Tramadol Hydrochloride is medication which is used for treatment of mild to severe opioid pain. It belongs to opiate analgesic class of medicine that has chemical formula C16H26ClNO2 with molar mass of 299.839 g/mol. This compound serves as a serotonin-norepinephrine reuptake inhibitor and also works by binding to opioid receptor. It shows about 70 to 75% of bioavailability with protein binding ability of 20% and gets excreted in urine. Upon ingestion, tramadol takes 6 hours to exert its curative effects at targeted site. Tramadol Hydrochloride is metabolized in liver with help of CYP2D6 and CYP3A4.