Pancuronium bromide
In Belgium, Luxembourg, and the Netherlands, euthanasia is legal.  Doctors are allowed to give medicines to terminally ill people who want to end their lives.  In these three countries, pancuronium bromide is one of the medicines that doctors often use for euthanasia.  First they give a sedative so the person goes into a deep sleep.  Then they give pancuronium bromide, which stops the person's breathing.