Opioids: Drug Effects, Side Effects, Dosage and Uses
Background Opioids have been used as painkillers for thousands of years. Initially in the form of opium, the dried milky sap of the opium poppy L. (Papaveraceae). In the early 19th century, the pure opium alkaloid morphine was isolated for the first time and later administered with the newly invented hypodermic needle. In the 20th … Opioids: Drug Effects, Side Effects, Dosage and Uses