Hi My Friend: I too know what you are going thru with the chronic pain. Only here in Canada , demerol is a controlled drug and my doctor will only give me 20 ml in a multiple-dose vial every thirty days of demerol for the pain. I have tried every site online and I can't find anywhere that 1st ,that i can afford and secondly that will ship it to Canada. You see I too have fibromyalgia plus many other medical problems.