What damage is there to injecting morphine sulfate tablets?

Death. It was not made to be injected and has impurities that should not be in your blood stream. Too much morphine in your blood stream will lead you to stop breathing and death. Iv morphine is made for injection. Drug abuse is a treatable problem, if that is the issue please ask for help.
Do not do this . Pills are not ment to be injected. Death is a possible consequence.