If children consume heroine, the short term effects could be: * Loss of appetite * Increased heart rate, blood pressure, body temperature * Dilation of pupils * Disturbed sleep patterns * Nausea * Bizarre, erratic, sometimes violent behavior * Hallucinations, hyperexcitability, irritability * Panic and psychosis * Convulsions, seizures and death from high doses The long term effects could be: * Permanent damage to blood vessels of heart and brain, high blood pressure leading to heart attacks, strokes and death * Liver, kidney and lung damage * Destruction of tissues in nose if sniffed * Respiratory (breathing) problems if smoked * Infectious diseases and abscesses if injected * Malnutrition, weight loss * Disorientation, apathy, confused exhaustion * Strong psychological dependence * Psychosis * Depression * Damage to the brain including strokes and possibly epilepsy Hope that helps.