Since no one actually answered and just fed you the same one liners, I figured I'd log in just to give an actual answer. If you like the other's answers and you can listen to people use the same cliche shit over and over. Just tell them that Bill Wilson was a greedy, insider trader, drunk who stole almost all his ideas from the Oxford group and that addiction science has increased since the 30s. They usually spicesc thud to.
So, heroin. Here are some ways. Crush a 50mg Naltrexone and add it to a 2 leader. Mix vigorously. Now everyou hour or take a half to full bottle cap of the mixture. There's no taste, don't worry. This will keep tolerance at bay or even lower it for some people. I had a genetic test, Naltrexone isn't pover full so I take 3 or 4 bottle caps. If you wake up in the middle of the night, another bottle cap and then a line. If you shoot, use a dropper and add you Naltrexone mix to you shot. 4 or 5 drops from a little $1 dropper from walgreens.
Ok, now the other stuff. About 30 minutes after dosing or right away if you shoot, eat 800mg of Tagamet, the heart burn medicine and 300mg of Zantac. This will help a little and make it last. Repeat every 45 to an hour.
The other thing you can do. Get a needless syringe. The pharmacy has therm but you don't need a script. Just say is to feed your baby kitten cuz he's the runt of something. Mix up your heroin with water really well. Suck it all up with the syringe. Get some vegetables or olive oil, whatever is cheap. Run the oil on the outside of the syringe. Lay ass up, face on the floor as if you were getting raped. Shower the syringe about an inch up your ass, squirt all the heroin water in your ass deep enough until it stays. Slowly pull it out. This should get you higher than snorting.
Google things like opiate potentiators and stuff and read. There's ever more tricks. Some even claim they can get to the point where they are no longer addicted. I stay addicted, but the WDs are nothing compared to what they use to be.
What else? Keep gooogling and researching. Never take even a chunk of Naltrexone. Always use the method is described. God luck. If you kill yourself, please don't let family know. I don't wanna live with that. You will end up in the psych ward, jail or dead. Please clear your history as I already have ptsd and don't need to hear about it.