Canada has at long last passed a doctor-assisted suicide law for the advanced terminally ill (06.10.16). New law does not include persons with degenerative illnesses, old age, handicap or mental health problems.
It is similar to the laws already on the West Coast of US — after various guidelines and waiting periods, a doctor can prescribe lethal medications, to be filled at a pharmacy, and taken if and when the dying person decides they want to go. Nembutal or Seconal are usually used.
Not perfect, but a step in the right direction.