In addition, GC/MS analysis performed to analyse PTSO clearly
revealed the presence of this active agent in all of the different films
developed. The content of PTSO was correlated with the amount of
Proallium® incorporated. These contents were approximately 0.3%,1.8% and 2.0% w/w for formulations with a nominal amount of
Proallium® of 2%, 5% and 6.5% w/w, respectively.