Absorbed in skin or drunk. Burning sensation in mouth. Vomiting and diarrhoea. Mental confusion and dizziness. Convulsions then death vy paralysis of respiratory system.
Death is within minutes - only cyanide is quicker.
Opium and Morphine Raw opium very seldom used as a poison as acts slowly and has a strong smell. Morphine is a white crystalline substance extracted from opium. Used as analgesic, but overdose can be fatal. Fatal dose varies but usually about 5 grams. Symptoms start within minutes.