3 ampoules 60mg Is the ideal Man. AND hss long legs. Around8-12 hrs ves high eveer even better than oxy.That's what I'm really jealous of, I would just IM that shit all day. I am terrible at IV, not to mention how scary it is to roll the dice on heroin now. I used to get incredibly clean and pure dope, but I still wouldn't IV that for fear of it being too strong. One ampule would be a perfect dose for me IM (or IV if I could manage it my veins are just not made for shooting).