"It's not an easy read," David Barber warns.
"There are heart-breaking stories in this book which are written by friends and relatives who have watched their loved ones die horrible deaths."
Mr Barber, from Waikanae, along with retired intensive care specialist Dr Jack Havill, has compiled Dying Badly — New Zealand Stories.
The real-life stories are from a small number of the thousands of submissions to parliament's inquiry into the issue of assisted dying for the terminally ill.
He said the 93 page book, published by the End-of-Life Choice Society of New Zealand, illustrated the need for a compassionate change in the criminal law to allow medical assistance to die for those who choose to end their suffering safely and peacefully in a loving environment without risking a jail term for relatives and friends with them at the time.