opioid dependence, constipation(which can cause severe complications), QT changes(cardiac condition), slow respirations, leading to lack of proper oxygen
in the
blood , there is a long list
of things, but if used properly, they are less likely to cause complications. Oxycodone is known to be physically more addicting than morphine, although for people who are allergic to morphine, Oxycontin can work well. I used to switch between the two.