Fig. 15From: Solid form changes during drug development: good, bad, and ugly case studiesComparison of blood levels of oxybutynin and its metabolite, N-desethyloxybutynin, showing that the patch resulted in significantly lower levels of the metabolite, which reduced the dry mouth side effect, compared to the oral immediate release formulation (Oxytrol Package Insert. (available at http://pi.watson.com/data_stream.asp?product_group=1295&p=pi&language=E. Accessed 2 March 2015)Back to article page