Tramadol is a prescription medication used to treat moderate to moderately severe pain. It belongs to a class of drugs called opioid analgesics and also has some properties that affect the reuptake of certain neurotransmitters, such as serotonin and norepinephrine. Tramadol is primarily prescribed to relieve pain, such as that caused by injuries, surgeries, or chronic conditions. It may be used when other non-opioid pain medications are not sufficient.