subject: Facts on Heroin Addiction and Heroin Smoking [print this page] It is seen that most of the people who start smoking heroin, frequently end up taking the drug by injecting it through syringe. As the individual develops tolerance, it take and more of the drug to achieve the desired effect. Smokers of heroin can also hide the use of the drug. It can be incredibly difficult but one must always try to bring the change in also the most difficult cases, by bringing help in all possible way. It might be hard but not impossible.