The product pack is a primary factor for its preservation. That is why the packaging primary choice is preceded by stability studies, following the ICH guide-lines (The international Conference on Harmonization of Technical Requirements for Registration of Pharmaceuticals for Human Use).
Starting with the products ingredients peculiarities, it was projected a wrapper with specific materials, able to keep it stable. As Pharmacopoeia claims, “in its shelf life, its essential elements have not to change or change within tolerable limits”.