“…The soporific properties of Opium poppy and its constituents was mentioned by the philosophers Aristotle (384−322 BC) and Pliny the Elder (23–79 AD) [ 14 ], the Roman encyclopaedist Celsus (25 BC –50 AD) and the physicians: Hippocrates (460–377 BC), Heraclides of Tarentum (3rd century BC) [ 17 ] and Dioscorides (10-90 AD) [ 14 ]. Its indication as a treatment for children insomnia was referred to the Egyptian papyrus Ebers (16th century BCE) [ 2 ] and mentioned by the physicians Galen (129–200 AD) [ 14 ], Rhazes (10th century AD) and Avicenna (11th century AD) [ 2 ]. Opium preparations were administered orally (Diosc.4.64.2), applied on the skin or onto the eye (Celsus 6.6.1.H), as a suppository (Diosc.…”