Origin and Medical Uses Painkiller. When opiate is injected, user feels surge of pleasure, then state of gratification into which hunger, pain, sexual urges do not intrude.
Body feels warm and heavy, mouth feels dry.
User goes into stupor. Dose required for this effect may cause restlessness, nausea, vomiting. Taken orally, effects felt more gradually. Physical effects include nausea, vomiting, insensitivity to pain, contraction of pupils, increased urination, constipation, sweating, itchy skin, slowed breathing. Heroin use particularly risky since purity and contents of dose can only be guessed.