Four outpatient general medicine and allergy clinics in Switzerland and Germany. PARTICIPANTS 131 patients were screened for(More)
BACKGROUND The aim of this trial was to assess the relative efficacy of a sage/echinacea spray and a chlorhexidine/lidocaine spray in the treatment of acute sore throats. METHODS This was a multicenter, randomized, double-blind, double-dummy controlled trial carried out in eleven general practices in Switzerland. A total of 154 patients (133 analyzed in(More)
INTRODUCTION Respiratory tract infections are common, and these infections occur frequently in children, susceptible adults, and older persons. The risk for recurrences and complications relates not only to the presence of viruses but also to immune function. Therefore, modulation of the immune system and antiviral interventions such as echinacea might(More)
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