ClausonKASantamarinaMLBuettnerCMCauffieldJS. Evaluation of presence of aspirin-related warnings with willow bark. Ann Pharmacother2005; 39: 1234–7. Epub 31 May 2005. DOI 10.1345/aph.1E650
Food and Drug Administration, HHS. Labeling for oral and rectal over-the-counter drug products containing aspirin and nonaspirin salicylates; Reye's syndrome warning. Final rule. Fed Regist2003; 68: 18861–9.
4.
ChrubasikSEisenbergEBalanEWeinbergerTLuzzatiRConradtC. Treatment of low back pain exacerbations with willow bark extract: a randomized double-blind study. Am J Med2000; 109: 9–14.
5.
ChrubasikSKunzelOBlackAConradtCKerschbaumerF. Potential economic impact of using a proprietary willow bark extract in outpatient treatment of low back pain: an open non-randomized study. Phytomedicine2001; 8: 241–51.
