Assalix® for chronic low back pain and arthralgia: Interim analysis of a post‐marketing surveillance study

Pro and Contra Duration Restriction of Treatment with Willow Bark Extract

“…(Glinko, ). Severe adverse events were also not observed in patients treated with willow bark extract, neither in 5 clinical studies over up to 6 weeks (Vlachojannis et al ., ), nor in 3 surveys over 8 weeks including a total of 5871 patients (Werner and Scheithe, , Zenner‐Weber, , Müller‐Faßbender et al ., ) nor in a recently published survey over 6 months including 436 patients (Uehleke et al ., ). The overall adverse event rate during treatment with willow bark extract for chronic back pain, fibromyalgia and/or osteoarthritis was below 3%.…”