Tramadol is used to relieve moderate to moderately severe pain. Tramadol extended-release tablets are only used by people who are expected to need medication to relieve pain around-the-clock for a long time. Tramadol is in a class of medications called opiate agonists. It works by changing the way the body senses pain and comes as a tablet and an extended-release (long-acting) tablet to take by mouth. The regular tablet is usually taken with or without food every 4-6 hours as needed.
Withdrawal symptoms include: nervousness; panic; sweating; difficulty falling asleep or staying asleep; runny nose, sneezing, or cough; numbness, pain, burning, or tingling in your hands or feet; hair standing on end; chills; nausea; uncontrollable shaking of a part of your body; diarrhea; or rarely, hallucinations.
Source: National Institutes of Health