Tramadol hydrochloride (50 mg) capsules made by Bristol Laboratories and provided by a pharmacy in England Tramadol can have pharmacodynamic, pharmacokinetic, and pharmacogenetic interactions. Learn about Tramadol hydrochloride uses, dosage, side effects, food interactions, and more. Get all the details about Tramadol hydrochloride from MedicinesFAQ. Find patient medical information for Tramadol (Ultram, Conzip, Qdolo) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Tramadol is an opioid painkiller (analgesic) indicated for the management of moderate to moderately severe pain in adults. Side effects are similar to other opioid and include dizziness, nausea, drowsiness, and others. Apart from analgesia, tramadol hydrochloride tablets administration may produce a constellation of symptoms (including dizziness, somnolence, nausea, constipation, sweating and pruritus) similar to that of other opioids. In contrast to morphine, tramadol has not been shown to cause histamine release. Tramadol belongs to the group of medicines called opioid analgesics. It acts in the central nervous system (CNS) to relieve pain. When tramadol is used for a long time, it may become habit-forming, causing mental or physical dependence. Tramadol is an opioid agonist that may be used to treat moderate to moderately severe chronic pain in adults, when other pain treatments such as non-opioid pain medicines do not treat your pain well enough, or you cannot tolerate them.