Snorting Injecting Anally Oral Cocaine Picture Can last up to 4 hours. Can cause psychiatric complications. Snorting can lead to tearing of the nasal wall. Snorting Injecting Oral Anally MDMA Ecstasy Picture Can last up to 6 hours. Can cause convulsions, irrational behaviour, insomnia, depression.
Large doses can cause unconsciousness or hangover.
Oral Minor tranquillisers Valium, Rohypnol, Serepax Picture Lasts 12 - 24 hours. In some cases excitability. Use only under medical supervision. Depression, lack of muscle and speech coordination. Oral Injecting Anally Opoids Heroin, Morphine, Codeine, Pethidine, Methadone, Opium Picture Lasts 4 - 24 hours.