Death
What happens when you smoke Heroin, is you become really tired, and sleepy. IF you are really jacked up on it you begin hallusinating. You are unable to know what is going on, you are unable to see...
dunno check your self?
gives u energy, makes u feel like u can function.
It is a variation of decay towards the retina, causing severe (cheese) blindness, this can also happen while using other recreational drugs!
According to the users height and weight heroin can last up to eight hours,typically it'll last two - four hours.