Tramadol 100 mg is a prescription pain relief medication used to manage moderate to moderately severe pain in adults. It belongs to a class of drugs known as opioid analgesics, which act on the central nervous system to alter how the body senses and responds to pain. Tramadol provides effective relief for chronic pain conditions such as arthritis, back pain, post-surgical discomfort, and nerve-related pain when other non-opioid painkillers are insufficient.