short and long term effects of heroin
Short-Term Effects of Heroin. Often injected, the immediate effects of heroin are to modulate pain perception. As a street drug, dosing is impossible to fully control, and the side effects of decreased heart rate and breathing pose immense risk to users.
Dependency, or addiction, is the most common of long-term heroin effects. Heroin is often considered the most addictive of all legal and illegal substances that are commonly abused for their mind-altering effects.