This isn't specifically related to veterans, but with regard to the complications associated with medications, there are two things that Health Canada is certainly trying to do. One is working with pharmacists and providers on optimal prescribing. So there is work to try to ensure that only those who need medication get medication, and those who get medication get the right medication.
Secondly, jurisdictions across the country--with the support of Infoway--are introducing electronic systems to track and contain pharmaceutical information. Through that mechanism--by having all of one person's medications on one record accessible to any pharmacist or physician they go to--that certainly helps avoid unexpected complications. It can flag where there are interactions between drugs that will potentially cause confusion or instability. It certainly is recognized as a problem, and there are tools that can help partly address it.