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 herbal formula BNO-101 (containing Gentianae radix, Primulae flos, Rumicis herba, Sambuci flos and Verbenae herba; ratio 1:3:3:3:3) has been widely employed as a 'mucoactive' agent in Germany for 70 years for the symptoms of respiratory infections. This paper reviews the clinical evidence of BNO-101 in sinusitis. METHODS The systematic(More)
BACKGROUND Intermittent allergic rhinitis (IAR) causes patients distress and impairs their work performance and quality of life. A variety of medicines are used by sufferers whose anguish frequently leads to trying new treatments, increasingly from herbal sources. METHODS Prospective, randomized, double-blind, parallel group comparison study of Butterbur(More)
OBJECTIVE To evaluate the efficacy and safety of the herbal drug preparation from the roots of Pelargonium sidoides (EPs 7630) compared to placebo. DESIGN Double-blind, randomized, placebo-controlled, parallel-group, multicenter trial with a group-sequential adaptive design. SUBJECTS Patients with sinonasal symptoms of at least 7 days duration, and(More)
It has been suggested that Fas ligand-Fas receptor interactions are involved in the regulation of eosinophil apoptosis and that dysfunctions in this system could contribute to the accumulation of these cells in allergic and asthmatic diseases. Here, we demonstrate that nitric oxide (NO) specifically prevents Fas receptor-mediated apoptosis in freshly(More)
Previous studies have suggested that histamine and leukotrienes (LTs) play an important pathobiological role in IgE-mediated allergic diseases. In vitro studies suggested that an extract of Petasites hybridus (Ze339) blocks LT synthesis in monocytes and granulocytes. Petasins are considered to be the pharmacologically active fraction within Ze339. Patients(More)
OBJECTIVES To investigate whether the efficacy and safety of Butterbur extract Ze339 are related to dosage when administered to patients with intermittent allergic rhinitis. DESIGN Prospective, randomized, double-blind, placebo-controlled, parallel-group comparison. SETTING Multicenter, including 6 outpatient general medicine and allergy clinics. (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)
BACKGROUND The herbal Isatis tinctoria extract (ITE) inhibits the inducible isoform of cyclooxygenase (COX-2) as well as lipoxygenase (5-LOX) and therefore possesses anti-inflammatory properties. The extract might also be useful in allergic airway diseases which are characterized by chronic inflammation. METHODS ITE obtained from leaves by supercritical(More)